diff --git a/api/OpenAI.net8.0.cs b/api/OpenAI.net8.0.cs
index d9e42a0b3..8a3e434fe 100644
--- a/api/OpenAI.net8.0.cs
+++ b/api/OpenAI.net8.0.cs
@@ -42,7 +42,6 @@ public class OpenAIClientOptions : ClientPipelineOptions {
         public string ProjectId { get; set; }
         public string UserAgentApplicationId { get; set; }
     }
-    [Experimental("OPENAI001")]
     public class OpenAIContext : ModelReaderWriterContext {
         public static OpenAIContext Default { get; }
         protected override bool TryGetTypeBuilderCore(Type type, out ModelReaderWriterTypeBuilder builder);
@@ -315,6 +314,7 @@ public class CodeInterpreterToolResources : IJsonModel<CodeInterpreterToolResour
         public override readonly int GetHashCode();
         public static bool operator ==(FileSearchRanker left, FileSearchRanker right);
         public static implicit operator FileSearchRanker(string value);
+        public static implicit operator FileSearchRanker?(string value);
         public static bool operator !=(FileSearchRanker left, FileSearchRanker right);
         public override readonly string ToString();
     }
@@ -461,6 +461,7 @@ public class MessageFailureDetails : IJsonModel<MessageFailureDetails>, IPersist
         public override readonly int GetHashCode();
         public static bool operator ==(MessageFailureReason left, MessageFailureReason right);
         public static implicit operator MessageFailureReason(string value);
+        public static implicit operator MessageFailureReason?(string value);
         public static bool operator !=(MessageFailureReason left, MessageFailureReason right);
         public override readonly string ToString();
     }
@@ -496,6 +497,7 @@ public enum MessageRole {
         public override readonly int GetHashCode();
         public static bool operator ==(MessageStatus left, MessageStatus right);
         public static implicit operator MessageStatus(string value);
+        public static implicit operator MessageStatus?(string value);
         public static bool operator !=(MessageStatus left, MessageStatus right);
         public override readonly string ToString();
     }
@@ -580,6 +582,7 @@ public class RunError : IJsonModel<RunError>, IPersistableModel<RunError> {
         public override readonly int GetHashCode();
         public static bool operator ==(RunErrorCode left, RunErrorCode right);
         public static implicit operator RunErrorCode(string value);
+        public static implicit operator RunErrorCode?(string value);
         public static bool operator !=(RunErrorCode left, RunErrorCode right);
         public override readonly string ToString();
     }
@@ -603,6 +606,7 @@ public class RunIncompleteDetails : IJsonModel<RunIncompleteDetails>, IPersistab
         public override readonly int GetHashCode();
         public static bool operator ==(RunIncompleteReason left, RunIncompleteReason right);
         public static implicit operator RunIncompleteReason(string value);
+        public static implicit operator RunIncompleteReason?(string value);
         public static bool operator !=(RunIncompleteReason left, RunIncompleteReason right);
         public override readonly string ToString();
     }
@@ -634,6 +638,7 @@ public class RunModificationOptions : IJsonModel<RunModificationOptions>, IPersi
         public override readonly int GetHashCode();
         public static bool operator ==(RunStatus left, RunStatus right);
         public static implicit operator RunStatus(string value);
+        public static implicit operator RunStatus?(string value);
         public static bool operator !=(RunStatus left, RunStatus right);
         public override readonly string ToString();
     }
@@ -734,6 +739,7 @@ public class RunStepError : IJsonModel<RunStepError>, IPersistableModel<RunStepE
         public override readonly int GetHashCode();
         public static bool operator ==(RunStepErrorCode left, RunStepErrorCode right);
         public static implicit operator RunStepErrorCode(string value);
+        public static implicit operator RunStepErrorCode?(string value);
         public static bool operator !=(RunStepErrorCode left, RunStepErrorCode right);
         public override readonly string ToString();
     }
@@ -781,6 +787,7 @@ public enum RunStepKind {
         public override readonly int GetHashCode();
         public static bool operator ==(RunStepStatus left, RunStepStatus right);
         public static implicit operator RunStepStatus(string value);
+        public static implicit operator RunStepStatus?(string value);
         public static bool operator !=(RunStepStatus left, RunStepStatus right);
         public override readonly string ToString();
     }
@@ -1142,6 +1149,7 @@ public class AudioTranscription : IJsonModel<AudioTranscription>, IPersistableMo
         public override readonly int GetHashCode();
         public static bool operator ==(AudioTranscriptionFormat left, AudioTranscriptionFormat right);
         public static implicit operator AudioTranscriptionFormat(string value);
+        public static implicit operator AudioTranscriptionFormat?(string value);
         public static bool operator !=(AudioTranscriptionFormat left, AudioTranscriptionFormat right);
         public override readonly string ToString();
     }
@@ -1197,6 +1205,7 @@ public class AudioTranslation : IJsonModel<AudioTranslation>, IPersistableModel<
         public override readonly int GetHashCode();
         public static bool operator ==(AudioTranslationFormat left, AudioTranslationFormat right);
         public static implicit operator AudioTranslationFormat(string value);
+        public static implicit operator AudioTranslationFormat?(string value);
         public static bool operator !=(AudioTranslationFormat left, AudioTranslationFormat right);
         public override readonly string ToString();
     }
@@ -1228,6 +1237,7 @@ public class AudioTranslationOptions : IJsonModel<AudioTranslationOptions>, IPer
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedSpeechFormat left, GeneratedSpeechFormat right);
         public static implicit operator GeneratedSpeechFormat(string value);
+        public static implicit operator GeneratedSpeechFormat?(string value);
         public static bool operator !=(GeneratedSpeechFormat left, GeneratedSpeechFormat right);
         public override readonly string ToString();
     }
@@ -1256,6 +1266,7 @@ public class AudioTranslationOptions : IJsonModel<AudioTranslationOptions>, IPer
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedSpeechVoice left, GeneratedSpeechVoice right);
         public static implicit operator GeneratedSpeechVoice(string value);
+        public static implicit operator GeneratedSpeechVoice?(string value);
         public static bool operator !=(GeneratedSpeechVoice left, GeneratedSpeechVoice right);
         public override readonly string ToString();
     }
@@ -1319,6 +1330,7 @@ public class StreamingAudioTranscriptionUpdate : IJsonModel<StreamingAudioTransc
         public override readonly int GetHashCode();
         public static bool operator ==(StreamingAudioTranscriptionUpdateKind left, StreamingAudioTranscriptionUpdateKind right);
         public static implicit operator StreamingAudioTranscriptionUpdateKind(string value);
+        public static implicit operator StreamingAudioTranscriptionUpdateKind?(string value);
         public static bool operator !=(StreamingAudioTranscriptionUpdateKind left, StreamingAudioTranscriptionUpdateKind right);
         public override readonly string ToString();
     }
@@ -1527,6 +1539,7 @@ public class ChatCompletionCollectionOptions : IJsonModel<ChatCompletionCollecti
         public override readonly int GetHashCode();
         public static bool operator ==(ChatCompletionCollectionOrder left, ChatCompletionCollectionOrder right);
         public static implicit operator ChatCompletionCollectionOrder(string value);
+        public static implicit operator ChatCompletionCollectionOrder?(string value);
         public static bool operator !=(ChatCompletionCollectionOrder left, ChatCompletionCollectionOrder right);
         public override readonly string ToString();
     }
@@ -1561,6 +1574,7 @@ public class ChatCompletionMessageCollectionOptions : IJsonModel<ChatCompletionM
         public override readonly int GetHashCode();
         public static bool operator ==(ChatCompletionMessageCollectionOrder left, ChatCompletionMessageCollectionOrder right);
         public static implicit operator ChatCompletionMessageCollectionOrder(string value);
+        public static implicit operator ChatCompletionMessageCollectionOrder?(string value);
         public static bool operator !=(ChatCompletionMessageCollectionOrder left, ChatCompletionMessageCollectionOrder right);
         public override readonly string ToString();
     }
@@ -1681,6 +1695,7 @@ public class ChatFunctionChoice : IJsonModel<ChatFunctionChoice>, IPersistableMo
         public override readonly int GetHashCode();
         public static bool operator ==(ChatImageDetailLevel left, ChatImageDetailLevel right);
         public static implicit operator ChatImageDetailLevel(string value);
+        public static implicit operator ChatImageDetailLevel?(string value);
         public static bool operator !=(ChatImageDetailLevel left, ChatImageDetailLevel right);
         public override readonly string ToString();
     }
@@ -1696,6 +1711,7 @@ public class ChatFunctionChoice : IJsonModel<ChatFunctionChoice>, IPersistableMo
         public override readonly int GetHashCode();
         public static bool operator ==(ChatInputAudioFormat left, ChatInputAudioFormat right);
         public static implicit operator ChatInputAudioFormat(string value);
+        public static implicit operator ChatInputAudioFormat?(string value);
         public static bool operator !=(ChatInputAudioFormat left, ChatInputAudioFormat right);
         public override readonly string ToString();
     }
@@ -1847,6 +1863,7 @@ public class ChatOutputAudio : IJsonModel<ChatOutputAudio>, IPersistableModel<Ch
         public override readonly int GetHashCode();
         public static bool operator ==(ChatOutputAudioFormat left, ChatOutputAudioFormat right);
         public static implicit operator ChatOutputAudioFormat(string value);
+        public static implicit operator ChatOutputAudioFormat?(string value);
         public static bool operator !=(ChatOutputAudioFormat left, ChatOutputAudioFormat right);
         public override readonly string ToString();
     }
@@ -1880,6 +1897,7 @@ public class ChatOutputAudioReference : IJsonModel<ChatOutputAudioReference>, IP
         public override readonly int GetHashCode();
         public static bool operator ==(ChatOutputAudioVoice left, ChatOutputAudioVoice right);
         public static implicit operator ChatOutputAudioVoice(string value);
+        public static implicit operator ChatOutputAudioVoice?(string value);
         public static bool operator !=(ChatOutputAudioVoice left, ChatOutputAudioVoice right);
         public override readonly string ToString();
     }
@@ -1921,6 +1939,7 @@ public class ChatOutputTokenUsageDetails : IJsonModel<ChatOutputTokenUsageDetail
         public override readonly int GetHashCode();
         public static bool operator ==(ChatReasoningEffortLevel left, ChatReasoningEffortLevel right);
         public static implicit operator ChatReasoningEffortLevel(string value);
+        public static implicit operator ChatReasoningEffortLevel?(string value);
         public static bool operator !=(ChatReasoningEffortLevel left, ChatReasoningEffortLevel right);
         public override readonly string ToString();
     }
@@ -2507,6 +2526,7 @@ public enum FileStatus {
         public override readonly int GetHashCode();
         public static bool operator ==(FileUploadPurpose left, FileUploadPurpose right);
         public static implicit operator FileUploadPurpose(string value);
+        public static implicit operator FileUploadPurpose?(string value);
         public static bool operator !=(FileUploadPurpose left, FileUploadPurpose right);
         public override readonly string ToString();
     }
@@ -2766,6 +2786,7 @@ public class FineTuningJobCollectionOptions {
         public override readonly int GetHashCode();
         public static bool operator ==(FineTuningJobEventKind left, FineTuningJobEventKind right);
         public static implicit operator FineTuningJobEventKind(string value);
+        public static implicit operator FineTuningJobEventKind?(string value);
         public static bool operator !=(FineTuningJobEventKind left, FineTuningJobEventKind right);
         public override readonly string ToString();
     }
@@ -2800,6 +2821,7 @@ public class FineTuningOptions : IJsonModel<FineTuningOptions>, IPersistableMode
         public override readonly int GetHashCode();
         public static bool operator ==(FineTuningStatus left, FineTuningStatus right);
         public static implicit operator FineTuningStatus(string value);
+        public static implicit operator FineTuningStatus?(string value);
         public static bool operator !=(FineTuningStatus left, FineTuningStatus right);
         public override readonly string ToString();
     }
@@ -3044,6 +3066,7 @@ public class GraderStringCheck : Grader, IJsonModel<GraderStringCheck>, IPersist
         public override readonly int GetHashCode();
         public static bool operator ==(GraderStringCheckOperation left, GraderStringCheckOperation right);
         public static implicit operator GraderStringCheckOperation(string value);
+        public static implicit operator GraderStringCheckOperation?(string value);
         public static bool operator !=(GraderStringCheckOperation left, GraderStringCheckOperation right);
         public override readonly string ToString();
     }
@@ -3079,6 +3102,7 @@ public class GraderTextSimilarity : Grader, IJsonModel<GraderTextSimilarity>, IP
         public override readonly int GetHashCode();
         public static bool operator ==(GraderTextSimilarityEvaluationMetric left, GraderTextSimilarityEvaluationMetric right);
         public static implicit operator GraderTextSimilarityEvaluationMetric(string value);
+        public static implicit operator GraderTextSimilarityEvaluationMetric?(string value);
         public static bool operator !=(GraderTextSimilarityEvaluationMetric left, GraderTextSimilarityEvaluationMetric right);
         public override readonly string ToString();
     }
@@ -3098,6 +3122,7 @@ public class GraderTextSimilarity : Grader, IJsonModel<GraderTextSimilarity>, IP
         public override readonly int GetHashCode();
         public static bool operator ==(GraderType left, GraderType right);
         public static implicit operator GraderType(string value);
+        public static implicit operator GraderType?(string value);
         public static bool operator !=(GraderType left, GraderType right);
         public override readonly string ToString();
     }
@@ -3208,6 +3233,7 @@ public class GeneratedImage : IJsonModel<GeneratedImage>, IPersistableModel<Gene
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedImageBackground left, GeneratedImageBackground right);
         public static implicit operator GeneratedImageBackground(string value);
+        public static implicit operator GeneratedImageBackground?(string value);
         public static bool operator !=(GeneratedImageBackground left, GeneratedImageBackground right);
         public override readonly string ToString();
     }
@@ -3237,6 +3263,7 @@ public class GeneratedImageCollection : ObjectModel.ReadOnlyCollection<Generated
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedImageFileFormat left, GeneratedImageFileFormat right);
         public static implicit operator GeneratedImageFileFormat(string value);
+        public static implicit operator GeneratedImageFileFormat?(string value);
         public static bool operator !=(GeneratedImageFileFormat left, GeneratedImageFileFormat right);
         public override readonly string ToString();
     }
@@ -3251,6 +3278,7 @@ public class GeneratedImageCollection : ObjectModel.ReadOnlyCollection<Generated
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedImageFormat left, GeneratedImageFormat right);
         public static implicit operator GeneratedImageFormat(string value);
+        public static implicit operator GeneratedImageFormat?(string value);
         public static bool operator !=(GeneratedImageFormat left, GeneratedImageFormat right);
         public override readonly string ToString();
     }
@@ -3266,6 +3294,7 @@ public class GeneratedImageCollection : ObjectModel.ReadOnlyCollection<Generated
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedImageModerationLevel left, GeneratedImageModerationLevel right);
         public static implicit operator GeneratedImageModerationLevel(string value);
+        public static implicit operator GeneratedImageModerationLevel?(string value);
         public static bool operator !=(GeneratedImageModerationLevel left, GeneratedImageModerationLevel right);
         public override readonly string ToString();
     }
@@ -3286,6 +3315,7 @@ public class GeneratedImageCollection : ObjectModel.ReadOnlyCollection<Generated
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedImageQuality left, GeneratedImageQuality right);
         public static implicit operator GeneratedImageQuality(string value);
+        public static implicit operator GeneratedImageQuality?(string value);
         public static bool operator !=(GeneratedImageQuality left, GeneratedImageQuality right);
         public override readonly string ToString();
     }
@@ -3322,6 +3352,7 @@ public class GeneratedImageCollection : ObjectModel.ReadOnlyCollection<Generated
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedImageStyle left, GeneratedImageStyle right);
         public static implicit operator GeneratedImageStyle(string value);
+        public static implicit operator GeneratedImageStyle?(string value);
         public static bool operator !=(GeneratedImageStyle left, GeneratedImageStyle right);
         public override readonly string ToString();
     }
@@ -3615,6 +3646,7 @@ public class ConversationContentPart : IJsonModel<ConversationContentPart>, IPer
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationContentPartKind left, ConversationContentPartKind right);
         public static implicit operator ConversationContentPartKind(string value);
+        public static implicit operator ConversationContentPartKind?(string value);
         public static bool operator !=(ConversationContentPartKind left, ConversationContentPartKind right);
         public override readonly string ToString();
     }
@@ -3643,6 +3675,7 @@ public class ConversationFunctionTool : ConversationTool, IJsonModel<Conversatio
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationIncompleteReason left, ConversationIncompleteReason right);
         public static implicit operator ConversationIncompleteReason(string value);
+        public static implicit operator ConversationIncompleteReason?(string value);
         public static bool operator !=(ConversationIncompleteReason left, ConversationIncompleteReason right);
         public override readonly string ToString();
     }
@@ -3669,6 +3702,7 @@ public class ConversationInputTokenUsageDetails : IJsonModel<ConversationInputTo
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationItemStatus left, ConversationItemStatus right);
         public static implicit operator ConversationItemStatus(string value);
+        public static implicit operator ConversationItemStatus?(string value);
         public static bool operator !=(ConversationItemStatus left, ConversationItemStatus right);
         public override readonly string ToString();
     }
@@ -3694,6 +3728,7 @@ public class ConversationMaxTokensChoice : IJsonModel<ConversationMaxTokensChoic
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationMessageRole left, ConversationMessageRole right);
         public static implicit operator ConversationMessageRole(string value);
+        public static implicit operator ConversationMessageRole?(string value);
         public static bool operator !=(ConversationMessageRole left, ConversationMessageRole right);
         public override readonly string ToString();
     }
@@ -3808,6 +3843,7 @@ public class ConversationSessionStartedUpdate : RealtimeUpdate, IJsonModel<Conve
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationStatus left, ConversationStatus right);
         public static implicit operator ConversationStatus(string value);
+        public static implicit operator ConversationStatus?(string value);
         public static bool operator !=(ConversationStatus left, ConversationStatus right);
         public override readonly string ToString();
     }
@@ -3871,6 +3907,7 @@ public enum ConversationToolChoiceKind {
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationToolKind left, ConversationToolKind right);
         public static implicit operator ConversationToolKind(string value);
+        public static implicit operator ConversationToolKind?(string value);
         public static bool operator !=(ConversationToolKind left, ConversationToolKind right);
         public override readonly string ToString();
     }
@@ -3895,6 +3932,7 @@ public enum ConversationToolChoiceKind {
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationVoice left, ConversationVoice right);
         public static implicit operator ConversationVoice(string value);
+        public static implicit operator ConversationVoice?(string value);
         public static bool operator !=(ConversationVoice left, ConversationVoice right);
         public override readonly string ToString();
     }
@@ -3993,6 +4031,7 @@ public class InputNoiseReductionOptions : IJsonModel<InputNoiseReductionOptions>
         public override readonly int GetHashCode();
         public static bool operator ==(InputTranscriptionModel left, InputTranscriptionModel right);
         public static implicit operator InputTranscriptionModel(string value);
+        public static implicit operator InputTranscriptionModel?(string value);
         public static bool operator !=(InputTranscriptionModel left, InputTranscriptionModel right);
         public override readonly string ToString();
     }
@@ -4160,6 +4199,7 @@ public class RateLimitsUpdate : RealtimeUpdate, IJsonModel<RateLimitsUpdate>, IP
         public override readonly int GetHashCode();
         public static bool operator ==(RealtimeAudioFormat left, RealtimeAudioFormat right);
         public static implicit operator RealtimeAudioFormat(string value);
+        public static implicit operator RealtimeAudioFormat?(string value);
         public static bool operator !=(RealtimeAudioFormat left, RealtimeAudioFormat right);
         public override readonly string ToString();
     }
@@ -4326,6 +4366,7 @@ public enum RealtimeUpdateKind {
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseConversationSelection left, ResponseConversationSelection right);
         public static implicit operator ResponseConversationSelection(string value);
+        public static implicit operator ResponseConversationSelection?(string value);
         public static bool operator !=(ResponseConversationSelection left, ResponseConversationSelection right);
         public override readonly string ToString();
     }
@@ -4367,6 +4408,7 @@ public class ResponseStartedUpdate : RealtimeUpdate, IJsonModel<ResponseStartedU
         public override readonly int GetHashCode();
         public static bool operator ==(SemanticEagernessLevel left, SemanticEagernessLevel right);
         public static implicit operator SemanticEagernessLevel(string value);
+        public static implicit operator SemanticEagernessLevel?(string value);
         public static bool operator !=(SemanticEagernessLevel left, SemanticEagernessLevel right);
         public override readonly string ToString();
     }
@@ -4532,6 +4574,7 @@ public class ComputerOutput : IJsonModel<ComputerOutput>, IPersistableModel<Comp
         public override readonly int GetHashCode();
         public static bool operator ==(ComputerToolEnvironment left, ComputerToolEnvironment right);
         public static implicit operator ComputerToolEnvironment(string value);
+        public static implicit operator ComputerToolEnvironment?(string value);
         public static bool operator !=(ComputerToolEnvironment left, ComputerToolEnvironment right);
         public override readonly string ToString();
     }
@@ -4577,6 +4620,7 @@ public enum FileSearchCallStatus {
         public override readonly int GetHashCode();
         public static bool operator ==(FileSearchToolRanker left, FileSearchToolRanker right);
         public static implicit operator FileSearchToolRanker(string value);
+        public static implicit operator FileSearchToolRanker?(string value);
         public static bool operator !=(FileSearchToolRanker left, FileSearchToolRanker right);
         public override readonly string ToString();
     }
@@ -4869,6 +4913,7 @@ public class ResponseError : IJsonModel<ResponseError>, IPersistableModel<Respon
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseErrorCode left, ResponseErrorCode right);
         public static implicit operator ResponseErrorCode(string value);
+        public static implicit operator ResponseErrorCode?(string value);
         public static bool operator !=(ResponseErrorCode left, ResponseErrorCode right);
         public override readonly string ToString();
     }
@@ -4885,6 +4930,7 @@ public class ResponseError : IJsonModel<ResponseError>, IPersistableModel<Respon
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseImageDetailLevel left, ResponseImageDetailLevel right);
         public static implicit operator ResponseImageDetailLevel(string value);
+        public static implicit operator ResponseImageDetailLevel?(string value);
         public static bool operator !=(ResponseImageDetailLevel left, ResponseImageDetailLevel right);
         public override readonly string ToString();
     }
@@ -4908,6 +4954,7 @@ public class ResponseIncompleteStatusDetails : IJsonModel<ResponseIncompleteStat
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseIncompleteStatusReason left, ResponseIncompleteStatusReason right);
         public static implicit operator ResponseIncompleteStatusReason(string value);
+        public static implicit operator ResponseIncompleteStatusReason?(string value);
         public static bool operator !=(ResponseIncompleteStatusReason left, ResponseIncompleteStatusReason right);
         public override readonly string ToString();
     }
@@ -5016,6 +5063,7 @@ public class ResponseOutputTokenUsageDetails : IJsonModel<ResponseOutputTokenUsa
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseReasoningEffortLevel left, ResponseReasoningEffortLevel right);
         public static implicit operator ResponseReasoningEffortLevel(string value);
+        public static implicit operator ResponseReasoningEffortLevel?(string value);
         public static bool operator !=(ResponseReasoningEffortLevel left, ResponseReasoningEffortLevel right);
         public override readonly string ToString();
     }
@@ -5041,6 +5089,7 @@ public class ResponseReasoningOptions : IJsonModel<ResponseReasoningOptions>, IP
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseReasoningSummaryVerbosity left, ResponseReasoningSummaryVerbosity right);
         public static implicit operator ResponseReasoningSummaryVerbosity(string value);
+        public static implicit operator ResponseReasoningSummaryVerbosity?(string value);
         public static bool operator !=(ResponseReasoningSummaryVerbosity left, ResponseReasoningSummaryVerbosity right);
         public override readonly string ToString();
     }
@@ -5139,6 +5188,7 @@ public enum ResponseToolChoiceKind {
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseTruncationMode left, ResponseTruncationMode right);
         public static implicit operator ResponseTruncationMode(string value);
+        public static implicit operator ResponseTruncationMode?(string value);
         public static bool operator !=(ResponseTruncationMode left, ResponseTruncationMode right);
         public override readonly string ToString();
     }
@@ -5406,6 +5456,7 @@ public enum WebSearchCallStatus {
         public override readonly int GetHashCode();
         public static bool operator ==(WebSearchContextSize left, WebSearchContextSize right);
         public static implicit operator WebSearchContextSize(string value);
+        public static implicit operator WebSearchContextSize?(string value);
         public static bool operator !=(WebSearchContextSize left, WebSearchContextSize right);
         public override readonly string ToString();
     }
@@ -5542,6 +5593,7 @@ public class VectorStoreBatchFileJob : IJsonModel<VectorStoreBatchFileJob>, IPer
         public override readonly int GetHashCode();
         public static bool operator ==(VectorStoreBatchFileJobStatus left, VectorStoreBatchFileJobStatus right);
         public static implicit operator VectorStoreBatchFileJobStatus(string value);
+        public static implicit operator VectorStoreBatchFileJobStatus?(string value);
         public static bool operator !=(VectorStoreBatchFileJobStatus left, VectorStoreBatchFileJobStatus right);
         public override readonly string ToString();
     }
@@ -5638,6 +5690,7 @@ public class VectorStoreCollectionOptions {
         public override readonly int GetHashCode();
         public static bool operator ==(VectorStoreCollectionOrder left, VectorStoreCollectionOrder right);
         public static implicit operator VectorStoreCollectionOrder(string value);
+        public static implicit operator VectorStoreCollectionOrder?(string value);
         public static bool operator !=(VectorStoreCollectionOrder left, VectorStoreCollectionOrder right);
         public override readonly string ToString();
     }
@@ -5737,6 +5790,7 @@ public class VectorStoreFileAssociationError : IJsonModel<VectorStoreFileAssocia
         public override readonly int GetHashCode();
         public static bool operator ==(VectorStoreFileAssociationErrorCode left, VectorStoreFileAssociationErrorCode right);
         public static implicit operator VectorStoreFileAssociationErrorCode(string value);
+        public static implicit operator VectorStoreFileAssociationErrorCode?(string value);
         public static bool operator !=(VectorStoreFileAssociationErrorCode left, VectorStoreFileAssociationErrorCode right);
         public override readonly string ToString();
     }
@@ -5774,6 +5828,7 @@ public class VectorStoreFileCounts : IJsonModel<VectorStoreFileCounts>, IPersist
         public override readonly int GetHashCode();
         public static bool operator ==(VectorStoreFileStatusFilter left, VectorStoreFileStatusFilter right);
         public static implicit operator VectorStoreFileStatusFilter(string value);
+        public static implicit operator VectorStoreFileStatusFilter?(string value);
         public static bool operator !=(VectorStoreFileStatusFilter left, VectorStoreFileStatusFilter right);
         public override readonly string ToString();
     }
diff --git a/api/OpenAI.netstandard2.0.cs b/api/OpenAI.netstandard2.0.cs
index 2306f43be..4d5f6fe65 100644
--- a/api/OpenAI.netstandard2.0.cs
+++ b/api/OpenAI.netstandard2.0.cs
@@ -291,6 +291,7 @@ public class CodeInterpreterToolResources : IJsonModel<CodeInterpreterToolResour
         public override readonly int GetHashCode();
         public static bool operator ==(FileSearchRanker left, FileSearchRanker right);
         public static implicit operator FileSearchRanker(string value);
+        public static implicit operator FileSearchRanker?(string value);
         public static bool operator !=(FileSearchRanker left, FileSearchRanker right);
         public override readonly string ToString();
     }
@@ -424,6 +425,7 @@ public class MessageFailureDetails : IJsonModel<MessageFailureDetails>, IPersist
         public override readonly int GetHashCode();
         public static bool operator ==(MessageFailureReason left, MessageFailureReason right);
         public static implicit operator MessageFailureReason(string value);
+        public static implicit operator MessageFailureReason?(string value);
         public static bool operator !=(MessageFailureReason left, MessageFailureReason right);
         public override readonly string ToString();
     }
@@ -455,6 +457,7 @@ public enum MessageRole {
         public override readonly int GetHashCode();
         public static bool operator ==(MessageStatus left, MessageStatus right);
         public static implicit operator MessageStatus(string value);
+        public static implicit operator MessageStatus?(string value);
         public static bool operator !=(MessageStatus left, MessageStatus right);
         public override readonly string ToString();
     }
@@ -531,6 +534,7 @@ public class RunError : IJsonModel<RunError>, IPersistableModel<RunError> {
         public override readonly int GetHashCode();
         public static bool operator ==(RunErrorCode left, RunErrorCode right);
         public static implicit operator RunErrorCode(string value);
+        public static implicit operator RunErrorCode?(string value);
         public static bool operator !=(RunErrorCode left, RunErrorCode right);
         public override readonly string ToString();
     }
@@ -552,6 +556,7 @@ public class RunIncompleteDetails : IJsonModel<RunIncompleteDetails>, IPersistab
         public override readonly int GetHashCode();
         public static bool operator ==(RunIncompleteReason left, RunIncompleteReason right);
         public static implicit operator RunIncompleteReason(string value);
+        public static implicit operator RunIncompleteReason?(string value);
         public static bool operator !=(RunIncompleteReason left, RunIncompleteReason right);
         public override readonly string ToString();
     }
@@ -581,6 +586,7 @@ public class RunModificationOptions : IJsonModel<RunModificationOptions>, IPersi
         public override readonly int GetHashCode();
         public static bool operator ==(RunStatus left, RunStatus right);
         public static implicit operator RunStatus(string value);
+        public static implicit operator RunStatus?(string value);
         public static bool operator !=(RunStatus left, RunStatus right);
         public override readonly string ToString();
     }
@@ -673,6 +679,7 @@ public class RunStepError : IJsonModel<RunStepError>, IPersistableModel<RunStepE
         public override readonly int GetHashCode();
         public static bool operator ==(RunStepErrorCode left, RunStepErrorCode right);
         public static implicit operator RunStepErrorCode(string value);
+        public static implicit operator RunStepErrorCode?(string value);
         public static bool operator !=(RunStepErrorCode left, RunStepErrorCode right);
         public override readonly string ToString();
     }
@@ -715,6 +722,7 @@ public enum RunStepKind {
         public override readonly int GetHashCode();
         public static bool operator ==(RunStepStatus left, RunStepStatus right);
         public static implicit operator RunStepStatus(string value);
+        public static implicit operator RunStepStatus?(string value);
         public static bool operator !=(RunStepStatus left, RunStepStatus right);
         public override readonly string ToString();
     }
@@ -1038,6 +1046,7 @@ public class AudioTranscription : IJsonModel<AudioTranscription>, IPersistableMo
         public override readonly int GetHashCode();
         public static bool operator ==(AudioTranscriptionFormat left, AudioTranscriptionFormat right);
         public static implicit operator AudioTranscriptionFormat(string value);
+        public static implicit operator AudioTranscriptionFormat?(string value);
         public static bool operator !=(AudioTranscriptionFormat left, AudioTranscriptionFormat right);
         public override readonly string ToString();
     }
@@ -1083,6 +1092,7 @@ public class AudioTranslation : IJsonModel<AudioTranslation>, IPersistableModel<
         public override readonly int GetHashCode();
         public static bool operator ==(AudioTranslationFormat left, AudioTranslationFormat right);
         public static implicit operator AudioTranslationFormat(string value);
+        public static implicit operator AudioTranslationFormat?(string value);
         public static bool operator !=(AudioTranslationFormat left, AudioTranslationFormat right);
         public override readonly string ToString();
     }
@@ -1110,6 +1120,7 @@ public class AudioTranslationOptions : IJsonModel<AudioTranslationOptions>, IPer
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedSpeechFormat left, GeneratedSpeechFormat right);
         public static implicit operator GeneratedSpeechFormat(string value);
+        public static implicit operator GeneratedSpeechFormat?(string value);
         public static bool operator !=(GeneratedSpeechFormat left, GeneratedSpeechFormat right);
         public override readonly string ToString();
     }
@@ -1133,6 +1144,7 @@ public class AudioTranslationOptions : IJsonModel<AudioTranslationOptions>, IPer
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedSpeechVoice left, GeneratedSpeechVoice right);
         public static implicit operator GeneratedSpeechVoice(string value);
+        public static implicit operator GeneratedSpeechVoice?(string value);
         public static bool operator !=(GeneratedSpeechVoice left, GeneratedSpeechVoice right);
         public override readonly string ToString();
     }
@@ -1186,6 +1198,7 @@ public class StreamingAudioTranscriptionUpdate : IJsonModel<StreamingAudioTransc
         public override readonly int GetHashCode();
         public static bool operator ==(StreamingAudioTranscriptionUpdateKind left, StreamingAudioTranscriptionUpdateKind right);
         public static implicit operator StreamingAudioTranscriptionUpdateKind(string value);
+        public static implicit operator StreamingAudioTranscriptionUpdateKind?(string value);
         public static bool operator !=(StreamingAudioTranscriptionUpdateKind left, StreamingAudioTranscriptionUpdateKind right);
         public override readonly string ToString();
     }
@@ -1354,6 +1367,7 @@ public class ChatCompletionCollectionOptions : IJsonModel<ChatCompletionCollecti
         public override readonly int GetHashCode();
         public static bool operator ==(ChatCompletionCollectionOrder left, ChatCompletionCollectionOrder right);
         public static implicit operator ChatCompletionCollectionOrder(string value);
+        public static implicit operator ChatCompletionCollectionOrder?(string value);
         public static bool operator !=(ChatCompletionCollectionOrder left, ChatCompletionCollectionOrder right);
         public override readonly string ToString();
     }
@@ -1385,6 +1399,7 @@ public class ChatCompletionMessageCollectionOptions : IJsonModel<ChatCompletionM
         public override readonly int GetHashCode();
         public static bool operator ==(ChatCompletionMessageCollectionOrder left, ChatCompletionMessageCollectionOrder right);
         public static implicit operator ChatCompletionMessageCollectionOrder(string value);
+        public static implicit operator ChatCompletionMessageCollectionOrder?(string value);
         public static bool operator !=(ChatCompletionMessageCollectionOrder left, ChatCompletionMessageCollectionOrder right);
         public override readonly string ToString();
     }
@@ -1482,6 +1497,7 @@ public class ChatFunctionChoice : IJsonModel<ChatFunctionChoice>, IPersistableMo
         public override readonly int GetHashCode();
         public static bool operator ==(ChatImageDetailLevel left, ChatImageDetailLevel right);
         public static implicit operator ChatImageDetailLevel(string value);
+        public static implicit operator ChatImageDetailLevel?(string value);
         public static bool operator !=(ChatImageDetailLevel left, ChatImageDetailLevel right);
         public override readonly string ToString();
     }
@@ -1496,6 +1512,7 @@ public class ChatFunctionChoice : IJsonModel<ChatFunctionChoice>, IPersistableMo
         public override readonly int GetHashCode();
         public static bool operator ==(ChatInputAudioFormat left, ChatInputAudioFormat right);
         public static implicit operator ChatInputAudioFormat(string value);
+        public static implicit operator ChatInputAudioFormat?(string value);
         public static bool operator !=(ChatInputAudioFormat left, ChatInputAudioFormat right);
         public override readonly string ToString();
     }
@@ -1619,6 +1636,7 @@ public class ChatOutputAudio : IJsonModel<ChatOutputAudio>, IPersistableModel<Ch
         public override readonly int GetHashCode();
         public static bool operator ==(ChatOutputAudioFormat left, ChatOutputAudioFormat right);
         public static implicit operator ChatOutputAudioFormat(string value);
+        public static implicit operator ChatOutputAudioFormat?(string value);
         public static bool operator !=(ChatOutputAudioFormat left, ChatOutputAudioFormat right);
         public override readonly string ToString();
     }
@@ -1650,6 +1668,7 @@ public class ChatOutputAudioReference : IJsonModel<ChatOutputAudioReference>, IP
         public override readonly int GetHashCode();
         public static bool operator ==(ChatOutputAudioVoice left, ChatOutputAudioVoice right);
         public static implicit operator ChatOutputAudioVoice(string value);
+        public static implicit operator ChatOutputAudioVoice?(string value);
         public static bool operator !=(ChatOutputAudioVoice left, ChatOutputAudioVoice right);
         public override readonly string ToString();
     }
@@ -1683,6 +1702,7 @@ public class ChatOutputTokenUsageDetails : IJsonModel<ChatOutputTokenUsageDetail
         public override readonly int GetHashCode();
         public static bool operator ==(ChatReasoningEffortLevel left, ChatReasoningEffortLevel right);
         public static implicit operator ChatReasoningEffortLevel(string value);
+        public static implicit operator ChatReasoningEffortLevel?(string value);
         public static bool operator !=(ChatReasoningEffortLevel left, ChatReasoningEffortLevel right);
         public override readonly string ToString();
     }
@@ -2165,6 +2185,7 @@ public enum FileStatus {
         public override readonly int GetHashCode();
         public static bool operator ==(FileUploadPurpose left, FileUploadPurpose right);
         public static implicit operator FileUploadPurpose(string value);
+        public static implicit operator FileUploadPurpose?(string value);
         public static bool operator !=(FileUploadPurpose left, FileUploadPurpose right);
         public override readonly string ToString();
     }
@@ -2393,6 +2414,7 @@ public class FineTuningJobCollectionOptions {
         public override readonly int GetHashCode();
         public static bool operator ==(FineTuningJobEventKind left, FineTuningJobEventKind right);
         public static implicit operator FineTuningJobEventKind(string value);
+        public static implicit operator FineTuningJobEventKind?(string value);
         public static bool operator !=(FineTuningJobEventKind left, FineTuningJobEventKind right);
         public override readonly string ToString();
     }
@@ -2425,6 +2447,7 @@ public class FineTuningOptions : IJsonModel<FineTuningOptions>, IPersistableMode
         public override readonly int GetHashCode();
         public static bool operator ==(FineTuningStatus left, FineTuningStatus right);
         public static implicit operator FineTuningStatus(string value);
+        public static implicit operator FineTuningStatus?(string value);
         public static bool operator !=(FineTuningStatus left, FineTuningStatus right);
         public override readonly string ToString();
     }
@@ -2649,6 +2672,7 @@ public class GraderStringCheck : Grader, IJsonModel<GraderStringCheck>, IPersist
         public override readonly int GetHashCode();
         public static bool operator ==(GraderStringCheckOperation left, GraderStringCheckOperation right);
         public static implicit operator GraderStringCheckOperation(string value);
+        public static implicit operator GraderStringCheckOperation?(string value);
         public static bool operator !=(GraderStringCheckOperation left, GraderStringCheckOperation right);
         public override readonly string ToString();
     }
@@ -2682,6 +2706,7 @@ public class GraderTextSimilarity : Grader, IJsonModel<GraderTextSimilarity>, IP
         public override readonly int GetHashCode();
         public static bool operator ==(GraderTextSimilarityEvaluationMetric left, GraderTextSimilarityEvaluationMetric right);
         public static implicit operator GraderTextSimilarityEvaluationMetric(string value);
+        public static implicit operator GraderTextSimilarityEvaluationMetric?(string value);
         public static bool operator !=(GraderTextSimilarityEvaluationMetric left, GraderTextSimilarityEvaluationMetric right);
         public override readonly string ToString();
     }
@@ -2700,6 +2725,7 @@ public class GraderTextSimilarity : Grader, IJsonModel<GraderTextSimilarity>, IP
         public override readonly int GetHashCode();
         public static bool operator ==(GraderType left, GraderType right);
         public static implicit operator GraderType(string value);
+        public static implicit operator GraderType?(string value);
         public static bool operator !=(GraderType left, GraderType right);
         public override readonly string ToString();
     }
@@ -2798,6 +2824,7 @@ public class GeneratedImage : IJsonModel<GeneratedImage>, IPersistableModel<Gene
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedImageBackground left, GeneratedImageBackground right);
         public static implicit operator GeneratedImageBackground(string value);
+        public static implicit operator GeneratedImageBackground?(string value);
         public static bool operator !=(GeneratedImageBackground left, GeneratedImageBackground right);
         public override readonly string ToString();
     }
@@ -2821,6 +2848,7 @@ public class GeneratedImageCollection : ObjectModel.ReadOnlyCollection<Generated
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedImageFileFormat left, GeneratedImageFileFormat right);
         public static implicit operator GeneratedImageFileFormat(string value);
+        public static implicit operator GeneratedImageFileFormat?(string value);
         public static bool operator !=(GeneratedImageFileFormat left, GeneratedImageFileFormat right);
         public override readonly string ToString();
     }
@@ -2835,6 +2863,7 @@ public class GeneratedImageCollection : ObjectModel.ReadOnlyCollection<Generated
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedImageFormat left, GeneratedImageFormat right);
         public static implicit operator GeneratedImageFormat(string value);
+        public static implicit operator GeneratedImageFormat?(string value);
         public static bool operator !=(GeneratedImageFormat left, GeneratedImageFormat right);
         public override readonly string ToString();
     }
@@ -2849,6 +2878,7 @@ public class GeneratedImageCollection : ObjectModel.ReadOnlyCollection<Generated
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedImageModerationLevel left, GeneratedImageModerationLevel right);
         public static implicit operator GeneratedImageModerationLevel(string value);
+        public static implicit operator GeneratedImageModerationLevel?(string value);
         public static bool operator !=(GeneratedImageModerationLevel left, GeneratedImageModerationLevel right);
         public override readonly string ToString();
     }
@@ -2866,6 +2896,7 @@ public class GeneratedImageCollection : ObjectModel.ReadOnlyCollection<Generated
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedImageQuality left, GeneratedImageQuality right);
         public static implicit operator GeneratedImageQuality(string value);
+        public static implicit operator GeneratedImageQuality?(string value);
         public static bool operator !=(GeneratedImageQuality left, GeneratedImageQuality right);
         public override readonly string ToString();
     }
@@ -2899,6 +2930,7 @@ public class GeneratedImageCollection : ObjectModel.ReadOnlyCollection<Generated
         public override readonly int GetHashCode();
         public static bool operator ==(GeneratedImageStyle left, GeneratedImageStyle right);
         public static implicit operator GeneratedImageStyle(string value);
+        public static implicit operator GeneratedImageStyle?(string value);
         public static bool operator !=(GeneratedImageStyle left, GeneratedImageStyle right);
         public override readonly string ToString();
     }
@@ -3142,6 +3174,7 @@ public class ConversationContentPart : IJsonModel<ConversationContentPart>, IPer
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationContentPartKind left, ConversationContentPartKind right);
         public static implicit operator ConversationContentPartKind(string value);
+        public static implicit operator ConversationContentPartKind?(string value);
         public static bool operator !=(ConversationContentPartKind left, ConversationContentPartKind right);
         public override readonly string ToString();
     }
@@ -3168,6 +3201,7 @@ public class ConversationFunctionTool : ConversationTool, IJsonModel<Conversatio
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationIncompleteReason left, ConversationIncompleteReason right);
         public static implicit operator ConversationIncompleteReason(string value);
+        public static implicit operator ConversationIncompleteReason?(string value);
         public static bool operator !=(ConversationIncompleteReason left, ConversationIncompleteReason right);
         public override readonly string ToString();
     }
@@ -3192,6 +3226,7 @@ public class ConversationInputTokenUsageDetails : IJsonModel<ConversationInputTo
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationItemStatus left, ConversationItemStatus right);
         public static implicit operator ConversationItemStatus(string value);
+        public static implicit operator ConversationItemStatus?(string value);
         public static bool operator !=(ConversationItemStatus left, ConversationItemStatus right);
         public override readonly string ToString();
     }
@@ -3215,6 +3250,7 @@ public class ConversationMaxTokensChoice : IJsonModel<ConversationMaxTokensChoic
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationMessageRole left, ConversationMessageRole right);
         public static implicit operator ConversationMessageRole(string value);
+        public static implicit operator ConversationMessageRole?(string value);
         public static bool operator !=(ConversationMessageRole left, ConversationMessageRole right);
         public override readonly string ToString();
     }
@@ -3322,6 +3358,7 @@ public class ConversationSessionStartedUpdate : RealtimeUpdate, IJsonModel<Conve
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationStatus left, ConversationStatus right);
         public static implicit operator ConversationStatus(string value);
+        public static implicit operator ConversationStatus?(string value);
         public static bool operator !=(ConversationStatus left, ConversationStatus right);
         public override readonly string ToString();
     }
@@ -3379,6 +3416,7 @@ public enum ConversationToolChoiceKind {
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationToolKind left, ConversationToolKind right);
         public static implicit operator ConversationToolKind(string value);
+        public static implicit operator ConversationToolKind?(string value);
         public static bool operator !=(ConversationToolKind left, ConversationToolKind right);
         public override readonly string ToString();
     }
@@ -3402,6 +3440,7 @@ public enum ConversationToolChoiceKind {
         public override readonly int GetHashCode();
         public static bool operator ==(ConversationVoice left, ConversationVoice right);
         public static implicit operator ConversationVoice(string value);
+        public static implicit operator ConversationVoice?(string value);
         public static bool operator !=(ConversationVoice left, ConversationVoice right);
         public override readonly string ToString();
     }
@@ -3490,6 +3529,7 @@ public class InputNoiseReductionOptions : IJsonModel<InputNoiseReductionOptions>
         public override readonly int GetHashCode();
         public static bool operator ==(InputTranscriptionModel left, InputTranscriptionModel right);
         public static implicit operator InputTranscriptionModel(string value);
+        public static implicit operator InputTranscriptionModel?(string value);
         public static bool operator !=(InputTranscriptionModel left, InputTranscriptionModel right);
         public override readonly string ToString();
     }
@@ -3643,6 +3683,7 @@ public class RateLimitsUpdate : RealtimeUpdate, IJsonModel<RateLimitsUpdate>, IP
         public override readonly int GetHashCode();
         public static bool operator ==(RealtimeAudioFormat left, RealtimeAudioFormat right);
         public static implicit operator RealtimeAudioFormat(string value);
+        public static implicit operator RealtimeAudioFormat?(string value);
         public static bool operator !=(RealtimeAudioFormat left, RealtimeAudioFormat right);
         public override readonly string ToString();
     }
@@ -3801,6 +3842,7 @@ public enum RealtimeUpdateKind {
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseConversationSelection left, ResponseConversationSelection right);
         public static implicit operator ResponseConversationSelection(string value);
+        public static implicit operator ResponseConversationSelection?(string value);
         public static bool operator !=(ResponseConversationSelection left, ResponseConversationSelection right);
         public override readonly string ToString();
     }
@@ -3839,6 +3881,7 @@ public class ResponseStartedUpdate : RealtimeUpdate, IJsonModel<ResponseStartedU
         public override readonly int GetHashCode();
         public static bool operator ==(SemanticEagernessLevel left, SemanticEagernessLevel right);
         public static implicit operator SemanticEagernessLevel(string value);
+        public static implicit operator SemanticEagernessLevel?(string value);
         public static bool operator !=(SemanticEagernessLevel left, SemanticEagernessLevel right);
         public override readonly string ToString();
     }
@@ -3990,6 +4033,7 @@ public class ComputerOutput : IJsonModel<ComputerOutput>, IPersistableModel<Comp
         public override readonly int GetHashCode();
         public static bool operator ==(ComputerToolEnvironment left, ComputerToolEnvironment right);
         public static implicit operator ComputerToolEnvironment(string value);
+        public static implicit operator ComputerToolEnvironment?(string value);
         public static bool operator !=(ComputerToolEnvironment left, ComputerToolEnvironment right);
         public override readonly string ToString();
     }
@@ -4031,6 +4075,7 @@ public enum FileSearchCallStatus {
         public override readonly int GetHashCode();
         public static bool operator ==(FileSearchToolRanker left, FileSearchToolRanker right);
         public static implicit operator FileSearchToolRanker(string value);
+        public static implicit operator FileSearchToolRanker?(string value);
         public static bool operator !=(FileSearchToolRanker left, FileSearchToolRanker right);
         public override readonly string ToString();
     }
@@ -4301,6 +4346,7 @@ public class ResponseError : IJsonModel<ResponseError>, IPersistableModel<Respon
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseErrorCode left, ResponseErrorCode right);
         public static implicit operator ResponseErrorCode(string value);
+        public static implicit operator ResponseErrorCode?(string value);
         public static bool operator !=(ResponseErrorCode left, ResponseErrorCode right);
         public override readonly string ToString();
     }
@@ -4316,6 +4362,7 @@ public class ResponseError : IJsonModel<ResponseError>, IPersistableModel<Respon
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseImageDetailLevel left, ResponseImageDetailLevel right);
         public static implicit operator ResponseImageDetailLevel(string value);
+        public static implicit operator ResponseImageDetailLevel?(string value);
         public static bool operator !=(ResponseImageDetailLevel left, ResponseImageDetailLevel right);
         public override readonly string ToString();
     }
@@ -4337,6 +4384,7 @@ public class ResponseIncompleteStatusDetails : IJsonModel<ResponseIncompleteStat
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseIncompleteStatusReason left, ResponseIncompleteStatusReason right);
         public static implicit operator ResponseIncompleteStatusReason(string value);
+        public static implicit operator ResponseIncompleteStatusReason?(string value);
         public static bool operator !=(ResponseIncompleteStatusReason left, ResponseIncompleteStatusReason right);
         public override readonly string ToString();
     }
@@ -4433,6 +4481,7 @@ public class ResponseOutputTokenUsageDetails : IJsonModel<ResponseOutputTokenUsa
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseReasoningEffortLevel left, ResponseReasoningEffortLevel right);
         public static implicit operator ResponseReasoningEffortLevel(string value);
+        public static implicit operator ResponseReasoningEffortLevel?(string value);
         public static bool operator !=(ResponseReasoningEffortLevel left, ResponseReasoningEffortLevel right);
         public override readonly string ToString();
     }
@@ -4456,6 +4505,7 @@ public class ResponseReasoningOptions : IJsonModel<ResponseReasoningOptions>, IP
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseReasoningSummaryVerbosity left, ResponseReasoningSummaryVerbosity right);
         public static implicit operator ResponseReasoningSummaryVerbosity(string value);
+        public static implicit operator ResponseReasoningSummaryVerbosity?(string value);
         public static bool operator !=(ResponseReasoningSummaryVerbosity left, ResponseReasoningSummaryVerbosity right);
         public override readonly string ToString();
     }
@@ -4543,6 +4593,7 @@ public enum ResponseToolChoiceKind {
         public override readonly int GetHashCode();
         public static bool operator ==(ResponseTruncationMode left, ResponseTruncationMode right);
         public static implicit operator ResponseTruncationMode(string value);
+        public static implicit operator ResponseTruncationMode?(string value);
         public static bool operator !=(ResponseTruncationMode left, ResponseTruncationMode right);
         public override readonly string ToString();
     }
@@ -4782,6 +4833,7 @@ public enum WebSearchCallStatus {
         public override readonly int GetHashCode();
         public static bool operator ==(WebSearchContextSize left, WebSearchContextSize right);
         public static implicit operator WebSearchContextSize(string value);
+        public static implicit operator WebSearchContextSize?(string value);
         public static bool operator !=(WebSearchContextSize left, WebSearchContextSize right);
         public override readonly string ToString();
     }
@@ -4908,6 +4960,7 @@ public class VectorStoreBatchFileJob : IJsonModel<VectorStoreBatchFileJob>, IPer
         public override readonly int GetHashCode();
         public static bool operator ==(VectorStoreBatchFileJobStatus left, VectorStoreBatchFileJobStatus right);
         public static implicit operator VectorStoreBatchFileJobStatus(string value);
+        public static implicit operator VectorStoreBatchFileJobStatus?(string value);
         public static bool operator !=(VectorStoreBatchFileJobStatus left, VectorStoreBatchFileJobStatus right);
         public override readonly string ToString();
     }
@@ -5001,6 +5054,7 @@ public class VectorStoreCollectionOptions {
         public override readonly int GetHashCode();
         public static bool operator ==(VectorStoreCollectionOrder left, VectorStoreCollectionOrder right);
         public static implicit operator VectorStoreCollectionOrder(string value);
+        public static implicit operator VectorStoreCollectionOrder?(string value);
         public static bool operator !=(VectorStoreCollectionOrder left, VectorStoreCollectionOrder right);
         public override readonly string ToString();
     }
@@ -5091,6 +5145,7 @@ public class VectorStoreFileAssociationError : IJsonModel<VectorStoreFileAssocia
         public override readonly int GetHashCode();
         public static bool operator ==(VectorStoreFileAssociationErrorCode left, VectorStoreFileAssociationErrorCode right);
         public static implicit operator VectorStoreFileAssociationErrorCode(string value);
+        public static implicit operator VectorStoreFileAssociationErrorCode?(string value);
         public static bool operator !=(VectorStoreFileAssociationErrorCode left, VectorStoreFileAssociationErrorCode right);
         public override readonly string ToString();
     }
@@ -5125,6 +5180,7 @@ public class VectorStoreFileCounts : IJsonModel<VectorStoreFileCounts>, IPersist
         public override readonly int GetHashCode();
         public static bool operator ==(VectorStoreFileStatusFilter left, VectorStoreFileStatusFilter right);
         public static implicit operator VectorStoreFileStatusFilter(string value);
+        public static implicit operator VectorStoreFileStatusFilter?(string value);
         public static bool operator !=(VectorStoreFileStatusFilter left, VectorStoreFileStatusFilter right);
         public override readonly string ToString();
     }
diff --git a/codegen/generator/src/OpenAI.Library.Plugin.csproj b/codegen/generator/src/OpenAI.Library.Plugin.csproj
index 2eb08f6e7..869603005 100644
--- a/codegen/generator/src/OpenAI.Library.Plugin.csproj
+++ b/codegen/generator/src/OpenAI.Library.Plugin.csproj
@@ -8,7 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.TypeSpec.Generator.ClientModel" Version="1.0.0-alpha.20250626.7" />
+      <PackageReference Include="Microsoft.TypeSpec.Generator.ClientModel" Version="1.0.0-alpha.20250722.1" />
     </ItemGroup>
 
   <!-- Copy output to package dist path for local execution and  -->
diff --git a/codegen/generator/src/Visitors/OmittedTypesVisitor.cs b/codegen/generator/src/Visitors/OmittedTypesVisitor.cs
index 26c41e1c3..a1ca8b61d 100644
--- a/codegen/generator/src/Visitors/OmittedTypesVisitor.cs
+++ b/codegen/generator/src/Visitors/OmittedTypesVisitor.cs
@@ -1,5 +1,7 @@
 using Microsoft.TypeSpec.Generator.ClientModel;
+using Microsoft.TypeSpec.Generator.Expressions;
 using Microsoft.TypeSpec.Generator.Providers;
+using Microsoft.TypeSpec.Generator.Statements;
 using System.Collections.Generic;
 using System.Linq;
 
@@ -20,10 +22,29 @@ public class OmittedTypesVisitor : ScmLibraryVisitor
 
     protected override TypeProvider? VisitType(TypeProvider type)
     {
-        if (TypeNamesToOmit.Any(typeName => type.Name == typeName))
+        // Strip buildable attributes for omitted types from OpenAIContext
+        if (type.Name == "OpenAIContext")
         {
-            return null;
+            var filtered = new List<AttributeStatement>(type.Attributes.Count);
+            foreach (var a in type.Attributes)
+            {
+                bool drop =
+                    a.Type.Name == "ModelReaderWriterBuildableAttribute" &&
+                    a.Arguments.Count == 1 &&
+                    a.Arguments[0] is TypeOfExpression tof &&
+                    TypeNamesToOmit.Contains(tof.Type.Name);
+
+                if (!drop) filtered.Add(a);
+            }
+
+            if (filtered.Count != type.Attributes.Count)
+                type.Update(attributes: filtered);
         }
-        return type;
+
+        // Omit the types themselves
+        if (TypeNamesToOmit.Contains(type.Name))
+            return null;
+
+        return base.VisitType(type);
     }
 }
\ No newline at end of file
diff --git a/codegen/package.json b/codegen/package.json
index 7013663a4..c3653c9cc 100644
--- a/codegen/package.json
+++ b/codegen/package.json
@@ -29,8 +29,11 @@
     ],
     "dependencies": {
         "@open-ai/plugin": "file:",
-        "@azure-tools/typespec-client-generator-core": "~0.57.0",
-        "@typespec/http-client-csharp": "1.0.0-alpha.20250626.7"
+        "@azure-tools/typespec-client-generator-core": "0.57.2",
+        "@azure-tools/typespec-azure-core": "0.57.0",
+        "@typespec/http-client-csharp": "1.0.0-alpha.20250722.1",
+        "@typespec/http": "1.1.0",
+        "@typespec/openapi": "1.1.0"
     },
     "devDependencies": {
         "@types/node": "^22.8.1",
diff --git a/package-lock.json b/package-lock.json
index f7850543d..cc5c4e631 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,9 +11,7 @@
         "codegen"
       ],
       "dependencies": {
-        "@open-ai/plugin": "file:codegen",
-        "@typespec/openapi3": "^1.0.0",
-        "openai-tsp": "file:"
+        "@open-ai/plugin": "file:codegen"
       }
     },
     "codegen": {
@@ -21,9 +19,12 @@
       "version": "1.0.0",
       "license": "MIT",
       "dependencies": {
-        "@azure-tools/typespec-client-generator-core": "~0.57.0",
+        "@azure-tools/typespec-azure-core": "0.57.0",
+        "@azure-tools/typespec-client-generator-core": "0.57.2",
         "@open-ai/plugin": "file:",
-        "@typespec/http-client-csharp": "1.0.0-alpha.20250626.7"
+        "@typespec/http": "1.1.0",
+        "@typespec/http-client-csharp": "1.0.0-alpha.20250722.1",
+        "@typespec/openapi": "1.1.0"
       },
       "devDependencies": {
         "@types/node": "^22.8.1",
@@ -50,62 +51,11 @@
         "node": ">=6.0.0"
       }
     },
-    "node_modules/@apidevtools/json-schema-ref-parser": {
-      "version": "11.7.2",
-      "resolved": "https://registry.npmjs.org/@apidevtools/json-schema-ref-parser/-/json-schema-ref-parser-11.7.2.tgz",
-      "integrity": "sha512-4gY54eEGEstClvEkGnwVkTkrx0sqwemEFG5OSRRn3tD91XH0+Q8XIkYIfo7IwEWPpJZwILb9GUXeShtplRc/eA==",
-      "license": "MIT",
-      "dependencies": {
-        "@jsdevtools/ono": "^7.1.3",
-        "@types/json-schema": "^7.0.15",
-        "js-yaml": "^4.1.0"
-      },
-      "engines": {
-        "node": ">= 16"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/philsturgeon"
-      }
-    },
-    "node_modules/@apidevtools/openapi-schemas": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/@apidevtools/openapi-schemas/-/openapi-schemas-2.1.0.tgz",
-      "integrity": "sha512-Zc1AlqrJlX3SlpupFGpiLi2EbteyP7fXmUOGup6/DnkRgjP9bgMM/ag+n91rsv0U1Gpz0H3VILA/o3bW7Ua6BQ==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=10"
-      }
-    },
-    "node_modules/@apidevtools/swagger-methods": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/@apidevtools/swagger-methods/-/swagger-methods-3.0.2.tgz",
-      "integrity": "sha512-QAkD5kK2b1WfjDS/UQn/qQkbwF31uqRjPTrsCs5ZG9BQGAkjwvqGFjjPqAuzac/IYzpPtRzjCP1WrTuAIjMrXg==",
-      "license": "MIT"
-    },
-    "node_modules/@apidevtools/swagger-parser": {
-      "version": "10.1.1",
-      "resolved": "https://registry.npmjs.org/@apidevtools/swagger-parser/-/swagger-parser-10.1.1.tgz",
-      "integrity": "sha512-u/kozRnsPO/x8QtKYJOqoGtC4kH6yg1lfYkB9Au0WhYB0FNLpyFusttQtvhlwjtG3rOwiRz4D8DnnXa8iEpIKA==",
-      "license": "MIT",
-      "dependencies": {
-        "@apidevtools/json-schema-ref-parser": "11.7.2",
-        "@apidevtools/openapi-schemas": "^2.1.0",
-        "@apidevtools/swagger-methods": "^3.0.2",
-        "@jsdevtools/ono": "^7.1.3",
-        "ajv": "^8.17.1",
-        "ajv-draft-04": "^1.0.0",
-        "call-me-maybe": "^1.0.2"
-      },
-      "peerDependencies": {
-        "openapi-types": ">=7"
-      }
-    },
     "node_modules/@azure-tools/typespec-azure-core": {
       "version": "0.57.0",
       "resolved": "https://registry.npmjs.org/@azure-tools/typespec-azure-core/-/typespec-azure-core-0.57.0.tgz",
       "integrity": "sha512-O+F3axrJOJHjYGrQLRWoydHtWjWiXeAlaaILncS0I0xe6kinyFkpn7VIVKxH9ZZ+hPmkDAZybO53656R3PRfUA==",
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=20.0.0"
       },
@@ -116,14 +66,14 @@
       }
     },
     "node_modules/@azure-tools/typespec-client-generator-core": {
-      "version": "0.57.1",
-      "resolved": "https://registry.npmjs.org/@azure-tools/typespec-client-generator-core/-/typespec-client-generator-core-0.57.1.tgz",
-      "integrity": "sha512-R91xwSVDQrAf7wk/u2aJDz/zthGjp+RpziVbFeg4+u4BdPP1+fY4WwXCb3wG4fF8GdlkvYZAE0q+HVPsu15gYg==",
+      "version": "0.57.2",
+      "resolved": "https://registry.npmjs.org/@azure-tools/typespec-client-generator-core/-/typespec-client-generator-core-0.57.2.tgz",
+      "integrity": "sha512-/HPdsWAO5aRolTf9pOa1ZFIDpKhi22oZmNj7ypHTjntSJh7bn3Q6tw9J/10n4eyvkUElLVqa691fODfeIZH/qA==",
       "license": "MIT",
       "dependencies": {
         "change-case": "~5.4.4",
         "pluralize": "^8.0.0",
-        "yaml": "~2.7.0"
+        "yaml": "~2.8.0"
       },
       "engines": {
         "node": ">=20.0.0"
@@ -141,6 +91,18 @@
         "@typespec/xml": "^0.71.0"
       }
     },
+    "node_modules/@azure-tools/typespec-client-generator-core/node_modules/yaml": {
+      "version": "2.8.1",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.8.1.tgz",
+      "integrity": "sha512-lcYcMxX2PO9XMGvAJkJ3OsNMw+/7FKes7/hgerGUYWIoWu5j/+YQqcZr5JnPZWzOsEBgMbSbiSTn/dv/69Mkpw==",
+      "license": "ISC",
+      "bin": {
+        "yaml": "bin.mjs"
+      },
+      "engines": {
+        "node": ">= 14.6"
+      }
+    },
     "node_modules/@babel/code-frame": {
       "version": "7.27.1",
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.27.1.tgz",
@@ -1113,12 +1075,6 @@
         "@jridgewell/sourcemap-codec": "^1.4.14"
       }
     },
-    "node_modules/@jsdevtools/ono": {
-      "version": "7.1.3",
-      "resolved": "https://registry.npmjs.org/@jsdevtools/ono/-/ono-7.1.3.tgz",
-      "integrity": "sha512-4JQNk+3mVzK3xh2rqd6RB4J46qUR19azEHBneZyTZM+c456qOrbbM/5xcR8huNCCcbVt7+UmizG6GuUvPvKUYg==",
-      "license": "MIT"
-    },
     "node_modules/@nodelib/fs.scandir": {
       "version": "2.1.5",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
@@ -1490,12 +1446,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/@types/json-schema": {
-      "version": "7.0.15",
-      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.15.tgz",
-      "integrity": "sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA==",
-      "license": "MIT"
-    },
     "node_modules/@types/node": {
       "version": "22.15.33",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-22.15.33.tgz",
@@ -1506,18 +1456,6 @@
         "undici-types": "~6.21.0"
       }
     },
-    "node_modules/@typespec/asset-emitter": {
-      "version": "0.71.0",
-      "resolved": "https://registry.npmjs.org/@typespec/asset-emitter/-/asset-emitter-0.71.0.tgz",
-      "integrity": "sha512-wXDF2kbEPTJksv16mzcEyaz97PUxz1xH/Bl4OFSnvwE5xC1hkb0uKQ2nsunnu4yFzbz6Jmn7aoxM1WlYR5PzkA==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=20.0.0"
-      },
-      "peerDependencies": {
-        "@typespec/compiler": "^1.1.0"
-      }
-    },
     "node_modules/@typespec/compiler": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/@typespec/compiler/-/compiler-1.1.0.tgz",
@@ -1569,7 +1507,6 @@
       "resolved": "https://registry.npmjs.org/@typespec/http/-/http-1.1.0.tgz",
       "integrity": "sha512-1doVGmkv3N8l57fVuci4jGMZ61EZBlDzuNZO2b9o0+mexCOs/P96CIpFkaNVvTQgjpyFsW1DlXiUKAvUC9zQfg==",
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=20.0.0"
       },
@@ -1584,9 +1521,9 @@
       }
     },
     "node_modules/@typespec/http-client-csharp": {
-      "version": "1.0.0-alpha.20250626.7",
-      "resolved": "https://registry.npmjs.org/@typespec/http-client-csharp/-/http-client-csharp-1.0.0-alpha.20250626.7.tgz",
-      "integrity": "sha512-aYtA/g3UaHEVjFG1290BcHB4hw8z6ZSwa0bEBjbwlhprW3vV6KKP0J11ONFllMHX7I5skpdj9jNRrBJuZyeuKg==",
+      "version": "1.0.0-alpha.20250722.1",
+      "resolved": "https://registry.npmjs.org/@typespec/http-client-csharp/-/http-client-csharp-1.0.0-alpha.20250722.1.tgz",
+      "integrity": "sha512-dKcFGXM+Bm0iJdmdTFCQwrNyI9RQ5XwIyXpRI15z/zbLL7qdrbO9cyp1IP2H0A7jI6/rdfkMaKv6m9KTAgi/wA==",
       "license": "MIT",
       "peerDependencies": {
         "@azure-tools/typespec-azure-core": ">=0.57.0 <0.58.0 || ~0.58.0-0",
@@ -1603,7 +1540,6 @@
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       "integrity": "sha512-HPvrpSS7eSVk3fEkWndcDTrAZssWRYv3FyDTqVqljildc7FAiXdo88+r5CCK8endmgIrES7uJdHLkcIGUZx1pg==",
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=20.0.0"
       },
@@ -1612,42 +1548,6 @@
         "@typespec/http": "^1.1.0"
       }
     },
-    "node_modules/@typespec/openapi3": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/@typespec/openapi3/-/openapi3-1.1.0.tgz",
-      "integrity": "sha512-+1Ue7+M/PkNX54H6SJAym5ONHzlW7s5ZnA4fCH5jwKvalvI94stMvefOpd8FAesJDVmXc3wZ0kiqYo5EuMTjOQ==",
-      "license": "MIT",
-      "dependencies": {
-        "@apidevtools/swagger-parser": "~10.1.1",
-        "@typespec/asset-emitter": "^0.71.0",
-        "openapi-types": "~12.1.3",
-        "yaml": "~2.7.0"
-      },
-      "bin": {
-        "tsp-openapi3": "cmd/tsp-openapi3.js"
-      },
-      "engines": {
-        "node": ">=20.0.0"
-      },
-      "peerDependencies": {
-        "@typespec/compiler": "^1.1.0",
-        "@typespec/http": "^1.1.0",
-        "@typespec/json-schema": "^1.1.0",
-        "@typespec/openapi": "^1.1.0",
-        "@typespec/versioning": "^0.71.0"
-      },
-      "peerDependenciesMeta": {
-        "@typespec/json-schema": {
-          "optional": true
-        },
-        "@typespec/versioning": {
-          "optional": true
-        },
-        "@typespec/xml": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/@typespec/rest": {
       "version": "0.71.0",
       "resolved": "https://registry.npmjs.org/@typespec/rest/-/rest-0.71.0.tgz",
@@ -1901,6 +1801,7 @@
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-8.17.1.tgz",
       "integrity": "sha512-B/gBuNg5SiMTrPkC+A2+cW0RszwxYmn6VYxB/inlBStS5nx6xHIt/ehKRhIMhqusl7a8LjQoZnjCs5vhwxOQ1g==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "fast-deep-equal": "^3.1.3",
         "fast-uri": "^3.0.1",
@@ -1912,20 +1813,6 @@
         "url": "https://github.com/sponsors/epoberezkin"
       }
     },
-    "node_modules/ajv-draft-04": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/ajv-draft-04/-/ajv-draft-04-1.0.0.tgz",
-      "integrity": "sha512-mv00Te6nmYbRp5DCwclxtt7yV/joXJPGS7nM+97GdxvuttCOfgI3K4U25zboyeX0O+myI8ERluxQe5wljMmVIw==",
-      "license": "MIT",
-      "peerDependencies": {
-        "ajv": "^8.5.0"
-      },
-      "peerDependenciesMeta": {
-        "ajv": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/ansi-escapes": {
       "version": "4.3.2",
       "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-4.3.2.tgz",
@@ -1966,12 +1853,6 @@
         "url": "https://github.com/chalk/ansi-styles?sponsor=1"
       }
     },
-    "node_modules/argparse": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
-      "integrity": "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==",
-      "license": "Python-2.0"
-    },
     "node_modules/assertion-error": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-1.1.0.tgz",
@@ -2048,12 +1929,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/call-me-maybe": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/call-me-maybe/-/call-me-maybe-1.0.2.tgz",
-      "integrity": "sha512-HpX65o1Hnr9HH25ojC1YGs7HCQLq0GCOibSaWER0eNpgJ/Z1MZv2mTc7+xh6WOPxbRVcmgbv4hGU+uSQ/2xFZQ==",
-      "license": "MIT"
-    },
     "node_modules/chai": {
       "version": "4.5.0",
       "resolved": "https://registry.npmjs.org/chai/-/chai-4.5.0.tgz",
@@ -2471,7 +2346,8 @@
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
       "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
-      "license": "MIT"
+      "license": "MIT",
+      "peer": true
     },
     "node_modules/fast-glob": {
       "version": "3.3.3",
@@ -2503,7 +2379,8 @@
           "url": "https://opencollective.com/fastify"
         }
       ],
-      "license": "BSD-3-Clause"
+      "license": "BSD-3-Clause",
+      "peer": true
     },
     "node_modules/fastq": {
       "version": "1.19.1",
@@ -2908,23 +2785,12 @@
       "license": "MIT",
       "peer": true
     },
-    "node_modules/js-yaml": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.0.tgz",
-      "integrity": "sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==",
-      "license": "MIT",
-      "dependencies": {
-        "argparse": "^2.0.1"
-      },
-      "bin": {
-        "js-yaml": "bin/js-yaml.js"
-      }
-    },
     "node_modules/json-schema-traverse": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz",
       "integrity": "sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==",
-      "license": "MIT"
+      "license": "MIT",
+      "peer": true
     },
     "node_modules/local-pkg": {
       "version": "0.5.1",
@@ -3249,16 +3115,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/openai-tsp": {
-      "resolved": "",
-      "link": true
-    },
-    "node_modules/openapi-types": {
-      "version": "12.1.3",
-      "resolved": "https://registry.npmjs.org/openapi-types/-/openapi-types-12.1.3.tgz",
-      "integrity": "sha512-N4YtSYJqghVu4iek2ZUvcN/0aqH1kRDuNqzcycDxhOUpg7GdvLa2F3DgS6yBNhInhv2r/6I0Flkn7CqL8+nIcw==",
-      "license": "MIT"
-    },
     "node_modules/os-tmpdir": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/os-tmpdir/-/os-tmpdir-1.0.2.tgz",
@@ -3565,6 +3421,7 @@
       "resolved": "https://registry.npmjs.org/require-from-string/-/require-from-string-2.0.2.tgz",
       "integrity": "sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==",
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=0.10.0"
       }
@@ -4491,6 +4348,7 @@
       "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.7.1.tgz",
       "integrity": "sha512-10ULxpnOCQXxJvBgxsn9ptjq6uviG/htZKk9veJGhlqn3w/DxQ631zFF+nlQXLwmImeS5amR2dl2U8sg6U9jsQ==",
       "license": "ISC",
+      "peer": true,
       "bin": {
         "yaml": "bin.mjs"
       },
diff --git a/package.json b/package.json
index 391563d4c..aab5906fa 100644
--- a/package.json
+++ b/package.json
@@ -6,9 +6,7 @@
   "version": "0.1.0",
   "type": "module",
   "dependencies": {
-    "@typespec/openapi3": "^1.0.0",
-    "@open-ai/plugin": "file:codegen",
-    "openai-tsp": "file:"
+    "@open-ai/plugin": "file:codegen"
   },
   "private": true
 }
\ No newline at end of file
diff --git a/src/Custom/OpenAIContext.cs b/src/Custom/OpenAIContext.cs
deleted file mode 100644
index 5937afb63..000000000
--- a/src/Custom/OpenAIContext.cs
+++ /dev/null
@@ -1,267 +0,0 @@
-#nullable disable
-
-using System.ClientModel.Internal;
-using System.ClientModel.Primitives;
-using System.Diagnostics.CodeAnalysis;
-
-namespace OpenAI
-{
-    [Experimental("OPENAI001")]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.Assistant))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.AssistantChatMessage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.AssistantCreationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.AssistantDeletionResult))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.AssistantModificationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.AssistantResponseFormat))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.AssistantThread))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Audio.AudioTokenLogProbabilityDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Audio.AudioTranscription))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Audio.AudioTranscriptionOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Audio.AudioTranslation))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Audio.AudioTranslationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatAudioOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatCompletion))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatCompletionDeletionResult))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatCompletionOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatFunction))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatFunctionCall))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatFunctionChoice))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatInputTokenUsageDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatMessage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatMessageAnnotation))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatMessageContentPart))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatOutputAudio))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatOutputAudioReference))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatOutputPrediction))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatOutputTokenUsageDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatResponseFormat))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatTokenLogProbabilityDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatTokenTopLogProbabilityDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatTokenUsage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatTool))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatToolCall))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatToolChoice))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ChatWebSearchOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.CodeInterpreterToolDefinition))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.CodeInterpreterToolResources))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ComputerCallAction))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ComputerCallOutputResponseItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ComputerCallResponseItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ComputerCallSafetyCheck))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ComputerOutput))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationContentPart))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationFunctionTool))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationInputTokenUsageDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationMaxTokensChoice))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationOutputTokenUsageDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationRateLimitDetailsItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationResponseOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationSessionConfiguredUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationSessionOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationSessionStartedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationStatusDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationTokenUsage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationTool))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ConversationToolChoice))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.DeveloperChatMessage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Embeddings.EmbeddingGenerationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Embeddings.EmbeddingTokenUsage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.VectorStores.FileChunkingStrategy))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Files.FileDeletionResult))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.VectorStores.FileFromStoreRemovalResult))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.FileSearchCallResponseItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.FileSearchCallResult))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.FileSearchRankingOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.FileSearchToolDefinition))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.FileSearchToolRankingOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.FileSearchToolResources))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.FineTuningCheckpoint))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.FineTuningCheckpointMetrics))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.FineTuningError))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.FineTuningEvent))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.FineTuningIntegration))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.FineTuningIntegrationWandbWandb))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.FineTuningOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.FineTuningTrainingMethod))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.FunctionCallOutputResponseItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.FunctionCallResponseItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.FunctionChatMessage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.FunctionToolDefinition))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Images.GeneratedImage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Images.GeneratedImageCollection))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.HyperparameterOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.HyperparametersForDPO))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.HyperparametersForSupervised))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Images.ImageEditOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Images.ImageGenerationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Images.ImageInputTokenUsageDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Images.ImageTokenUsage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Images.ImageVariationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.InputAudioClearedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.InputAudioCommittedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.InputAudioSpeechFinishedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.InputAudioSpeechStartedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.InputAudioTranscriptionDeltaUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.InputAudioTranscriptionFailedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.InputAudioTranscriptionFinishedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.InputNoiseReductionOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.InputTranscriptionOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ItemCreatedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ItemDeletedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ItemRetrievedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ItemTruncatedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.MessageContent))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.MessageCreationAttachment))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.MessageCreationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.MessageDeletionResult))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.MessageFailureDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.MessageModificationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.MessageResponseItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Models.ModelDeletionResult))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Moderations.ModerationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Moderations.ModerationResult))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Moderations.ModerationResultCollection))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Embeddings.OpenAIEmbedding))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Embeddings.OpenAIEmbeddingCollection))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Internal.OpenAIError))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Internal.OpenAIErrorResponse))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Files.OpenAIFile))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Files.OpenAIFileCollection))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Models.OpenAIModel))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Models.OpenAIModelCollection))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.OpenAIResponse))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.OutputAudioFinishedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.OutputAudioTranscriptionFinishedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.OutputDeltaUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.OutputPartFinishedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.OutputStreamingFinishedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.OutputStreamingStartedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.OutputTextFinishedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.RateLimitsUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.RealtimeErrorUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.RealtimeItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.RealtimeUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ReasoningResponseItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ReasoningSummaryPart))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ReasoningSummaryTextPart))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ReferenceResponseItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseContentPart))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseCreationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseDeletionResult))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseError))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ResponseFinishedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseIncompleteStatusDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseInputTokenUsageDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseMessageAnnotation))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseOutputTokenUsageDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseReasoningOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.ResponseStartedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseTextFormat))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseTextOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseTokenUsage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseTool))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.ResponseToolChoice))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunCreationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunError))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunIncompleteDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunModificationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunStep))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunStepCodeInterpreterOutput))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunStepDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunStepError))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunStepFileSearchResult))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunStepFileSearchResultContent))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunStepTokenUsage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunStepToolCall))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunStepUpdateCodeInterpreterOutput))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunTokenUsage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.RunTruncationStrategy))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Audio.SpeechGenerationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.VectorStores.StaticFileChunkingStrategy))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Audio.StreamingAudioTranscriptionTextDeltaUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Audio.StreamingAudioTranscriptionTextDoneUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Audio.StreamingAudioTranscriptionUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.StreamingChatCompletionUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.StreamingChatFunctionCallUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.StreamingChatOutputAudioUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.StreamingChatToolCallUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseCompletedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseContentPartAddedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseContentPartDoneUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseCreatedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseErrorUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseFailedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseFileSearchCallCompletedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseFileSearchCallInProgressUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseFileSearchCallSearchingUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseFunctionCallArgumentsDeltaUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseFunctionCallArgumentsDoneUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseIncompleteUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseInProgressUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseOutputItemAddedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseOutputItemDoneUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseOutputTextDeltaUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseOutputTextDoneUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseQueuedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseRefusalDeltaUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseRefusalDoneUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseTextAnnotationAddedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseWebSearchCallCompletedUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseWebSearchCallInProgressUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.StreamingResponseWebSearchCallSearchingUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.SystemChatMessage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.ThreadCreationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.ThreadDeletionResult))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.ThreadMessage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.ThreadModificationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.ThreadRun))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.ToolChatMessage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.ToolConstraint))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.ToolDefinition))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.ToolOutput))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.ToolResources))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.TranscriptionSessionConfiguredUpdate))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.TranscriptionSessionOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.TurnDetectionOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.UnknownAssistantToolDefinition))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.UnknownCreateFineTuningJobRequestIntegration))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.UnknownFineTuningIntegration))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.UnknownMessageContentTextObjectAnnotation))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.UnknownMessageDeltaContent))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.UnknownMessageDeltaTextContentAnnotation))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.UnknownRealtimeClientEvent))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.UnknownRealtimeContentPart))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.UnknownRealtimeRequestItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.UnknownRealtimeRequestMessageItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.UnknownRealtimeResponseItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.UnknownRealtimeServerEvent))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.UnknownRealtimeTool))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.UnknownRealtimeToolChoiceObject))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Realtime.UnknownRealtimeTurnDetection))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.UnknownResponseStreamEvent))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.UnknownRunStepDeltaStepDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.UnknownRunStepDeltaStepDetailsToolCallsCodeObjectCodeInterpreterOutputsObject))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.UnknownRunStepDeltaStepDetailsToolCallsObjectToolCallsObject))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.UnknownRunStepDetailsToolCallsCodeObjectCodeInterpreterOutputsObject))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.UnknownRunStepDetailsToolCallsObjectToolCallsObject))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.UnknownRunStepObjectStepDetails))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Chat.UserChatMessage))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.VectorStores.VectorStore))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.VectorStores.VectorStoreBatchFileJob))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Assistants.VectorStoreCreationHelper))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.VectorStores.VectorStoreCreationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.VectorStores.VectorStoreDeletionResult))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.VectorStores.VectorStoreExpirationPolicy))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.VectorStores.VectorStoreFileAssociation))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.VectorStores.VectorStoreFileAssociationError))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.VectorStores.VectorStoreFileCounts))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.VectorStores.VectorStoreModificationOptions))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.WebSearchCallResponseItem))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.Responses.WebSearchUserLocation))]
-    [ModelReaderWriterBuildable(typeof(OpenAI.FineTuning.WeightsAndBiasesIntegration))]
-    public partial class OpenAIContext
-    {
-    }
-}
diff --git a/src/Generated/Models/Assistants/FileSearchRanker.cs b/src/Generated/Models/Assistants/FileSearchRanker.cs
index 1397571c0..a2f6cdd2f 100644
--- a/src/Generated/Models/Assistants/FileSearchRanker.cs
+++ b/src/Generated/Models/Assistants/FileSearchRanker.cs
@@ -33,6 +33,8 @@ public FileSearchRanker(string value)
 
         public static implicit operator FileSearchRanker(string value) => new FileSearchRanker(value);
 
+        public static implicit operator FileSearchRanker?(string value) => value == null ? null : new FileSearchRanker(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is FileSearchRanker other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalAssistantSupportedModels.cs b/src/Generated/Models/Assistants/InternalAssistantSupportedModels.cs
index 861194072..f6342b535 100644
--- a/src/Generated/Models/Assistants/InternalAssistantSupportedModels.cs
+++ b/src/Generated/Models/Assistants/InternalAssistantSupportedModels.cs
@@ -133,6 +133,8 @@ public InternalAssistantSupportedModels(string value)
 
         public static implicit operator InternalAssistantSupportedModels(string value) => new InternalAssistantSupportedModels(value);
 
+        public static implicit operator InternalAssistantSupportedModels?(string value) => value == null ? null : new InternalAssistantSupportedModels(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalAssistantSupportedModels other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalAssistantToolDefinitionType.cs b/src/Generated/Models/Assistants/InternalAssistantToolDefinitionType.cs
index e3b92b801..888d93adf 100644
--- a/src/Generated/Models/Assistants/InternalAssistantToolDefinitionType.cs
+++ b/src/Generated/Models/Assistants/InternalAssistantToolDefinitionType.cs
@@ -34,6 +34,8 @@ public InternalAssistantToolDefinitionType(string value)
 
         public static implicit operator InternalAssistantToolDefinitionType(string value) => new InternalAssistantToolDefinitionType(value);
 
+        public static implicit operator InternalAssistantToolDefinitionType?(string value) => value == null ? null : new InternalAssistantToolDefinitionType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalAssistantToolDefinitionType other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalAssistantsNamedToolChoiceType.cs b/src/Generated/Models/Assistants/InternalAssistantsNamedToolChoiceType.cs
index 0ef9c9c7d..c19460440 100644
--- a/src/Generated/Models/Assistants/InternalAssistantsNamedToolChoiceType.cs
+++ b/src/Generated/Models/Assistants/InternalAssistantsNamedToolChoiceType.cs
@@ -34,6 +34,8 @@ public InternalAssistantsNamedToolChoiceType(string value)
 
         public static implicit operator InternalAssistantsNamedToolChoiceType(string value) => new InternalAssistantsNamedToolChoiceType(value);
 
+        public static implicit operator InternalAssistantsNamedToolChoiceType?(string value) => value == null ? null : new InternalAssistantsNamedToolChoiceType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalAssistantsNamedToolChoiceType other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalCreateThreadAndRunRequestModel.cs b/src/Generated/Models/Assistants/InternalCreateThreadAndRunRequestModel.cs
index d9aa2f1ef..93c10a07d 100644
--- a/src/Generated/Models/Assistants/InternalCreateThreadAndRunRequestModel.cs
+++ b/src/Generated/Models/Assistants/InternalCreateThreadAndRunRequestModel.cs
@@ -121,6 +121,8 @@ public InternalCreateThreadAndRunRequestModel(string value)
 
         public static implicit operator InternalCreateThreadAndRunRequestModel(string value) => new InternalCreateThreadAndRunRequestModel(value);
 
+        public static implicit operator InternalCreateThreadAndRunRequestModel?(string value) => value == null ? null : new InternalCreateThreadAndRunRequestModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateThreadAndRunRequestModel other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalCreateThreadAndRunRequestToolChoice.cs b/src/Generated/Models/Assistants/InternalCreateThreadAndRunRequestToolChoice.cs
index aed6de1ca..262138c3e 100644
--- a/src/Generated/Models/Assistants/InternalCreateThreadAndRunRequestToolChoice.cs
+++ b/src/Generated/Models/Assistants/InternalCreateThreadAndRunRequestToolChoice.cs
@@ -34,6 +34,8 @@ public InternalCreateThreadAndRunRequestToolChoice(string value)
 
         public static implicit operator InternalCreateThreadAndRunRequestToolChoice(string value) => new InternalCreateThreadAndRunRequestToolChoice(value);
 
+        public static implicit operator InternalCreateThreadAndRunRequestToolChoice?(string value) => value == null ? null : new InternalCreateThreadAndRunRequestToolChoice(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateThreadAndRunRequestToolChoice other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalIncludedRunStepProperty.cs b/src/Generated/Models/Assistants/InternalIncludedRunStepProperty.cs
index 6ea802fa4..a2452de75 100644
--- a/src/Generated/Models/Assistants/InternalIncludedRunStepProperty.cs
+++ b/src/Generated/Models/Assistants/InternalIncludedRunStepProperty.cs
@@ -28,6 +28,8 @@ public InternalIncludedRunStepProperty(string value)
 
         public static implicit operator InternalIncludedRunStepProperty(string value) => new InternalIncludedRunStepProperty(value);
 
+        public static implicit operator InternalIncludedRunStepProperty?(string value) => value == null ? null : new InternalIncludedRunStepProperty(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalIncludedRunStepProperty other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalMessageContentImageFileObjectImageFileDetail.cs b/src/Generated/Models/Assistants/InternalMessageContentImageFileObjectImageFileDetail.cs
index ced090438..7d9fa906e 100644
--- a/src/Generated/Models/Assistants/InternalMessageContentImageFileObjectImageFileDetail.cs
+++ b/src/Generated/Models/Assistants/InternalMessageContentImageFileObjectImageFileDetail.cs
@@ -34,6 +34,8 @@ public InternalMessageContentImageFileObjectImageFileDetail(string value)
 
         public static implicit operator InternalMessageContentImageFileObjectImageFileDetail(string value) => new InternalMessageContentImageFileObjectImageFileDetail(value);
 
+        public static implicit operator InternalMessageContentImageFileObjectImageFileDetail?(string value) => value == null ? null : new InternalMessageContentImageFileObjectImageFileDetail(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalMessageContentImageFileObjectImageFileDetail other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalMessageContentImageUrlObjectImageUrlDetail.cs b/src/Generated/Models/Assistants/InternalMessageContentImageUrlObjectImageUrlDetail.cs
index 1bc5a670d..136fc25c2 100644
--- a/src/Generated/Models/Assistants/InternalMessageContentImageUrlObjectImageUrlDetail.cs
+++ b/src/Generated/Models/Assistants/InternalMessageContentImageUrlObjectImageUrlDetail.cs
@@ -34,6 +34,8 @@ public InternalMessageContentImageUrlObjectImageUrlDetail(string value)
 
         public static implicit operator InternalMessageContentImageUrlObjectImageUrlDetail(string value) => new InternalMessageContentImageUrlObjectImageUrlDetail(value);
 
+        public static implicit operator InternalMessageContentImageUrlObjectImageUrlDetail?(string value) => value == null ? null : new InternalMessageContentImageUrlObjectImageUrlDetail(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalMessageContentImageUrlObjectImageUrlDetail other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalMessageContentTextAnnotationType.cs b/src/Generated/Models/Assistants/InternalMessageContentTextAnnotationType.cs
index 3cdd76bf7..f51e9f042 100644
--- a/src/Generated/Models/Assistants/InternalMessageContentTextAnnotationType.cs
+++ b/src/Generated/Models/Assistants/InternalMessageContentTextAnnotationType.cs
@@ -31,6 +31,8 @@ public InternalMessageContentTextAnnotationType(string value)
 
         public static implicit operator InternalMessageContentTextAnnotationType(string value) => new InternalMessageContentTextAnnotationType(value);
 
+        public static implicit operator InternalMessageContentTextAnnotationType?(string value) => value == null ? null : new InternalMessageContentTextAnnotationType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalMessageContentTextAnnotationType other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalMessageContentType.cs b/src/Generated/Models/Assistants/InternalMessageContentType.cs
index 32bfdc487..bbf5f9b4f 100644
--- a/src/Generated/Models/Assistants/InternalMessageContentType.cs
+++ b/src/Generated/Models/Assistants/InternalMessageContentType.cs
@@ -37,6 +37,8 @@ public InternalMessageContentType(string value)
 
         public static implicit operator InternalMessageContentType(string value) => new InternalMessageContentType(value);
 
+        public static implicit operator InternalMessageContentType?(string value) => value == null ? null : new InternalMessageContentType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalMessageContentType other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalMessageDeltaContentImageFileObjectImageFileDetail.cs b/src/Generated/Models/Assistants/InternalMessageDeltaContentImageFileObjectImageFileDetail.cs
index 50e7509f1..331214cae 100644
--- a/src/Generated/Models/Assistants/InternalMessageDeltaContentImageFileObjectImageFileDetail.cs
+++ b/src/Generated/Models/Assistants/InternalMessageDeltaContentImageFileObjectImageFileDetail.cs
@@ -34,6 +34,8 @@ public InternalMessageDeltaContentImageFileObjectImageFileDetail(string value)
 
         public static implicit operator InternalMessageDeltaContentImageFileObjectImageFileDetail(string value) => new InternalMessageDeltaContentImageFileObjectImageFileDetail(value);
 
+        public static implicit operator InternalMessageDeltaContentImageFileObjectImageFileDetail?(string value) => value == null ? null : new InternalMessageDeltaContentImageFileObjectImageFileDetail(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalMessageDeltaContentImageFileObjectImageFileDetail other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalMessageDeltaContentImageUrlObjectImageUrlDetail.cs b/src/Generated/Models/Assistants/InternalMessageDeltaContentImageUrlObjectImageUrlDetail.cs
index 8e2561eec..2851de157 100644
--- a/src/Generated/Models/Assistants/InternalMessageDeltaContentImageUrlObjectImageUrlDetail.cs
+++ b/src/Generated/Models/Assistants/InternalMessageDeltaContentImageUrlObjectImageUrlDetail.cs
@@ -34,6 +34,8 @@ public InternalMessageDeltaContentImageUrlObjectImageUrlDetail(string value)
 
         public static implicit operator InternalMessageDeltaContentImageUrlObjectImageUrlDetail(string value) => new InternalMessageDeltaContentImageUrlObjectImageUrlDetail(value);
 
+        public static implicit operator InternalMessageDeltaContentImageUrlObjectImageUrlDetail?(string value) => value == null ? null : new InternalMessageDeltaContentImageUrlObjectImageUrlDetail(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalMessageDeltaContentImageUrlObjectImageUrlDetail other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalMessageDeltaObjectDeltaRole.cs b/src/Generated/Models/Assistants/InternalMessageDeltaObjectDeltaRole.cs
index 6fdc364ba..246cb166e 100644
--- a/src/Generated/Models/Assistants/InternalMessageDeltaObjectDeltaRole.cs
+++ b/src/Generated/Models/Assistants/InternalMessageDeltaObjectDeltaRole.cs
@@ -31,6 +31,8 @@ public InternalMessageDeltaObjectDeltaRole(string value)
 
         public static implicit operator InternalMessageDeltaObjectDeltaRole(string value) => new InternalMessageDeltaObjectDeltaRole(value);
 
+        public static implicit operator InternalMessageDeltaObjectDeltaRole?(string value) => value == null ? null : new InternalMessageDeltaObjectDeltaRole(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalMessageDeltaObjectDeltaRole other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalMessageObjectRole.cs b/src/Generated/Models/Assistants/InternalMessageObjectRole.cs
index 1381808ed..6ae5cc61f 100644
--- a/src/Generated/Models/Assistants/InternalMessageObjectRole.cs
+++ b/src/Generated/Models/Assistants/InternalMessageObjectRole.cs
@@ -31,6 +31,8 @@ public InternalMessageObjectRole(string value)
 
         public static implicit operator InternalMessageObjectRole(string value) => new InternalMessageObjectRole(value);
 
+        public static implicit operator InternalMessageObjectRole?(string value) => value == null ? null : new InternalMessageObjectRole(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalMessageObjectRole other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalRunStepDetailsCodeInterpreterOutputType.cs b/src/Generated/Models/Assistants/InternalRunStepDetailsCodeInterpreterOutputType.cs
index 43ffda452..f5c8b1782 100644
--- a/src/Generated/Models/Assistants/InternalRunStepDetailsCodeInterpreterOutputType.cs
+++ b/src/Generated/Models/Assistants/InternalRunStepDetailsCodeInterpreterOutputType.cs
@@ -31,6 +31,8 @@ public InternalRunStepDetailsCodeInterpreterOutputType(string value)
 
         public static implicit operator InternalRunStepDetailsCodeInterpreterOutputType(string value) => new InternalRunStepDetailsCodeInterpreterOutputType(value);
 
+        public static implicit operator InternalRunStepDetailsCodeInterpreterOutputType?(string value) => value == null ? null : new InternalRunStepDetailsCodeInterpreterOutputType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRunStepDetailsCodeInterpreterOutputType other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalRunStepDetailsType.cs b/src/Generated/Models/Assistants/InternalRunStepDetailsType.cs
index 7d7ba6503..ed890b3ba 100644
--- a/src/Generated/Models/Assistants/InternalRunStepDetailsType.cs
+++ b/src/Generated/Models/Assistants/InternalRunStepDetailsType.cs
@@ -31,6 +31,8 @@ public InternalRunStepDetailsType(string value)
 
         public static implicit operator InternalRunStepDetailsType(string value) => new InternalRunStepDetailsType(value);
 
+        public static implicit operator InternalRunStepDetailsType?(string value) => value == null ? null : new InternalRunStepDetailsType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRunStepDetailsType other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/InternalTruncationObjectType.cs b/src/Generated/Models/Assistants/InternalTruncationObjectType.cs
index 55d2371bc..b48cf8351 100644
--- a/src/Generated/Models/Assistants/InternalTruncationObjectType.cs
+++ b/src/Generated/Models/Assistants/InternalTruncationObjectType.cs
@@ -31,6 +31,8 @@ public InternalTruncationObjectType(string value)
 
         public static implicit operator InternalTruncationObjectType(string value) => new InternalTruncationObjectType(value);
 
+        public static implicit operator InternalTruncationObjectType?(string value) => value == null ? null : new InternalTruncationObjectType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalTruncationObjectType other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/MessageFailureReason.cs b/src/Generated/Models/Assistants/MessageFailureReason.cs
index 3a2a0ac51..ae565dcd7 100644
--- a/src/Generated/Models/Assistants/MessageFailureReason.cs
+++ b/src/Generated/Models/Assistants/MessageFailureReason.cs
@@ -42,6 +42,8 @@ public MessageFailureReason(string value)
 
         public static implicit operator MessageFailureReason(string value) => new MessageFailureReason(value);
 
+        public static implicit operator MessageFailureReason?(string value) => value == null ? null : new MessageFailureReason(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is MessageFailureReason other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/MessageStatus.cs b/src/Generated/Models/Assistants/MessageStatus.cs
index 041421851..75a785404 100644
--- a/src/Generated/Models/Assistants/MessageStatus.cs
+++ b/src/Generated/Models/Assistants/MessageStatus.cs
@@ -36,6 +36,8 @@ public MessageStatus(string value)
 
         public static implicit operator MessageStatus(string value) => new MessageStatus(value);
 
+        public static implicit operator MessageStatus?(string value) => value == null ? null : new MessageStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is MessageStatus other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/RunErrorCode.cs b/src/Generated/Models/Assistants/RunErrorCode.cs
index d42f1fcd0..6e716acdb 100644
--- a/src/Generated/Models/Assistants/RunErrorCode.cs
+++ b/src/Generated/Models/Assistants/RunErrorCode.cs
@@ -36,6 +36,8 @@ public RunErrorCode(string value)
 
         public static implicit operator RunErrorCode(string value) => new RunErrorCode(value);
 
+        public static implicit operator RunErrorCode?(string value) => value == null ? null : new RunErrorCode(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is RunErrorCode other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/RunIncompleteReason.cs b/src/Generated/Models/Assistants/RunIncompleteReason.cs
index 4fb57faf6..5f281b571 100644
--- a/src/Generated/Models/Assistants/RunIncompleteReason.cs
+++ b/src/Generated/Models/Assistants/RunIncompleteReason.cs
@@ -29,6 +29,8 @@ public RunIncompleteReason(string value)
 
         public static implicit operator RunIncompleteReason(string value) => new RunIncompleteReason(value);
 
+        public static implicit operator RunIncompleteReason?(string value) => value == null ? null : new RunIncompleteReason(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is RunIncompleteReason other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/RunStatus.cs b/src/Generated/Models/Assistants/RunStatus.cs
index 2adc7f2bf..27e18fe83 100644
--- a/src/Generated/Models/Assistants/RunStatus.cs
+++ b/src/Generated/Models/Assistants/RunStatus.cs
@@ -54,6 +54,8 @@ public RunStatus(string value)
 
         public static implicit operator RunStatus(string value) => new RunStatus(value);
 
+        public static implicit operator RunStatus?(string value) => value == null ? null : new RunStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is RunStatus other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/RunStepErrorCode.cs b/src/Generated/Models/Assistants/RunStepErrorCode.cs
index fa09318b8..57ea7a8dc 100644
--- a/src/Generated/Models/Assistants/RunStepErrorCode.cs
+++ b/src/Generated/Models/Assistants/RunStepErrorCode.cs
@@ -33,6 +33,8 @@ public RunStepErrorCode(string value)
 
         public static implicit operator RunStepErrorCode(string value) => new RunStepErrorCode(value);
 
+        public static implicit operator RunStepErrorCode?(string value) => value == null ? null : new RunStepErrorCode(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is RunStepErrorCode other && Equals(other);
 
diff --git a/src/Generated/Models/Assistants/RunStepStatus.cs b/src/Generated/Models/Assistants/RunStepStatus.cs
index f815a2841..498c12059 100644
--- a/src/Generated/Models/Assistants/RunStepStatus.cs
+++ b/src/Generated/Models/Assistants/RunStepStatus.cs
@@ -42,6 +42,8 @@ public RunStepStatus(string value)
 
         public static implicit operator RunStepStatus(string value) => new RunStepStatus(value);
 
+        public static implicit operator RunStepStatus?(string value) => value == null ? null : new RunStepStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is RunStepStatus other && Equals(other);
 
diff --git a/src/Generated/Models/Audio/AudioTranscriptionFormat.cs b/src/Generated/Models/Audio/AudioTranscriptionFormat.cs
index 0c2834261..9090c46b4 100644
--- a/src/Generated/Models/Audio/AudioTranscriptionFormat.cs
+++ b/src/Generated/Models/Audio/AudioTranscriptionFormat.cs
@@ -30,6 +30,8 @@ public AudioTranscriptionFormat(string value)
 
         public static implicit operator AudioTranscriptionFormat(string value) => new AudioTranscriptionFormat(value);
 
+        public static implicit operator AudioTranscriptionFormat?(string value) => value == null ? null : new AudioTranscriptionFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is AudioTranscriptionFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Audio/AudioTranslationFormat.cs b/src/Generated/Models/Audio/AudioTranslationFormat.cs
index 8d0be5459..fbad90604 100644
--- a/src/Generated/Models/Audio/AudioTranslationFormat.cs
+++ b/src/Generated/Models/Audio/AudioTranslationFormat.cs
@@ -30,6 +30,8 @@ public AudioTranslationFormat(string value)
 
         public static implicit operator AudioTranslationFormat(string value) => new AudioTranslationFormat(value);
 
+        public static implicit operator AudioTranslationFormat?(string value) => value == null ? null : new AudioTranslationFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is AudioTranslationFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Audio/GeneratedSpeechFormat.cs b/src/Generated/Models/Audio/GeneratedSpeechFormat.cs
index d1eebe036..0b6ae85c1 100644
--- a/src/Generated/Models/Audio/GeneratedSpeechFormat.cs
+++ b/src/Generated/Models/Audio/GeneratedSpeechFormat.cs
@@ -43,6 +43,8 @@ public GeneratedSpeechFormat(string value)
 
         public static implicit operator GeneratedSpeechFormat(string value) => new GeneratedSpeechFormat(value);
 
+        public static implicit operator GeneratedSpeechFormat?(string value) => value == null ? null : new GeneratedSpeechFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is GeneratedSpeechFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Audio/GeneratedSpeechVoice.cs b/src/Generated/Models/Audio/GeneratedSpeechVoice.cs
index 9a80196d1..4a6eff3ce 100644
--- a/src/Generated/Models/Audio/GeneratedSpeechVoice.cs
+++ b/src/Generated/Models/Audio/GeneratedSpeechVoice.cs
@@ -64,6 +64,8 @@ public GeneratedSpeechVoice(string value)
 
         public static implicit operator GeneratedSpeechVoice(string value) => new GeneratedSpeechVoice(value);
 
+        public static implicit operator GeneratedSpeechVoice?(string value) => value == null ? null : new GeneratedSpeechVoice(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is GeneratedSpeechVoice other && Equals(other);
 
diff --git a/src/Generated/Models/Audio/InternalCreateSpeechRequestModel.cs b/src/Generated/Models/Audio/InternalCreateSpeechRequestModel.cs
index 40f9eb852..5a2b6442e 100644
--- a/src/Generated/Models/Audio/InternalCreateSpeechRequestModel.cs
+++ b/src/Generated/Models/Audio/InternalCreateSpeechRequestModel.cs
@@ -34,6 +34,8 @@ public InternalCreateSpeechRequestModel(string value)
 
         public static implicit operator InternalCreateSpeechRequestModel(string value) => new InternalCreateSpeechRequestModel(value);
 
+        public static implicit operator InternalCreateSpeechRequestModel?(string value) => value == null ? null : new InternalCreateSpeechRequestModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateSpeechRequestModel other && Equals(other);
 
diff --git a/src/Generated/Models/Audio/InternalCreateTranscriptionRequestAccept.cs b/src/Generated/Models/Audio/InternalCreateTranscriptionRequestAccept.cs
index 2af628e07..c77a6b5a3 100644
--- a/src/Generated/Models/Audio/InternalCreateTranscriptionRequestAccept.cs
+++ b/src/Generated/Models/Audio/InternalCreateTranscriptionRequestAccept.cs
@@ -31,6 +31,8 @@ public InternalCreateTranscriptionRequestAccept(string value)
 
         public static implicit operator InternalCreateTranscriptionRequestAccept(string value) => new InternalCreateTranscriptionRequestAccept(value);
 
+        public static implicit operator InternalCreateTranscriptionRequestAccept?(string value) => value == null ? null : new InternalCreateTranscriptionRequestAccept(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateTranscriptionRequestAccept other && Equals(other);
 
diff --git a/src/Generated/Models/Audio/InternalCreateTranscriptionRequestModel.cs b/src/Generated/Models/Audio/InternalCreateTranscriptionRequestModel.cs
index 6751afaad..a5ccde37d 100644
--- a/src/Generated/Models/Audio/InternalCreateTranscriptionRequestModel.cs
+++ b/src/Generated/Models/Audio/InternalCreateTranscriptionRequestModel.cs
@@ -34,6 +34,8 @@ public InternalCreateTranscriptionRequestModel(string value)
 
         public static implicit operator InternalCreateTranscriptionRequestModel(string value) => new InternalCreateTranscriptionRequestModel(value);
 
+        public static implicit operator InternalCreateTranscriptionRequestModel?(string value) => value == null ? null : new InternalCreateTranscriptionRequestModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateTranscriptionRequestModel other && Equals(other);
 
diff --git a/src/Generated/Models/Audio/InternalCreateTranscriptionRequestTimestampGranularities.cs b/src/Generated/Models/Audio/InternalCreateTranscriptionRequestTimestampGranularities.cs
index 002fbdd7a..c0c86d759 100644
--- a/src/Generated/Models/Audio/InternalCreateTranscriptionRequestTimestampGranularities.cs
+++ b/src/Generated/Models/Audio/InternalCreateTranscriptionRequestTimestampGranularities.cs
@@ -31,6 +31,8 @@ public InternalCreateTranscriptionRequestTimestampGranularities(string value)
 
         public static implicit operator InternalCreateTranscriptionRequestTimestampGranularities(string value) => new InternalCreateTranscriptionRequestTimestampGranularities(value);
 
+        public static implicit operator InternalCreateTranscriptionRequestTimestampGranularities?(string value) => value == null ? null : new InternalCreateTranscriptionRequestTimestampGranularities(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateTranscriptionRequestTimestampGranularities other && Equals(other);
 
diff --git a/src/Generated/Models/Audio/InternalCreateTranslationRequestModel.cs b/src/Generated/Models/Audio/InternalCreateTranslationRequestModel.cs
index c44d1bbbf..4168c421c 100644
--- a/src/Generated/Models/Audio/InternalCreateTranslationRequestModel.cs
+++ b/src/Generated/Models/Audio/InternalCreateTranslationRequestModel.cs
@@ -28,6 +28,8 @@ public InternalCreateTranslationRequestModel(string value)
 
         public static implicit operator InternalCreateTranslationRequestModel(string value) => new InternalCreateTranslationRequestModel(value);
 
+        public static implicit operator InternalCreateTranslationRequestModel?(string value) => value == null ? null : new InternalCreateTranslationRequestModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateTranslationRequestModel other && Equals(other);
 
diff --git a/src/Generated/Models/Audio/InternalTranscriptionInclude.cs b/src/Generated/Models/Audio/InternalTranscriptionInclude.cs
index 15cbe8562..2535af909 100644
--- a/src/Generated/Models/Audio/InternalTranscriptionInclude.cs
+++ b/src/Generated/Models/Audio/InternalTranscriptionInclude.cs
@@ -28,6 +28,8 @@ public InternalTranscriptionInclude(string value)
 
         public static implicit operator InternalTranscriptionInclude(string value) => new InternalTranscriptionInclude(value);
 
+        public static implicit operator InternalTranscriptionInclude?(string value) => value == null ? null : new InternalTranscriptionInclude(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalTranscriptionInclude other && Equals(other);
 
diff --git a/src/Generated/Models/Audio/StreamingAudioTranscriptionUpdateKind.cs b/src/Generated/Models/Audio/StreamingAudioTranscriptionUpdateKind.cs
index 99c4d4c77..10dd578f6 100644
--- a/src/Generated/Models/Audio/StreamingAudioTranscriptionUpdateKind.cs
+++ b/src/Generated/Models/Audio/StreamingAudioTranscriptionUpdateKind.cs
@@ -33,6 +33,8 @@ public StreamingAudioTranscriptionUpdateKind(string value)
 
         public static implicit operator StreamingAudioTranscriptionUpdateKind(string value) => new StreamingAudioTranscriptionUpdateKind(value);
 
+        public static implicit operator StreamingAudioTranscriptionUpdateKind?(string value) => value == null ? null : new StreamingAudioTranscriptionUpdateKind(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is StreamingAudioTranscriptionUpdateKind other && Equals(other);
 
diff --git a/src/Generated/Models/Batch/InternalBatchStatus.cs b/src/Generated/Models/Batch/InternalBatchStatus.cs
index 3edeb43ce..a245918df 100644
--- a/src/Generated/Models/Batch/InternalBatchStatus.cs
+++ b/src/Generated/Models/Batch/InternalBatchStatus.cs
@@ -49,6 +49,8 @@ public InternalBatchStatus(string value)
 
         public static implicit operator InternalBatchStatus(string value) => new InternalBatchStatus(value);
 
+        public static implicit operator InternalBatchStatus?(string value) => value == null ? null : new InternalBatchStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalBatchStatus other && Equals(other);
 
diff --git a/src/Generated/Models/Batch/InternalCreateBatchRequestEndpoint.cs b/src/Generated/Models/Batch/InternalCreateBatchRequestEndpoint.cs
index 186a89103..068d9c173 100644
--- a/src/Generated/Models/Batch/InternalCreateBatchRequestEndpoint.cs
+++ b/src/Generated/Models/Batch/InternalCreateBatchRequestEndpoint.cs
@@ -31,6 +31,8 @@ public InternalCreateBatchRequestEndpoint(string value)
 
         public static implicit operator InternalCreateBatchRequestEndpoint(string value) => new InternalCreateBatchRequestEndpoint(value);
 
+        public static implicit operator InternalCreateBatchRequestEndpoint?(string value) => value == null ? null : new InternalCreateBatchRequestEndpoint(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateBatchRequestEndpoint other && Equals(other);
 
diff --git a/src/Generated/Models/Chat/ChatCompletionCollectionOrder.cs b/src/Generated/Models/Chat/ChatCompletionCollectionOrder.cs
index 414bb39bb..1f43a98b6 100644
--- a/src/Generated/Models/Chat/ChatCompletionCollectionOrder.cs
+++ b/src/Generated/Models/Chat/ChatCompletionCollectionOrder.cs
@@ -33,6 +33,8 @@ public ChatCompletionCollectionOrder(string value)
 
         public static implicit operator ChatCompletionCollectionOrder(string value) => new ChatCompletionCollectionOrder(value);
 
+        public static implicit operator ChatCompletionCollectionOrder?(string value) => value == null ? null : new ChatCompletionCollectionOrder(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ChatCompletionCollectionOrder other && Equals(other);
 
diff --git a/src/Generated/Models/Chat/ChatCompletionMessageCollectionOrder.cs b/src/Generated/Models/Chat/ChatCompletionMessageCollectionOrder.cs
index 84dec8b0a..67e4d5851 100644
--- a/src/Generated/Models/Chat/ChatCompletionMessageCollectionOrder.cs
+++ b/src/Generated/Models/Chat/ChatCompletionMessageCollectionOrder.cs
@@ -33,6 +33,8 @@ public ChatCompletionMessageCollectionOrder(string value)
 
         public static implicit operator ChatCompletionMessageCollectionOrder(string value) => new ChatCompletionMessageCollectionOrder(value);
 
+        public static implicit operator ChatCompletionMessageCollectionOrder?(string value) => value == null ? null : new ChatCompletionMessageCollectionOrder(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ChatCompletionMessageCollectionOrder other && Equals(other);
 
diff --git a/src/Generated/Models/Chat/ChatImageDetailLevel.cs b/src/Generated/Models/Chat/ChatImageDetailLevel.cs
index 485f3a13d..94b204dc2 100644
--- a/src/Generated/Models/Chat/ChatImageDetailLevel.cs
+++ b/src/Generated/Models/Chat/ChatImageDetailLevel.cs
@@ -34,6 +34,8 @@ public ChatImageDetailLevel(string value)
 
         public static implicit operator ChatImageDetailLevel(string value) => new ChatImageDetailLevel(value);
 
+        public static implicit operator ChatImageDetailLevel?(string value) => value == null ? null : new ChatImageDetailLevel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ChatImageDetailLevel other && Equals(other);
 
diff --git a/src/Generated/Models/Chat/ChatInputAudioFormat.cs b/src/Generated/Models/Chat/ChatInputAudioFormat.cs
index 350fa3b75..d7d62fba8 100644
--- a/src/Generated/Models/Chat/ChatInputAudioFormat.cs
+++ b/src/Generated/Models/Chat/ChatInputAudioFormat.cs
@@ -33,6 +33,8 @@ public ChatInputAudioFormat(string value)
 
         public static implicit operator ChatInputAudioFormat(string value) => new ChatInputAudioFormat(value);
 
+        public static implicit operator ChatInputAudioFormat?(string value) => value == null ? null : new ChatInputAudioFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ChatInputAudioFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Chat/ChatOutputAudioFormat.cs b/src/Generated/Models/Chat/ChatOutputAudioFormat.cs
index b48619dac..4be3cf1e7 100644
--- a/src/Generated/Models/Chat/ChatOutputAudioFormat.cs
+++ b/src/Generated/Models/Chat/ChatOutputAudioFormat.cs
@@ -45,6 +45,8 @@ public ChatOutputAudioFormat(string value)
 
         public static implicit operator ChatOutputAudioFormat(string value) => new ChatOutputAudioFormat(value);
 
+        public static implicit operator ChatOutputAudioFormat?(string value) => value == null ? null : new ChatOutputAudioFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ChatOutputAudioFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Chat/ChatOutputAudioVoice.cs b/src/Generated/Models/Chat/ChatOutputAudioVoice.cs
index 818bdbb4f..06521148c 100644
--- a/src/Generated/Models/Chat/ChatOutputAudioVoice.cs
+++ b/src/Generated/Models/Chat/ChatOutputAudioVoice.cs
@@ -60,6 +60,8 @@ public ChatOutputAudioVoice(string value)
 
         public static implicit operator ChatOutputAudioVoice(string value) => new ChatOutputAudioVoice(value);
 
+        public static implicit operator ChatOutputAudioVoice?(string value) => value == null ? null : new ChatOutputAudioVoice(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ChatOutputAudioVoice other && Equals(other);
 
diff --git a/src/Generated/Models/Chat/ChatReasoningEffortLevel.cs b/src/Generated/Models/Chat/ChatReasoningEffortLevel.cs
index ff5fad88b..27653e2ff 100644
--- a/src/Generated/Models/Chat/ChatReasoningEffortLevel.cs
+++ b/src/Generated/Models/Chat/ChatReasoningEffortLevel.cs
@@ -36,6 +36,8 @@ public ChatReasoningEffortLevel(string value)
 
         public static implicit operator ChatReasoningEffortLevel(string value) => new ChatReasoningEffortLevel(value);
 
+        public static implicit operator ChatReasoningEffortLevel?(string value) => value == null ? null : new ChatReasoningEffortLevel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ChatReasoningEffortLevel other && Equals(other);
 
diff --git a/src/Generated/Models/Chat/InternalChatOutputPredictionKind.cs b/src/Generated/Models/Chat/InternalChatOutputPredictionKind.cs
index 27097ce95..8e78f1966 100644
--- a/src/Generated/Models/Chat/InternalChatOutputPredictionKind.cs
+++ b/src/Generated/Models/Chat/InternalChatOutputPredictionKind.cs
@@ -28,6 +28,8 @@ public InternalChatOutputPredictionKind(string value)
 
         public static implicit operator InternalChatOutputPredictionKind(string value) => new InternalChatOutputPredictionKind(value);
 
+        public static implicit operator InternalChatOutputPredictionKind?(string value) => value == null ? null : new InternalChatOutputPredictionKind(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalChatOutputPredictionKind other && Equals(other);
 
diff --git a/src/Generated/Models/Chat/InternalCreateChatCompletionRequestModality.cs b/src/Generated/Models/Chat/InternalCreateChatCompletionRequestModality.cs
index 794b07602..762f761c5 100644
--- a/src/Generated/Models/Chat/InternalCreateChatCompletionRequestModality.cs
+++ b/src/Generated/Models/Chat/InternalCreateChatCompletionRequestModality.cs
@@ -31,6 +31,8 @@ public InternalCreateChatCompletionRequestModality(string value)
 
         public static implicit operator InternalCreateChatCompletionRequestModality(string value) => new InternalCreateChatCompletionRequestModality(value);
 
+        public static implicit operator InternalCreateChatCompletionRequestModality?(string value) => value == null ? null : new InternalCreateChatCompletionRequestModality(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateChatCompletionRequestModality other && Equals(other);
 
diff --git a/src/Generated/Models/Chat/InternalCreateChatCompletionRequestToolChoice.cs b/src/Generated/Models/Chat/InternalCreateChatCompletionRequestToolChoice.cs
index 01244b631..3ea21055d 100644
--- a/src/Generated/Models/Chat/InternalCreateChatCompletionRequestToolChoice.cs
+++ b/src/Generated/Models/Chat/InternalCreateChatCompletionRequestToolChoice.cs
@@ -34,6 +34,8 @@ public InternalCreateChatCompletionRequestToolChoice(string value)
 
         public static implicit operator InternalCreateChatCompletionRequestToolChoice(string value) => new InternalCreateChatCompletionRequestToolChoice(value);
 
+        public static implicit operator InternalCreateChatCompletionRequestToolChoice?(string value) => value == null ? null : new InternalCreateChatCompletionRequestToolChoice(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateChatCompletionRequestToolChoice other && Equals(other);
 
diff --git a/src/Generated/Models/Chat/InternalCreateChatCompletionStreamResponseChoiceFinishReason.cs b/src/Generated/Models/Chat/InternalCreateChatCompletionStreamResponseChoiceFinishReason.cs
index 20bdd5a96..9d5790093 100644
--- a/src/Generated/Models/Chat/InternalCreateChatCompletionStreamResponseChoiceFinishReason.cs
+++ b/src/Generated/Models/Chat/InternalCreateChatCompletionStreamResponseChoiceFinishReason.cs
@@ -40,6 +40,8 @@ public InternalCreateChatCompletionStreamResponseChoiceFinishReason(string value
 
         public static implicit operator InternalCreateChatCompletionStreamResponseChoiceFinishReason(string value) => new InternalCreateChatCompletionStreamResponseChoiceFinishReason(value);
 
+        public static implicit operator InternalCreateChatCompletionStreamResponseChoiceFinishReason?(string value) => value == null ? null : new InternalCreateChatCompletionStreamResponseChoiceFinishReason(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateChatCompletionStreamResponseChoiceFinishReason other && Equals(other);
 
diff --git a/src/Generated/Models/Embeddings/InternalCreateEmbeddingRequestEncodingFormat.cs b/src/Generated/Models/Embeddings/InternalCreateEmbeddingRequestEncodingFormat.cs
index 8a92ad776..ae1221046 100644
--- a/src/Generated/Models/Embeddings/InternalCreateEmbeddingRequestEncodingFormat.cs
+++ b/src/Generated/Models/Embeddings/InternalCreateEmbeddingRequestEncodingFormat.cs
@@ -31,6 +31,8 @@ public InternalCreateEmbeddingRequestEncodingFormat(string value)
 
         public static implicit operator InternalCreateEmbeddingRequestEncodingFormat(string value) => new InternalCreateEmbeddingRequestEncodingFormat(value);
 
+        public static implicit operator InternalCreateEmbeddingRequestEncodingFormat?(string value) => value == null ? null : new InternalCreateEmbeddingRequestEncodingFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateEmbeddingRequestEncodingFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Embeddings/InternalCreateEmbeddingRequestModel.cs b/src/Generated/Models/Embeddings/InternalCreateEmbeddingRequestModel.cs
index 069aff175..1412fbec7 100644
--- a/src/Generated/Models/Embeddings/InternalCreateEmbeddingRequestModel.cs
+++ b/src/Generated/Models/Embeddings/InternalCreateEmbeddingRequestModel.cs
@@ -34,6 +34,8 @@ public InternalCreateEmbeddingRequestModel(string value)
 
         public static implicit operator InternalCreateEmbeddingRequestModel(string value) => new InternalCreateEmbeddingRequestModel(value);
 
+        public static implicit operator InternalCreateEmbeddingRequestModel?(string value) => value == null ? null : new InternalCreateEmbeddingRequestModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateEmbeddingRequestModel other && Equals(other);
 
diff --git a/src/Generated/Models/Evals/InternalEvalDataSourceConfigType.cs b/src/Generated/Models/Evals/InternalEvalDataSourceConfigType.cs
index 858e53240..0691a2e1a 100644
--- a/src/Generated/Models/Evals/InternalEvalDataSourceConfigType.cs
+++ b/src/Generated/Models/Evals/InternalEvalDataSourceConfigType.cs
@@ -34,6 +34,8 @@ public InternalEvalDataSourceConfigType(string value)
 
         public static implicit operator InternalEvalDataSourceConfigType(string value) => new InternalEvalDataSourceConfigType(value);
 
+        public static implicit operator InternalEvalDataSourceConfigType?(string value) => value == null ? null : new InternalEvalDataSourceConfigType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalEvalDataSourceConfigType other && Equals(other);
 
diff --git a/src/Generated/Models/Evals/InternalEvalItemContentType.cs b/src/Generated/Models/Evals/InternalEvalItemContentType.cs
index cce4e5854..51aadc3d5 100644
--- a/src/Generated/Models/Evals/InternalEvalItemContentType.cs
+++ b/src/Generated/Models/Evals/InternalEvalItemContentType.cs
@@ -31,6 +31,8 @@ public InternalEvalItemContentType(string value)
 
         public static implicit operator InternalEvalItemContentType(string value) => new InternalEvalItemContentType(value);
 
+        public static implicit operator InternalEvalItemContentType?(string value) => value == null ? null : new InternalEvalItemContentType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalEvalItemContentType other && Equals(other);
 
diff --git a/src/Generated/Models/Evals/InternalEvalItemRole.cs b/src/Generated/Models/Evals/InternalEvalItemRole.cs
index d722f0a28..725dd6453 100644
--- a/src/Generated/Models/Evals/InternalEvalItemRole.cs
+++ b/src/Generated/Models/Evals/InternalEvalItemRole.cs
@@ -37,6 +37,8 @@ public InternalEvalItemRole(string value)
 
         public static implicit operator InternalEvalItemRole(string value) => new InternalEvalItemRole(value);
 
+        public static implicit operator InternalEvalItemRole?(string value) => value == null ? null : new InternalEvalItemRole(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalEvalItemRole other && Equals(other);
 
diff --git a/src/Generated/Models/Evals/InternalEvalRunDataContentSourceType.cs b/src/Generated/Models/Evals/InternalEvalRunDataContentSourceType.cs
index 124c43501..f01c6940e 100644
--- a/src/Generated/Models/Evals/InternalEvalRunDataContentSourceType.cs
+++ b/src/Generated/Models/Evals/InternalEvalRunDataContentSourceType.cs
@@ -37,6 +37,8 @@ public InternalEvalRunDataContentSourceType(string value)
 
         public static implicit operator InternalEvalRunDataContentSourceType(string value) => new InternalEvalRunDataContentSourceType(value);
 
+        public static implicit operator InternalEvalRunDataContentSourceType?(string value) => value == null ? null : new InternalEvalRunDataContentSourceType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalEvalRunDataContentSourceType other && Equals(other);
 
diff --git a/src/Generated/Models/Evals/InternalEvalRunDataSourceType.cs b/src/Generated/Models/Evals/InternalEvalRunDataSourceType.cs
index 5da9ab1a5..6f855c0cc 100644
--- a/src/Generated/Models/Evals/InternalEvalRunDataSourceType.cs
+++ b/src/Generated/Models/Evals/InternalEvalRunDataSourceType.cs
@@ -34,6 +34,8 @@ public InternalEvalRunDataSourceType(string value)
 
         public static implicit operator InternalEvalRunDataSourceType(string value) => new InternalEvalRunDataSourceType(value);
 
+        public static implicit operator InternalEvalRunDataSourceType?(string value) => value == null ? null : new InternalEvalRunDataSourceType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalEvalRunDataSourceType other && Equals(other);
 
diff --git a/src/Generated/Models/Evals/InternalGetEvalRunOutputItemsRequestStatus.cs b/src/Generated/Models/Evals/InternalGetEvalRunOutputItemsRequestStatus.cs
index 2c0a043e1..561251643 100644
--- a/src/Generated/Models/Evals/InternalGetEvalRunOutputItemsRequestStatus.cs
+++ b/src/Generated/Models/Evals/InternalGetEvalRunOutputItemsRequestStatus.cs
@@ -31,6 +31,8 @@ public InternalGetEvalRunOutputItemsRequestStatus(string value)
 
         public static implicit operator InternalGetEvalRunOutputItemsRequestStatus(string value) => new InternalGetEvalRunOutputItemsRequestStatus(value);
 
+        public static implicit operator InternalGetEvalRunOutputItemsRequestStatus?(string value) => value == null ? null : new InternalGetEvalRunOutputItemsRequestStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalGetEvalRunOutputItemsRequestStatus other && Equals(other);
 
diff --git a/src/Generated/Models/Evals/InternalGetEvalRunsRequestStatus.cs b/src/Generated/Models/Evals/InternalGetEvalRunsRequestStatus.cs
index 547277776..8ed9a2a78 100644
--- a/src/Generated/Models/Evals/InternalGetEvalRunsRequestStatus.cs
+++ b/src/Generated/Models/Evals/InternalGetEvalRunsRequestStatus.cs
@@ -40,6 +40,8 @@ public InternalGetEvalRunsRequestStatus(string value)
 
         public static implicit operator InternalGetEvalRunsRequestStatus(string value) => new InternalGetEvalRunsRequestStatus(value);
 
+        public static implicit operator InternalGetEvalRunsRequestStatus?(string value) => value == null ? null : new InternalGetEvalRunsRequestStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalGetEvalRunsRequestStatus other && Equals(other);
 
diff --git a/src/Generated/Models/Evals/InternalListEvalsRequestOrderBy.cs b/src/Generated/Models/Evals/InternalListEvalsRequestOrderBy.cs
index ef85b2528..4d21353ed 100644
--- a/src/Generated/Models/Evals/InternalListEvalsRequestOrderBy.cs
+++ b/src/Generated/Models/Evals/InternalListEvalsRequestOrderBy.cs
@@ -31,6 +31,8 @@ public InternalListEvalsRequestOrderBy(string value)
 
         public static implicit operator InternalListEvalsRequestOrderBy(string value) => new InternalListEvalsRequestOrderBy(value);
 
+        public static implicit operator InternalListEvalsRequestOrderBy?(string value) => value == null ? null : new InternalListEvalsRequestOrderBy(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalListEvalsRequestOrderBy other && Equals(other);
 
diff --git a/src/Generated/Models/Files/FileUploadPurpose.cs b/src/Generated/Models/Files/FileUploadPurpose.cs
index 505d9e74e..5da1b63a8 100644
--- a/src/Generated/Models/Files/FileUploadPurpose.cs
+++ b/src/Generated/Models/Files/FileUploadPurpose.cs
@@ -39,6 +39,8 @@ public FileUploadPurpose(string value)
 
         public static implicit operator FileUploadPurpose(string value) => new FileUploadPurpose(value);
 
+        public static implicit operator FileUploadPurpose?(string value) => value == null ? null : new FileUploadPurpose(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is FileUploadPurpose other && Equals(other);
 
diff --git a/src/Generated/Models/Files/InternalCreateUploadRequestPurpose.cs b/src/Generated/Models/Files/InternalCreateUploadRequestPurpose.cs
index af2acf0a2..e01900b26 100644
--- a/src/Generated/Models/Files/InternalCreateUploadRequestPurpose.cs
+++ b/src/Generated/Models/Files/InternalCreateUploadRequestPurpose.cs
@@ -37,6 +37,8 @@ public InternalCreateUploadRequestPurpose(string value)
 
         public static implicit operator InternalCreateUploadRequestPurpose(string value) => new InternalCreateUploadRequestPurpose(value);
 
+        public static implicit operator InternalCreateUploadRequestPurpose?(string value) => value == null ? null : new InternalCreateUploadRequestPurpose(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateUploadRequestPurpose other && Equals(other);
 
diff --git a/src/Generated/Models/Files/InternalUploadStatus.cs b/src/Generated/Models/Files/InternalUploadStatus.cs
index a34dc58cc..7f1f1c4ee 100644
--- a/src/Generated/Models/Files/InternalUploadStatus.cs
+++ b/src/Generated/Models/Files/InternalUploadStatus.cs
@@ -37,6 +37,8 @@ public InternalUploadStatus(string value)
 
         public static implicit operator InternalUploadStatus(string value) => new InternalUploadStatus(value);
 
+        public static implicit operator InternalUploadStatus?(string value) => value == null ? null : new InternalUploadStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalUploadStatus other && Equals(other);
 
diff --git a/src/Generated/Models/FineTuning/FineTuningJobEventKind.cs b/src/Generated/Models/FineTuning/FineTuningJobEventKind.cs
index abdc9231d..722d5cdec 100644
--- a/src/Generated/Models/FineTuning/FineTuningJobEventKind.cs
+++ b/src/Generated/Models/FineTuning/FineTuningJobEventKind.cs
@@ -33,6 +33,8 @@ public FineTuningJobEventKind(string value)
 
         public static implicit operator FineTuningJobEventKind(string value) => new FineTuningJobEventKind(value);
 
+        public static implicit operator FineTuningJobEventKind?(string value) => value == null ? null : new FineTuningJobEventKind(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is FineTuningJobEventKind other && Equals(other);
 
diff --git a/src/Generated/Models/FineTuning/FineTuningStatus.cs b/src/Generated/Models/FineTuning/FineTuningStatus.cs
index 59de5e938..af437823d 100644
--- a/src/Generated/Models/FineTuning/FineTuningStatus.cs
+++ b/src/Generated/Models/FineTuning/FineTuningStatus.cs
@@ -45,6 +45,8 @@ public FineTuningStatus(string value)
 
         public static implicit operator FineTuningStatus(string value) => new FineTuningStatus(value);
 
+        public static implicit operator FineTuningStatus?(string value) => value == null ? null : new FineTuningStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is FineTuningStatus other && Equals(other);
 
diff --git a/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersBatchSizeChoiceEnum.cs b/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersBatchSizeChoiceEnum.cs
index 363a0bafd..7d5f724a0 100644
--- a/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersBatchSizeChoiceEnum.cs
+++ b/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersBatchSizeChoiceEnum.cs
@@ -28,6 +28,8 @@ public InternalCreateFineTuningJobRequestHyperparametersBatchSizeChoiceEnum(stri
 
         public static implicit operator InternalCreateFineTuningJobRequestHyperparametersBatchSizeChoiceEnum(string value) => new InternalCreateFineTuningJobRequestHyperparametersBatchSizeChoiceEnum(value);
 
+        public static implicit operator InternalCreateFineTuningJobRequestHyperparametersBatchSizeChoiceEnum?(string value) => value == null ? null : new InternalCreateFineTuningJobRequestHyperparametersBatchSizeChoiceEnum(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateFineTuningJobRequestHyperparametersBatchSizeChoiceEnum other && Equals(other);
 
diff --git a/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersBetaChoiceEnum.cs b/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersBetaChoiceEnum.cs
index 06135d01f..92d700e2d 100644
--- a/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersBetaChoiceEnum.cs
+++ b/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersBetaChoiceEnum.cs
@@ -28,6 +28,8 @@ public InternalCreateFineTuningJobRequestHyperparametersBetaChoiceEnum(string va
 
         public static implicit operator InternalCreateFineTuningJobRequestHyperparametersBetaChoiceEnum(string value) => new InternalCreateFineTuningJobRequestHyperparametersBetaChoiceEnum(value);
 
+        public static implicit operator InternalCreateFineTuningJobRequestHyperparametersBetaChoiceEnum?(string value) => value == null ? null : new InternalCreateFineTuningJobRequestHyperparametersBetaChoiceEnum(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateFineTuningJobRequestHyperparametersBetaChoiceEnum other && Equals(other);
 
diff --git a/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersLearningRateMultiplierChoiceEnum.cs b/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersLearningRateMultiplierChoiceEnum.cs
index ba8593976..5100803cc 100644
--- a/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersLearningRateMultiplierChoiceEnum.cs
+++ b/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersLearningRateMultiplierChoiceEnum.cs
@@ -28,6 +28,8 @@ public InternalCreateFineTuningJobRequestHyperparametersLearningRateMultiplierCh
 
         public static implicit operator InternalCreateFineTuningJobRequestHyperparametersLearningRateMultiplierChoiceEnum(string value) => new InternalCreateFineTuningJobRequestHyperparametersLearningRateMultiplierChoiceEnum(value);
 
+        public static implicit operator InternalCreateFineTuningJobRequestHyperparametersLearningRateMultiplierChoiceEnum?(string value) => value == null ? null : new InternalCreateFineTuningJobRequestHyperparametersLearningRateMultiplierChoiceEnum(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateFineTuningJobRequestHyperparametersLearningRateMultiplierChoiceEnum other && Equals(other);
 
diff --git a/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersNEpochsChoiceEnum.cs b/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersNEpochsChoiceEnum.cs
index c7dfac647..45c6b322d 100644
--- a/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersNEpochsChoiceEnum.cs
+++ b/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestHyperparametersNEpochsChoiceEnum.cs
@@ -28,6 +28,8 @@ public InternalCreateFineTuningJobRequestHyperparametersNEpochsChoiceEnum(string
 
         public static implicit operator InternalCreateFineTuningJobRequestHyperparametersNEpochsChoiceEnum(string value) => new InternalCreateFineTuningJobRequestHyperparametersNEpochsChoiceEnum(value);
 
+        public static implicit operator InternalCreateFineTuningJobRequestHyperparametersNEpochsChoiceEnum?(string value) => value == null ? null : new InternalCreateFineTuningJobRequestHyperparametersNEpochsChoiceEnum(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateFineTuningJobRequestHyperparametersNEpochsChoiceEnum other && Equals(other);
 
diff --git a/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestIntegrationType.cs b/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestIntegrationType.cs
index 96cf8fd86..5d9551e33 100644
--- a/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestIntegrationType.cs
+++ b/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestIntegrationType.cs
@@ -28,6 +28,8 @@ public InternalCreateFineTuningJobRequestIntegrationType(string value)
 
         public static implicit operator InternalCreateFineTuningJobRequestIntegrationType(string value) => new InternalCreateFineTuningJobRequestIntegrationType(value);
 
+        public static implicit operator InternalCreateFineTuningJobRequestIntegrationType?(string value) => value == null ? null : new InternalCreateFineTuningJobRequestIntegrationType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateFineTuningJobRequestIntegrationType other && Equals(other);
 
diff --git a/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestModel.cs b/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestModel.cs
index e00077760..b836a6e6f 100644
--- a/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestModel.cs
+++ b/src/Generated/Models/FineTuning/InternalCreateFineTuningJobRequestModel.cs
@@ -37,6 +37,8 @@ public InternalCreateFineTuningJobRequestModel(string value)
 
         public static implicit operator InternalCreateFineTuningJobRequestModel(string value) => new InternalCreateFineTuningJobRequestModel(value);
 
+        public static implicit operator InternalCreateFineTuningJobRequestModel?(string value) => value == null ? null : new InternalCreateFineTuningJobRequestModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateFineTuningJobRequestModel other && Equals(other);
 
diff --git a/src/Generated/Models/FineTuning/InternalFineTuneChatCompletionRequestAssistantMessageWeight.cs b/src/Generated/Models/FineTuning/InternalFineTuneChatCompletionRequestAssistantMessageWeight.cs
index aa6ddd5cc..aae787060 100644
--- a/src/Generated/Models/FineTuning/InternalFineTuneChatCompletionRequestAssistantMessageWeight.cs
+++ b/src/Generated/Models/FineTuning/InternalFineTuneChatCompletionRequestAssistantMessageWeight.cs
@@ -31,6 +31,8 @@ public InternalFineTuneChatCompletionRequestAssistantMessageWeight(string value)
 
         public static implicit operator InternalFineTuneChatCompletionRequestAssistantMessageWeight(string value) => new InternalFineTuneChatCompletionRequestAssistantMessageWeight(value);
 
+        public static implicit operator InternalFineTuneChatCompletionRequestAssistantMessageWeight?(string value) => value == null ? null : new InternalFineTuneChatCompletionRequestAssistantMessageWeight(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalFineTuneChatCompletionRequestAssistantMessageWeight other && Equals(other);
 
diff --git a/src/Generated/Models/FineTuning/InternalFineTuneMethodType.cs b/src/Generated/Models/FineTuning/InternalFineTuneMethodType.cs
index 10aa2fdf4..ac56d23c5 100644
--- a/src/Generated/Models/FineTuning/InternalFineTuneMethodType.cs
+++ b/src/Generated/Models/FineTuning/InternalFineTuneMethodType.cs
@@ -34,6 +34,8 @@ public InternalFineTuneMethodType(string value)
 
         public static implicit operator InternalFineTuneMethodType(string value) => new InternalFineTuneMethodType(value);
 
+        public static implicit operator InternalFineTuneMethodType?(string value) => value == null ? null : new InternalFineTuneMethodType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalFineTuneMethodType other && Equals(other);
 
diff --git a/src/Generated/Models/FineTuning/InternalFineTuneReinforcementHyperparametersReasoningEffort.cs b/src/Generated/Models/FineTuning/InternalFineTuneReinforcementHyperparametersReasoningEffort.cs
index b9a75111e..c668255ec 100644
--- a/src/Generated/Models/FineTuning/InternalFineTuneReinforcementHyperparametersReasoningEffort.cs
+++ b/src/Generated/Models/FineTuning/InternalFineTuneReinforcementHyperparametersReasoningEffort.cs
@@ -37,6 +37,8 @@ public InternalFineTuneReinforcementHyperparametersReasoningEffort(string value)
 
         public static implicit operator InternalFineTuneReinforcementHyperparametersReasoningEffort(string value) => new InternalFineTuneReinforcementHyperparametersReasoningEffort(value);
 
+        public static implicit operator InternalFineTuneReinforcementHyperparametersReasoningEffort?(string value) => value == null ? null : new InternalFineTuneReinforcementHyperparametersReasoningEffort(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalFineTuneReinforcementHyperparametersReasoningEffort other && Equals(other);
 
diff --git a/src/Generated/Models/FineTuning/InternalFineTuningIntegrationType.cs b/src/Generated/Models/FineTuning/InternalFineTuningIntegrationType.cs
index 50bad24df..f2afc14cb 100644
--- a/src/Generated/Models/FineTuning/InternalFineTuningIntegrationType.cs
+++ b/src/Generated/Models/FineTuning/InternalFineTuningIntegrationType.cs
@@ -28,6 +28,8 @@ public InternalFineTuningIntegrationType(string value)
 
         public static implicit operator InternalFineTuningIntegrationType(string value) => new InternalFineTuningIntegrationType(value);
 
+        public static implicit operator InternalFineTuningIntegrationType?(string value) => value == null ? null : new InternalFineTuningIntegrationType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalFineTuningIntegrationType other && Equals(other);
 
diff --git a/src/Generated/Models/Graders/GraderStringCheckOperation.cs b/src/Generated/Models/Graders/GraderStringCheckOperation.cs
index b11b749da..8f9b9302a 100644
--- a/src/Generated/Models/Graders/GraderStringCheckOperation.cs
+++ b/src/Generated/Models/Graders/GraderStringCheckOperation.cs
@@ -39,6 +39,8 @@ public GraderStringCheckOperation(string value)
 
         public static implicit operator GraderStringCheckOperation(string value) => new GraderStringCheckOperation(value);
 
+        public static implicit operator GraderStringCheckOperation?(string value) => value == null ? null : new GraderStringCheckOperation(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is GraderStringCheckOperation other && Equals(other);
 
diff --git a/src/Generated/Models/Graders/GraderTextSimilarityEvaluationMetric.cs b/src/Generated/Models/Graders/GraderTextSimilarityEvaluationMetric.cs
index 76aaf398e..a5bc4c382 100644
--- a/src/Generated/Models/Graders/GraderTextSimilarityEvaluationMetric.cs
+++ b/src/Generated/Models/Graders/GraderTextSimilarityEvaluationMetric.cs
@@ -57,6 +57,8 @@ public GraderTextSimilarityEvaluationMetric(string value)
 
         public static implicit operator GraderTextSimilarityEvaluationMetric(string value) => new GraderTextSimilarityEvaluationMetric(value);
 
+        public static implicit operator GraderTextSimilarityEvaluationMetric?(string value) => value == null ? null : new GraderTextSimilarityEvaluationMetric(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is GraderTextSimilarityEvaluationMetric other && Equals(other);
 
diff --git a/src/Generated/Models/Graders/GraderType.cs b/src/Generated/Models/Graders/GraderType.cs
index 30f39fef6..65109d59d 100644
--- a/src/Generated/Models/Graders/GraderType.cs
+++ b/src/Generated/Models/Graders/GraderType.cs
@@ -45,6 +45,8 @@ public GraderType(string value)
 
         public static implicit operator GraderType(string value) => new GraderType(value);
 
+        public static implicit operator GraderType?(string value) => value == null ? null : new GraderType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is GraderType other && Equals(other);
 
diff --git a/src/Generated/Models/Images/GeneratedImageBackground.cs b/src/Generated/Models/Images/GeneratedImageBackground.cs
index 5cc89a256..6c5671e6a 100644
--- a/src/Generated/Models/Images/GeneratedImageBackground.cs
+++ b/src/Generated/Models/Images/GeneratedImageBackground.cs
@@ -36,6 +36,8 @@ public GeneratedImageBackground(string value)
 
         public static implicit operator GeneratedImageBackground(string value) => new GeneratedImageBackground(value);
 
+        public static implicit operator GeneratedImageBackground?(string value) => value == null ? null : new GeneratedImageBackground(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is GeneratedImageBackground other && Equals(other);
 
diff --git a/src/Generated/Models/Images/GeneratedImageFileFormat.cs b/src/Generated/Models/Images/GeneratedImageFileFormat.cs
index aeadc8d89..293c15e0f 100644
--- a/src/Generated/Models/Images/GeneratedImageFileFormat.cs
+++ b/src/Generated/Models/Images/GeneratedImageFileFormat.cs
@@ -36,6 +36,8 @@ public GeneratedImageFileFormat(string value)
 
         public static implicit operator GeneratedImageFileFormat(string value) => new GeneratedImageFileFormat(value);
 
+        public static implicit operator GeneratedImageFileFormat?(string value) => value == null ? null : new GeneratedImageFileFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is GeneratedImageFileFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Images/GeneratedImageFormat.cs b/src/Generated/Models/Images/GeneratedImageFormat.cs
index 51076da91..48d37e31f 100644
--- a/src/Generated/Models/Images/GeneratedImageFormat.cs
+++ b/src/Generated/Models/Images/GeneratedImageFormat.cs
@@ -27,6 +27,8 @@ public GeneratedImageFormat(string value)
 
         public static implicit operator GeneratedImageFormat(string value) => new GeneratedImageFormat(value);
 
+        public static implicit operator GeneratedImageFormat?(string value) => value == null ? null : new GeneratedImageFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is GeneratedImageFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Images/GeneratedImageModerationLevel.cs b/src/Generated/Models/Images/GeneratedImageModerationLevel.cs
index c55776921..073d63bfe 100644
--- a/src/Generated/Models/Images/GeneratedImageModerationLevel.cs
+++ b/src/Generated/Models/Images/GeneratedImageModerationLevel.cs
@@ -33,6 +33,8 @@ public GeneratedImageModerationLevel(string value)
 
         public static implicit operator GeneratedImageModerationLevel(string value) => new GeneratedImageModerationLevel(value);
 
+        public static implicit operator GeneratedImageModerationLevel?(string value) => value == null ? null : new GeneratedImageModerationLevel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is GeneratedImageModerationLevel other && Equals(other);
 
diff --git a/src/Generated/Models/Images/GeneratedImageQuality.cs b/src/Generated/Models/Images/GeneratedImageQuality.cs
index a3ff1687c..9f45c4a5b 100644
--- a/src/Generated/Models/Images/GeneratedImageQuality.cs
+++ b/src/Generated/Models/Images/GeneratedImageQuality.cs
@@ -43,6 +43,8 @@ public GeneratedImageQuality(string value)
 
         public static implicit operator GeneratedImageQuality(string value) => new GeneratedImageQuality(value);
 
+        public static implicit operator GeneratedImageQuality?(string value) => value == null ? null : new GeneratedImageQuality(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is GeneratedImageQuality other && Equals(other);
 
diff --git a/src/Generated/Models/Images/GeneratedImageStyle.cs b/src/Generated/Models/Images/GeneratedImageStyle.cs
index 1b16f5bc3..4c72a8849 100644
--- a/src/Generated/Models/Images/GeneratedImageStyle.cs
+++ b/src/Generated/Models/Images/GeneratedImageStyle.cs
@@ -31,6 +31,8 @@ public GeneratedImageStyle(string value)
 
         public static implicit operator GeneratedImageStyle(string value) => new GeneratedImageStyle(value);
 
+        public static implicit operator GeneratedImageStyle?(string value) => value == null ? null : new GeneratedImageStyle(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is GeneratedImageStyle other && Equals(other);
 
diff --git a/src/Generated/Models/Images/InternalCreateImageEditRequestBackground.cs b/src/Generated/Models/Images/InternalCreateImageEditRequestBackground.cs
index 8b153d05d..00bcd664d 100644
--- a/src/Generated/Models/Images/InternalCreateImageEditRequestBackground.cs
+++ b/src/Generated/Models/Images/InternalCreateImageEditRequestBackground.cs
@@ -34,6 +34,8 @@ public InternalCreateImageEditRequestBackground(string value)
 
         public static implicit operator InternalCreateImageEditRequestBackground(string value) => new InternalCreateImageEditRequestBackground(value);
 
+        public static implicit operator InternalCreateImageEditRequestBackground?(string value) => value == null ? null : new InternalCreateImageEditRequestBackground(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateImageEditRequestBackground other && Equals(other);
 
diff --git a/src/Generated/Models/Images/InternalCreateImageEditRequestModel.cs b/src/Generated/Models/Images/InternalCreateImageEditRequestModel.cs
index de8d17afe..31b68a63c 100644
--- a/src/Generated/Models/Images/InternalCreateImageEditRequestModel.cs
+++ b/src/Generated/Models/Images/InternalCreateImageEditRequestModel.cs
@@ -31,6 +31,8 @@ public InternalCreateImageEditRequestModel(string value)
 
         public static implicit operator InternalCreateImageEditRequestModel(string value) => new InternalCreateImageEditRequestModel(value);
 
+        public static implicit operator InternalCreateImageEditRequestModel?(string value) => value == null ? null : new InternalCreateImageEditRequestModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateImageEditRequestModel other && Equals(other);
 
diff --git a/src/Generated/Models/Images/InternalCreateImageEditRequestQuality.cs b/src/Generated/Models/Images/InternalCreateImageEditRequestQuality.cs
index 29096f687..d4459857d 100644
--- a/src/Generated/Models/Images/InternalCreateImageEditRequestQuality.cs
+++ b/src/Generated/Models/Images/InternalCreateImageEditRequestQuality.cs
@@ -40,6 +40,8 @@ public InternalCreateImageEditRequestQuality(string value)
 
         public static implicit operator InternalCreateImageEditRequestQuality(string value) => new InternalCreateImageEditRequestQuality(value);
 
+        public static implicit operator InternalCreateImageEditRequestQuality?(string value) => value == null ? null : new InternalCreateImageEditRequestQuality(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateImageEditRequestQuality other && Equals(other);
 
diff --git a/src/Generated/Models/Images/InternalCreateImageEditRequestResponseFormat.cs b/src/Generated/Models/Images/InternalCreateImageEditRequestResponseFormat.cs
index 45be860fb..5650984c3 100644
--- a/src/Generated/Models/Images/InternalCreateImageEditRequestResponseFormat.cs
+++ b/src/Generated/Models/Images/InternalCreateImageEditRequestResponseFormat.cs
@@ -31,6 +31,8 @@ public InternalCreateImageEditRequestResponseFormat(string value)
 
         public static implicit operator InternalCreateImageEditRequestResponseFormat(string value) => new InternalCreateImageEditRequestResponseFormat(value);
 
+        public static implicit operator InternalCreateImageEditRequestResponseFormat?(string value) => value == null ? null : new InternalCreateImageEditRequestResponseFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateImageEditRequestResponseFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Images/InternalCreateImageEditRequestSize.cs b/src/Generated/Models/Images/InternalCreateImageEditRequestSize.cs
index b8b4a511d..cada2600a 100644
--- a/src/Generated/Models/Images/InternalCreateImageEditRequestSize.cs
+++ b/src/Generated/Models/Images/InternalCreateImageEditRequestSize.cs
@@ -43,6 +43,8 @@ public InternalCreateImageEditRequestSize(string value)
 
         public static implicit operator InternalCreateImageEditRequestSize(string value) => new InternalCreateImageEditRequestSize(value);
 
+        public static implicit operator InternalCreateImageEditRequestSize?(string value) => value == null ? null : new InternalCreateImageEditRequestSize(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateImageEditRequestSize other && Equals(other);
 
diff --git a/src/Generated/Models/Images/InternalCreateImageRequestModel.cs b/src/Generated/Models/Images/InternalCreateImageRequestModel.cs
index 03e4b723c..570816e6f 100644
--- a/src/Generated/Models/Images/InternalCreateImageRequestModel.cs
+++ b/src/Generated/Models/Images/InternalCreateImageRequestModel.cs
@@ -34,6 +34,8 @@ public InternalCreateImageRequestModel(string value)
 
         public static implicit operator InternalCreateImageRequestModel(string value) => new InternalCreateImageRequestModel(value);
 
+        public static implicit operator InternalCreateImageRequestModel?(string value) => value == null ? null : new InternalCreateImageRequestModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateImageRequestModel other && Equals(other);
 
diff --git a/src/Generated/Models/Images/InternalCreateImageVariationRequestModel.cs b/src/Generated/Models/Images/InternalCreateImageVariationRequestModel.cs
index 1943637c6..6881b4baf 100644
--- a/src/Generated/Models/Images/InternalCreateImageVariationRequestModel.cs
+++ b/src/Generated/Models/Images/InternalCreateImageVariationRequestModel.cs
@@ -28,6 +28,8 @@ public InternalCreateImageVariationRequestModel(string value)
 
         public static implicit operator InternalCreateImageVariationRequestModel(string value) => new InternalCreateImageVariationRequestModel(value);
 
+        public static implicit operator InternalCreateImageVariationRequestModel?(string value) => value == null ? null : new InternalCreateImageVariationRequestModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateImageVariationRequestModel other && Equals(other);
 
diff --git a/src/Generated/Models/Images/InternalCreateImageVariationRequestResponseFormat.cs b/src/Generated/Models/Images/InternalCreateImageVariationRequestResponseFormat.cs
index 49e0f1700..81c23ec2c 100644
--- a/src/Generated/Models/Images/InternalCreateImageVariationRequestResponseFormat.cs
+++ b/src/Generated/Models/Images/InternalCreateImageVariationRequestResponseFormat.cs
@@ -31,6 +31,8 @@ public InternalCreateImageVariationRequestResponseFormat(string value)
 
         public static implicit operator InternalCreateImageVariationRequestResponseFormat(string value) => new InternalCreateImageVariationRequestResponseFormat(value);
 
+        public static implicit operator InternalCreateImageVariationRequestResponseFormat?(string value) => value == null ? null : new InternalCreateImageVariationRequestResponseFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateImageVariationRequestResponseFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Images/InternalCreateImageVariationRequestSize.cs b/src/Generated/Models/Images/InternalCreateImageVariationRequestSize.cs
index 54362a93d..7b965c05d 100644
--- a/src/Generated/Models/Images/InternalCreateImageVariationRequestSize.cs
+++ b/src/Generated/Models/Images/InternalCreateImageVariationRequestSize.cs
@@ -34,6 +34,8 @@ public InternalCreateImageVariationRequestSize(string value)
 
         public static implicit operator InternalCreateImageVariationRequestSize(string value) => new InternalCreateImageVariationRequestSize(value);
 
+        public static implicit operator InternalCreateImageVariationRequestSize?(string value) => value == null ? null : new InternalCreateImageVariationRequestSize(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateImageVariationRequestSize other && Equals(other);
 
diff --git a/src/Generated/Models/Internal/InternalModelIdsShared.cs b/src/Generated/Models/Internal/InternalModelIdsShared.cs
index 630873289..b7c24f2b2 100644
--- a/src/Generated/Models/Internal/InternalModelIdsShared.cs
+++ b/src/Generated/Models/Internal/InternalModelIdsShared.cs
@@ -190,6 +190,8 @@ public InternalModelIdsShared(string value)
 
         public static implicit operator InternalModelIdsShared(string value) => new InternalModelIdsShared(value);
 
+        public static implicit operator InternalModelIdsShared?(string value) => value == null ? null : new InternalModelIdsShared(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalModelIdsShared other && Equals(other);
 
diff --git a/src/Generated/Models/Internal/InternalResponseFormatType.cs b/src/Generated/Models/Internal/InternalResponseFormatType.cs
index b998e0695..a0cea6dd5 100644
--- a/src/Generated/Models/Internal/InternalResponseFormatType.cs
+++ b/src/Generated/Models/Internal/InternalResponseFormatType.cs
@@ -34,6 +34,8 @@ public InternalResponseFormatType(string value)
 
         public static implicit operator InternalResponseFormatType(string value) => new InternalResponseFormatType(value);
 
+        public static implicit operator InternalResponseFormatType?(string value) => value == null ? null : new InternalResponseFormatType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalResponseFormatType other && Equals(other);
 
diff --git a/src/Generated/Models/Internal/InternalServiceTier.cs b/src/Generated/Models/Internal/InternalServiceTier.cs
index aaa2faf49..b4921faef 100644
--- a/src/Generated/Models/Internal/InternalServiceTier.cs
+++ b/src/Generated/Models/Internal/InternalServiceTier.cs
@@ -37,6 +37,8 @@ public InternalServiceTier(string value)
 
         public static implicit operator InternalServiceTier(string value) => new InternalServiceTier(value);
 
+        public static implicit operator InternalServiceTier?(string value) => value == null ? null : new InternalServiceTier(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalServiceTier other && Equals(other);
 
diff --git a/src/Generated/Models/Internal/InternalVoiceIdsShared.cs b/src/Generated/Models/Internal/InternalVoiceIdsShared.cs
index dcc690c27..95b6f9252 100644
--- a/src/Generated/Models/Internal/InternalVoiceIdsShared.cs
+++ b/src/Generated/Models/Internal/InternalVoiceIdsShared.cs
@@ -58,6 +58,8 @@ public InternalVoiceIdsShared(string value)
 
         public static implicit operator InternalVoiceIdsShared(string value) => new InternalVoiceIdsShared(value);
 
+        public static implicit operator InternalVoiceIdsShared?(string value) => value == null ? null : new InternalVoiceIdsShared(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalVoiceIdsShared other && Equals(other);
 
diff --git a/src/Generated/Models/Internal/InternalWebSearchContextSize.cs b/src/Generated/Models/Internal/InternalWebSearchContextSize.cs
index b56b31fdd..1bf58b98b 100644
--- a/src/Generated/Models/Internal/InternalWebSearchContextSize.cs
+++ b/src/Generated/Models/Internal/InternalWebSearchContextSize.cs
@@ -34,6 +34,8 @@ public InternalWebSearchContextSize(string value)
 
         public static implicit operator InternalWebSearchContextSize(string value) => new InternalWebSearchContextSize(value);
 
+        public static implicit operator InternalWebSearchContextSize?(string value) => value == null ? null : new InternalWebSearchContextSize(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalWebSearchContextSize other && Equals(other);
 
diff --git a/src/Generated/Models/LegacyCompletions/InternalCreateCompletionRequestModel.cs b/src/Generated/Models/LegacyCompletions/InternalCreateCompletionRequestModel.cs
index 51bc2950a..cceec977b 100644
--- a/src/Generated/Models/LegacyCompletions/InternalCreateCompletionRequestModel.cs
+++ b/src/Generated/Models/LegacyCompletions/InternalCreateCompletionRequestModel.cs
@@ -34,6 +34,8 @@ public InternalCreateCompletionRequestModel(string value)
 
         public static implicit operator InternalCreateCompletionRequestModel(string value) => new InternalCreateCompletionRequestModel(value);
 
+        public static implicit operator InternalCreateCompletionRequestModel?(string value) => value == null ? null : new InternalCreateCompletionRequestModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateCompletionRequestModel other && Equals(other);
 
diff --git a/src/Generated/Models/LegacyCompletions/InternalCreateCompletionResponseChoiceFinishReason.cs b/src/Generated/Models/LegacyCompletions/InternalCreateCompletionResponseChoiceFinishReason.cs
index f94c8ed51..69013e210 100644
--- a/src/Generated/Models/LegacyCompletions/InternalCreateCompletionResponseChoiceFinishReason.cs
+++ b/src/Generated/Models/LegacyCompletions/InternalCreateCompletionResponseChoiceFinishReason.cs
@@ -34,6 +34,8 @@ public InternalCreateCompletionResponseChoiceFinishReason(string value)
 
         public static implicit operator InternalCreateCompletionResponseChoiceFinishReason(string value) => new InternalCreateCompletionResponseChoiceFinishReason(value);
 
+        public static implicit operator InternalCreateCompletionResponseChoiceFinishReason?(string value) => value == null ? null : new InternalCreateCompletionResponseChoiceFinishReason(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateCompletionResponseChoiceFinishReason other && Equals(other);
 
diff --git a/src/Generated/Models/Moderations/InternalCreateModerationRequestModel.cs b/src/Generated/Models/Moderations/InternalCreateModerationRequestModel.cs
index 954a0f977..e5d3cf650 100644
--- a/src/Generated/Models/Moderations/InternalCreateModerationRequestModel.cs
+++ b/src/Generated/Models/Moderations/InternalCreateModerationRequestModel.cs
@@ -37,6 +37,8 @@ public InternalCreateModerationRequestModel(string value)
 
         public static implicit operator InternalCreateModerationRequestModel(string value) => new InternalCreateModerationRequestModel(value);
 
+        public static implicit operator InternalCreateModerationRequestModel?(string value) => value == null ? null : new InternalCreateModerationRequestModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCreateModerationRequestModel other && Equals(other);
 
diff --git a/src/Generated/Models/OpenAIContext.cs b/src/Generated/Models/OpenAIContext.cs
index beacae960..c789fa530 100644
--- a/src/Generated/Models/OpenAIContext.cs
+++ b/src/Generated/Models/OpenAIContext.cs
@@ -3,9 +3,806 @@
 #nullable disable
 
 using System.ClientModel.Primitives;
+using OpenAI.Assistants;
+using OpenAI.Audio;
+using OpenAI.Batch;
+using OpenAI.Chat;
+using OpenAI.Containers;
+using OpenAI.Embeddings;
+using OpenAI.Evals;
+using OpenAI.Files;
+using OpenAI.FineTuning;
+using OpenAI.Graders;
+using OpenAI.Images;
+using OpenAI.Internal;
+using OpenAI.LegacyCompletions;
+using OpenAI.Models;
+using OpenAI.Moderations;
+using OpenAI.Realtime;
+using OpenAI.Responses;
+using OpenAI.VectorStores;
 
 namespace OpenAI
 {
+    [ModelReaderWriterBuildable(typeof(InternalListAssistantsResponse))]
+    [ModelReaderWriterBuildable(typeof(Assistant))]
+    [ModelReaderWriterBuildable(typeof(ToolDefinition))]
+    [ModelReaderWriterBuildable(typeof(ToolResources))]
+    [ModelReaderWriterBuildable(typeof(UnknownAssistantToolDefinition))]
+    [ModelReaderWriterBuildable(typeof(CodeInterpreterToolDefinition))]
+    [ModelReaderWriterBuildable(typeof(FileSearchToolDefinition))]
+    [ModelReaderWriterBuildable(typeof(InternalAssistantToolsFileSearchFileSearch))]
+    [ModelReaderWriterBuildable(typeof(FileSearchRankingOptions))]
+    [ModelReaderWriterBuildable(typeof(FunctionToolDefinition))]
+    [ModelReaderWriterBuildable(typeof(InternalFunctionDefinition))]
+    [ModelReaderWriterBuildable(typeof(CodeInterpreterToolResources))]
+    [ModelReaderWriterBuildable(typeof(InternalToolResourcesFileSearchIdsOnly))]
+    [ModelReaderWriterBuildable(typeof(InternalResponseFormatText))]
+    [ModelReaderWriterBuildable(typeof(InternalResponseFormat))]
+    [ModelReaderWriterBuildable(typeof(InternalUnknownResponseFormat))]
+    [ModelReaderWriterBuildable(typeof(InternalResponseFormatJsonObject))]
+    [ModelReaderWriterBuildable(typeof(InternalResponseFormatJsonSchema))]
+    [ModelReaderWriterBuildable(typeof(InternalResponseFormatJsonSchemaJsonSchema))]
+    [ModelReaderWriterBuildable(typeof(InternalResponseFormatJsonSchemaSchema))]
+    [ModelReaderWriterBuildable(typeof(OpenAIErrorResponse))]
+    [ModelReaderWriterBuildable(typeof(OpenAIError))]
+    [ModelReaderWriterBuildable(typeof(AssistantCreationOptions))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateAssistantRequestToolResources))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateAssistantRequestToolResourcesCodeInterpreter))]
+    [ModelReaderWriterBuildable(typeof(FileSearchToolResources))]
+    [ModelReaderWriterBuildable(typeof(VectorStoreCreationHelper))]
+    [ModelReaderWriterBuildable(typeof(InternalChunkingStrategyRequestParam))]
+    [ModelReaderWriterBuildable(typeof(InternalUnknownChunkingStrategyRequestParamProxy))]
+    [ModelReaderWriterBuildable(typeof(InternalAutoChunkingStrategyRequestParam))]
+    [ModelReaderWriterBuildable(typeof(InternalStaticChunkingStrategyRequestParam))]
+    [ModelReaderWriterBuildable(typeof(InternalStaticChunkingStrategy))]
+    [ModelReaderWriterBuildable(typeof(AssistantModificationOptions))]
+    [ModelReaderWriterBuildable(typeof(InternalModifyAssistantRequestToolResources))]
+    [ModelReaderWriterBuildable(typeof(InternalModifyAssistantRequestToolResourcesCodeInterpreter))]
+    [ModelReaderWriterBuildable(typeof(AssistantDeletionResult))]
+    [ModelReaderWriterBuildable(typeof(SpeechGenerationOptions))]
+    [ModelReaderWriterBuildable(typeof(AudioTranscriptionOptions))]
+    [ModelReaderWriterBuildable(typeof(InternalVadConfig))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateTranscriptionResponseVerboseJson))]
+    [ModelReaderWriterBuildable(typeof(TranscribedWord))]
+    [ModelReaderWriterBuildable(typeof(TranscribedSegment))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateTranscriptionResponseJson))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateTranscriptionResponseJsonLogprob))]
+    [ModelReaderWriterBuildable(typeof(StreamingAudioTranscriptionUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalUnknownCreateTranscriptionResponseStreamEvent))]
+    [ModelReaderWriterBuildable(typeof(StreamingAudioTranscriptionTextDeltaUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalTranscriptTextDeltaEventLogprob))]
+    [ModelReaderWriterBuildable(typeof(StreamingAudioTranscriptionTextDoneUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalTranscriptTextDoneEventLogprob))]
+    [ModelReaderWriterBuildable(typeof(AudioTranslationOptions))]
+    [ModelReaderWriterBuildable(typeof(AudioTranslation))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateTranslationResponseJson))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateBatchRequest))]
+    [ModelReaderWriterBuildable(typeof(InternalBatchJob))]
+    [ModelReaderWriterBuildable(typeof(InternalBatchErrors))]
+    [ModelReaderWriterBuildable(typeof(InternalBatchError))]
+    [ModelReaderWriterBuildable(typeof(InternalBatchRequestCounts))]
+    [ModelReaderWriterBuildable(typeof(InternalListBatchesResponse))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionList))]
+    [ModelReaderWriterBuildable(typeof(ChatCompletion))]
+    [ModelReaderWriterBuildable(typeof(ChatTokenUsage))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateChatCompletionResponseChoice))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionResponseMessage))]
+    [ModelReaderWriterBuildable(typeof(ChatToolCall))]
+    [ModelReaderWriterBuildable(typeof(ChatMessageAnnotation))]
+    [ModelReaderWriterBuildable(typeof(ChatOutputAudio))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateChatCompletionResponseChoiceLogprobs))]
+    [ModelReaderWriterBuildable(typeof(ChatTokenLogProbabilityDetails))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionMessageToolCallFunction))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionResponseMessageAnnotationUrlCitation))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionResponseMessageFunctionCall))]
+    [ModelReaderWriterBuildable(typeof(ChatTokenTopLogProbabilityDetails))]
+    [ModelReaderWriterBuildable(typeof(ChatOutputTokenUsageDetails))]
+    [ModelReaderWriterBuildable(typeof(ChatInputTokenUsageDetails))]
+    [ModelReaderWriterBuildable(typeof(ChatCompletionOptions))]
+    [ModelReaderWriterBuildable(typeof(ChatWebSearchOptions))]
+    [ModelReaderWriterBuildable(typeof(ChatTool))]
+    [ModelReaderWriterBuildable(typeof(ChatMessage))]
+    [ModelReaderWriterBuildable(typeof(InternalUnknownChatMessage))]
+    [ModelReaderWriterBuildable(typeof(ChatMessageContentPart))]
+    [ModelReaderWriterBuildable(typeof(InternalUnknownChatCompletionRequestMessageContentPart))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionRequestMessageContentPartText))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionRequestMessageContentPartImage))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionRequestMessageContentPartImageImageUrl))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionRequestMessageContentPartRefusal))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionRequestMessageContentPartFile))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionRequestMessageContentPartFileFile))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionRequestMessageContentPartAudio))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionRequestMessageContentPartAudioInputAudio))]
+    [ModelReaderWriterBuildable(typeof(SystemChatMessage))]
+    [ModelReaderWriterBuildable(typeof(DeveloperChatMessage))]
+    [ModelReaderWriterBuildable(typeof(UserChatMessage))]
+    [ModelReaderWriterBuildable(typeof(AssistantChatMessage))]
+    [ModelReaderWriterBuildable(typeof(ChatOutputAudioReference))]
+    [ModelReaderWriterBuildable(typeof(ChatFunctionCall))]
+    [ModelReaderWriterBuildable(typeof(ToolChatMessage))]
+    [ModelReaderWriterBuildable(typeof(FunctionChatMessage))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateChatCompletionRequestWebSearchOptionsUserLocation1))]
+    [ModelReaderWriterBuildable(typeof(InternalWebSearchLocation))]
+    [ModelReaderWriterBuildable(typeof(ChatAudioOptions))]
+    [ModelReaderWriterBuildable(typeof(ChatOutputPrediction))]
+    [ModelReaderWriterBuildable(typeof(InternalUnknownChatOutputPrediction))]
+    [ModelReaderWriterBuildable(typeof(InternalChatOutputPredictionContent))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionStreamOptions))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionNamedToolChoice))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionNamedToolChoiceFunction))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionFunctionCallOption))]
+    [ModelReaderWriterBuildable(typeof(ChatFunction))]
+    [ModelReaderWriterBuildable(typeof(StreamingChatCompletionUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateChatCompletionStreamResponseChoice))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionStreamResponseDelta))]
+    [ModelReaderWriterBuildable(typeof(StreamingChatOutputAudioUpdate))]
+    [ModelReaderWriterBuildable(typeof(StreamingChatFunctionCallUpdate))]
+    [ModelReaderWriterBuildable(typeof(StreamingChatToolCallUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateChatCompletionStreamResponseChoiceLogprobs))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionMessageToolCallChunkFunction))]
+    [ModelReaderWriterBuildable(typeof(InternalUpdateChatCompletionRequest))]
+    [ModelReaderWriterBuildable(typeof(ChatCompletionDeletionResult))]
+    [ModelReaderWriterBuildable(typeof(InternalChatCompletionMessageList))]
+    [ModelReaderWriterBuildable(typeof(ChatCompletionMessageListDatum))]
+    [ModelReaderWriterBuildable(typeof(EmbeddingGenerationOptions))]
+    [ModelReaderWriterBuildable(typeof(OpenAIEmbeddingCollection))]
+    [ModelReaderWriterBuildable(typeof(EmbeddingTokenUsage))]
+    [ModelReaderWriterBuildable(typeof(OpenAIEmbedding))]
+    [ModelReaderWriterBuildable(typeof(OpenAIFileCollection))]
+    [ModelReaderWriterBuildable(typeof(OpenAIFile))]
+    [ModelReaderWriterBuildable(typeof(InternalFileUploadOptions))]
+    [ModelReaderWriterBuildable(typeof(FileDeletionResult))]
+    [ModelReaderWriterBuildable(typeof(InternalListFineTuningCheckpointPermissionResponse))]
+    [ModelReaderWriterBuildable(typeof(InternalFineTuningCheckpointPermission))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateFineTuningCheckpointPermissionRequest))]
+    [ModelReaderWriterBuildable(typeof(InternalDeleteFineTuningCheckpointPermissionResponse))]
+    [ModelReaderWriterBuildable(typeof(FineTuningOptions))]
+    [ModelReaderWriterBuildable(typeof(HyperparameterOptions))]
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+    [ModelReaderWriterBuildable(typeof(RunStepFileSearchResult))]
+    [ModelReaderWriterBuildable(typeof(RunStepFileSearchResultContent))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDetailsToolCallsFileSearchRankingOptionsObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDetailsToolCallsFunctionObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDetailsToolCallsFunctionObjectFunction))]
+    [ModelReaderWriterBuildable(typeof(AssistantThread))]
+    [ModelReaderWriterBuildable(typeof(InternalThreadObjectToolResources))]
+    [ModelReaderWriterBuildable(typeof(InternalThreadObjectToolResourcesCodeInterpreter))]
+    [ModelReaderWriterBuildable(typeof(InternalThreadObjectToolResourcesFileSearch))]
+    [ModelReaderWriterBuildable(typeof(ThreadModificationOptions))]
+    [ModelReaderWriterBuildable(typeof(InternalModifyThreadRequestToolResources))]
+    [ModelReaderWriterBuildable(typeof(InternalModifyThreadRequestToolResourcesCodeInterpreter))]
+    [ModelReaderWriterBuildable(typeof(ThreadDeletionResult))]
+    [ModelReaderWriterBuildable(typeof(InternalListVectorStoresResponse))]
+    [ModelReaderWriterBuildable(typeof(VectorStore))]
+    [ModelReaderWriterBuildable(typeof(VectorStoreFileCounts))]
+    [ModelReaderWriterBuildable(typeof(VectorStoreExpirationPolicy))]
+    [ModelReaderWriterBuildable(typeof(VectorStoreCreationOptions))]
+    [ModelReaderWriterBuildable(typeof(VectorStoreModificationOptions))]
+    [ModelReaderWriterBuildable(typeof(VectorStoreDeletionResult))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateVectorStoreFileBatchRequest))]
+    [ModelReaderWriterBuildable(typeof(VectorStoreBatchFileJob))]
+    [ModelReaderWriterBuildable(typeof(InternalVectorStoreFileBatchObjectFileCounts))]
+    [ModelReaderWriterBuildable(typeof(InternalListVectorStoreFilesResponse))]
+    [ModelReaderWriterBuildable(typeof(VectorStoreFileAssociation))]
+    [ModelReaderWriterBuildable(typeof(VectorStoreFileAssociationError))]
+    [ModelReaderWriterBuildable(typeof(InternalChunkingStrategyResponseParam))]
+    [ModelReaderWriterBuildable(typeof(InternalUnknownChunkingStrategyResponseParam))]
+    [ModelReaderWriterBuildable(typeof(InternalOtherChunkingStrategyResponseParam))]
+    [ModelReaderWriterBuildable(typeof(InternalStaticChunkingStrategyResponseParam))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateVectorStoreFileRequest))]
+    [ModelReaderWriterBuildable(typeof(FileFromStoreRemovalResult))]
+    [ModelReaderWriterBuildable(typeof(InternalUpdateVectorStoreFileAttributesRequest))]
+    [ModelReaderWriterBuildable(typeof(InternalVectorStoreFileContentResponse))]
+    [ModelReaderWriterBuildable(typeof(InternalVectorStoreFileContentResponseDatum))]
+    [ModelReaderWriterBuildable(typeof(InternalVectorStoreSearchRequestRankingOptions))]
+    [ModelReaderWriterBuildable(typeof(InternalVectorStoreSearchRequest))]
+    [ModelReaderWriterBuildable(typeof(InternalVectorStoreSearchResultsPage))]
+    [ModelReaderWriterBuildable(typeof(InternalVectorStoreSearchResultItem))]
+    [ModelReaderWriterBuildable(typeof(InternalVectorStoreSearchResultContentObject))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateCompletionRequest))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateCompletionResponse))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateCompletionResponseChoice))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateCompletionResponseChoiceLogprobs))]
+    [ModelReaderWriterBuildable(typeof(OpenAIModelCollection))]
+    [ModelReaderWriterBuildable(typeof(OpenAIModel))]
+    [ModelReaderWriterBuildable(typeof(ModelDeletionResult))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEvent))]
+    [ModelReaderWriterBuildable(typeof(UnknownRealtimeClientEvent))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEventSessionUpdate))]
+    [ModelReaderWriterBuildable(typeof(ConversationSessionOptions))]
+    [ModelReaderWriterBuildable(typeof(ConversationTool))]
+    [ModelReaderWriterBuildable(typeof(InputTranscriptionOptions))]
+    [ModelReaderWriterBuildable(typeof(TurnDetectionOptions))]
+    [ModelReaderWriterBuildable(typeof(UnknownRealtimeTurnDetection))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerVadTurnDetection))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSemanticVadTurnDetection))]
+    [ModelReaderWriterBuildable(typeof(InputNoiseReductionOptions))]
+    [ModelReaderWriterBuildable(typeof(InternalUnknownRealtimeAudioNoiseReduction))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeAudioNearFieldNoiseReduction))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeAudioFarFieldNoiseReduction))]
+    [ModelReaderWriterBuildable(typeof(UnknownRealtimeTool))]
+    [ModelReaderWriterBuildable(typeof(ConversationFunctionTool))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeToolChoiceObject))]
+    [ModelReaderWriterBuildable(typeof(UnknownRealtimeToolChoiceObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeToolChoiceFunctionObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeToolChoiceFunctionObjectFunction))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEventInputAudioBufferAppend))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEventInputAudioBufferCommit))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEventInputAudioBufferClear))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEventOutputAudioBufferClear))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEventConversationItemCreate))]
+    [ModelReaderWriterBuildable(typeof(RealtimeItem))]
+    [ModelReaderWriterBuildable(typeof(UnknownRealtimeRequestItem))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeRequestMessageItem))]
+    [ModelReaderWriterBuildable(typeof(UnknownRealtimeRequestMessageItem))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeRequestSystemMessageItem))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeRequestTextContentPart))]
+    [ModelReaderWriterBuildable(typeof(ConversationContentPart))]
+    [ModelReaderWriterBuildable(typeof(UnknownRealtimeContentPart))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeRequestAudioContentPart))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeResponseTextContentPart))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeResponseAudioContentPart))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeRequestUserMessageItem))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeRequestAssistantMessageItem))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeRequestFunctionCallItem))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeRequestFunctionCallOutputItem))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEventConversationItemTruncate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEventConversationItemDelete))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEventResponseCreate))]
+    [ModelReaderWriterBuildable(typeof(ConversationResponseOptions))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEventResponseCancel))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEventConversationItemRetrieve))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeClientEventTranscriptionSessionUpdate))]
+    [ModelReaderWriterBuildable(typeof(TranscriptionSessionOptions))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeTranscriptionSessionCreateRequestClientSecret))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeTranscriptionSessionCreateRequestClientSecretExpiresAt))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeTranscriptionSessionCreateRequestInputAudioTranscription))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeTranscriptionSessionCreateRequestTurnDetection))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeTranscriptionSessionCreateRequestInputAudioNoiseReduction1))]
+    [ModelReaderWriterBuildable(typeof(RealtimeUpdate))]
+    [ModelReaderWriterBuildable(typeof(UnknownRealtimeServerEvent))]
+    [ModelReaderWriterBuildable(typeof(RealtimeErrorUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventErrorError))]
+    [ModelReaderWriterBuildable(typeof(ConversationSessionStartedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeResponseSession))]
+    [ModelReaderWriterBuildable(typeof(ConversationSessionConfiguredUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventConversationCreated))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventConversationCreatedConversation))]
+    [ModelReaderWriterBuildable(typeof(InputAudioCommittedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InputAudioClearedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InputAudioSpeechStartedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InputAudioSpeechFinishedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventOutputAudioBufferCleared))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventOutputAudioBufferStarted))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventOutputAudioBufferStopped))]
+    [ModelReaderWriterBuildable(typeof(ItemCreatedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeResponseItem))]
+    [ModelReaderWriterBuildable(typeof(UnknownRealtimeResponseItem))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeResponseMessageItem))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeResponseFunctionCallItem))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeResponseFunctionCallOutputItem))]
+    [ModelReaderWriterBuildable(typeof(InputAudioTranscriptionFinishedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalLogProbProperties))]
+    [ModelReaderWriterBuildable(typeof(InputAudioTranscriptionFailedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventConversationItemInputAudioTranscriptionFailedError))]
+    [ModelReaderWriterBuildable(typeof(ItemTruncatedUpdate))]
+    [ModelReaderWriterBuildable(typeof(ItemDeletedUpdate))]
+    [ModelReaderWriterBuildable(typeof(ResponseStartedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeResponse))]
+    [ModelReaderWriterBuildable(typeof(ConversationStatusDetails))]
+    [ModelReaderWriterBuildable(typeof(ConversationTokenUsage))]
+    [ModelReaderWriterBuildable(typeof(ConversationInputTokenUsageDetails))]
+    [ModelReaderWriterBuildable(typeof(ConversationOutputTokenUsageDetails))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeResponseStatusDetailsError))]
+    [ModelReaderWriterBuildable(typeof(ResponseFinishedUpdate))]
+    [ModelReaderWriterBuildable(typeof(OutputStreamingStartedUpdate))]
+    [ModelReaderWriterBuildable(typeof(OutputStreamingFinishedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventResponseContentPartAdded))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventResponseContentPartDone))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventResponseTextDelta))]
+    [ModelReaderWriterBuildable(typeof(OutputTextFinishedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventResponseAudioTranscriptDelta))]
+    [ModelReaderWriterBuildable(typeof(OutputAudioTranscriptionFinishedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventResponseAudioDelta))]
+    [ModelReaderWriterBuildable(typeof(OutputAudioFinishedUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventResponseFunctionCallArgumentsDelta))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeServerEventResponseFunctionCallArgumentsDone))]
+    [ModelReaderWriterBuildable(typeof(RateLimitsUpdate))]
+    [ModelReaderWriterBuildable(typeof(ConversationRateLimitDetailsItem))]
+    [ModelReaderWriterBuildable(typeof(InputAudioTranscriptionDeltaUpdate))]
+    [ModelReaderWriterBuildable(typeof(ItemRetrievedUpdate))]
+    [ModelReaderWriterBuildable(typeof(TranscriptionSessionConfiguredUpdate))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeTranscriptionSessionCreateResponse))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeTranscriptionSessionCreateResponseClientSecret))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeTranscriptionSessionCreateResponseInputAudioTranscription))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeTranscriptionSessionCreateResponseTurnDetection))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSessionCreateRequest))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSessionCreateRequestInputAudioTranscription))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSessionCreateRequestTurnDetection))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSessionCreateRequestInputAudioNoiseReduction1))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSessionCreateRequestClientSecret))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSessionCreateRequestClientSecretExpiresAt))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSessionCreateRequestTracing1))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSessionCreateResponse))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSessionCreateResponseClientSecret))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSessionCreateResponseInputAudioTranscription))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSessionCreateResponseTurnDetection))]
+    [ModelReaderWriterBuildable(typeof(InternalRealtimeSessionCreateResponseTracing1))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateUploadRequest))]
+    [ModelReaderWriterBuildable(typeof(InternalUpload))]
+    [ModelReaderWriterBuildable(typeof(InternalAddUploadPartRequest))]
+    [ModelReaderWriterBuildable(typeof(InternalUploadPart))]
+    [ModelReaderWriterBuildable(typeof(InternalCompleteUploadRequest))]
+    [ModelReaderWriterBuildable(typeof(InternalBatchRequestInput))]
+    [ModelReaderWriterBuildable(typeof(InternalBatchRequestOutput))]
+    [ModelReaderWriterBuildable(typeof(InternalBatchRequestOutputResponse))]
+    [ModelReaderWriterBuildable(typeof(InternalBatchRequestOutputError))]
+    [ModelReaderWriterBuildable(typeof(ChatFunctionChoice))]
+    [ModelReaderWriterBuildable(typeof(ChatToolChoice))]
+    [ModelReaderWriterBuildable(typeof(InternalTodoFineTuneChatRequestInput))]
+    [ModelReaderWriterBuildable(typeof(InternalFineTuningJobsPageToken))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaContent))]
+    [ModelReaderWriterBuildable(typeof(UnknownMessageDeltaContent))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaContentImageFileObject))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaContentImageFileObjectImageFile))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaContentImageUrlObject))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaContentImageUrlObjectImageUrl))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaContentTextObject))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaContentTextObjectText))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaTextContentAnnotation))]
+    [ModelReaderWriterBuildable(typeof(UnknownMessageDeltaTextContentAnnotation))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaContentTextAnnotationsFileCitationObject))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaContentTextAnnotationsFileCitationObjectFileCitation))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaContentTextAnnotationsFilePathObject))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaContentTextAnnotationsFilePathObjectFilePath))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaContentRefusalObject))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaObject))]
+    [ModelReaderWriterBuildable(typeof(InternalMessageDeltaObjectDelta))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDelta))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaObjectDelta))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetails))]
+    [ModelReaderWriterBuildable(typeof(UnknownRunStepDeltaStepDetails))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsMessageCreationObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsMessageCreationObjectMessageCreation))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsToolCallsObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsToolCallsObjectToolCallsObject))]
+    [ModelReaderWriterBuildable(typeof(UnknownRunStepDeltaStepDetailsToolCallsObjectToolCallsObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsToolCallsCodeObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsToolCallsCodeObjectCodeInterpreter))]
+    [ModelReaderWriterBuildable(typeof(RunStepUpdateCodeInterpreterOutput))]
+    [ModelReaderWriterBuildable(typeof(UnknownRunStepDeltaStepDetailsToolCallsCodeObjectCodeInterpreterOutputsObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsToolCallsCodeOutputLogsObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsToolCallsCodeOutputImageObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsToolCallsCodeOutputImageObjectImage))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsToolCallsFileSearchObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsToolCallsFileSearchObjectFileSearch))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsToolCallsFunctionObject))]
+    [ModelReaderWriterBuildable(typeof(InternalRunStepDeltaStepDetailsToolCallsFunctionObjectFunction))]
+    [ModelReaderWriterBuildable(typeof(InternalCreateThreadRequestToolResourcesFileSearchBase))]
+    [ModelReaderWriterBuildable(typeof(AudioTranscription))]
+    [ModelReaderWriterBuildable(typeof(ChatCompletionCollectionOptions))]
+    [ModelReaderWriterBuildable(typeof(ChatCompletionMessageCollectionOptions))]
+    [ModelReaderWriterBuildable(typeof(ChatResponseFormat))]
+    [ModelReaderWriterBuildable(typeof(InternalUnknownChatResponseFormat))]
+    [ModelReaderWriterBuildable(typeof(InternalDotNetChatResponseFormatText))]
+    [ModelReaderWriterBuildable(typeof(InternalDotNetChatResponseFormatJsonObject))]
+    [ModelReaderWriterBuildable(typeof(InternalDotNetChatResponseFormatJsonSchema))]
+    [ModelReaderWriterBuildable(typeof(InternalDotNetChatResponseFormatJsonSchemaJsonSchema))]
+    [ModelReaderWriterBuildable(typeof(AssistantResponseFormat))]
+    [ModelReaderWriterBuildable(typeof(InternalUnknownDotNetAssistantResponseFormat))]
+    [ModelReaderWriterBuildable(typeof(InternalDotNetAssistantResponseFormatText))]
+    [ModelReaderWriterBuildable(typeof(InternalDotNetAssistantResponseFormatJsonObject))]
+    [ModelReaderWriterBuildable(typeof(InternalDotNetAssistantResponseFormatJsonSchema))]
+    [ModelReaderWriterBuildable(typeof(InternalDotNetAssistantResponseFormatJsonSchemaJsonSchema))]
+    [ModelReaderWriterBuildable(typeof(AudioTokenLogProbabilityDetails))]
+    [ModelReaderWriterBuildable(typeof(InternalDotNetRealtimeLogProbProperties))]
+    [ModelReaderWriterBuildable(typeof(WebSearchUserLocation))]
+    [ModelReaderWriterBuildable(typeof(InternalUnknownDotnetResponseWebSearchLocation))]
+    [ModelReaderWriterBuildable(typeof(InternalDotnetResponseWebSearchApproximateLocation))]
+    [ModelReaderWriterBuildable(typeof(FileChunkingStrategy))]
+    [ModelReaderWriterBuildable(typeof(InternalUnknownDotNetCombinedChunkingStrategyParam))]
+    [ModelReaderWriterBuildable(typeof(InternalDotNetCombinedAutoChunkingStrategyParam))]
+    [ModelReaderWriterBuildable(typeof(StaticFileChunkingStrategy))]
+    [ModelReaderWriterBuildable(typeof(InternalDotNetCombinedOtherChunkingStrategyParam))]
+    [ModelReaderWriterBuildable(typeof(ContainerListResource))]
+    [ModelReaderWriterBuildable(typeof(ContainerResource))]
+    [ModelReaderWriterBuildable(typeof(ContainerResourceExpiresAfter))]
+    [ModelReaderWriterBuildable(typeof(CreateContainerBody))]
+    [ModelReaderWriterBuildable(typeof(CreateContainerBodyExpiresAfter))]
+    [ModelReaderWriterBuildable(typeof(DeleteContainerResponse))]
+    [ModelReaderWriterBuildable(typeof(CreateContainerFileBody))]
+    [ModelReaderWriterBuildable(typeof(ContainerFileResource))]
+    [ModelReaderWriterBuildable(typeof(ContainerFileListResource))]
+    [ModelReaderWriterBuildable(typeof(DeleteContainerFileResponse))]
+    [ModelReaderWriterBuildable(typeof(RunGraderRequest))]
+    [ModelReaderWriterBuildable(typeof(RunGraderResponse))]
+    [ModelReaderWriterBuildable(typeof(RunGraderResponseMetadata))]
+    [ModelReaderWriterBuildable(typeof(RunGraderResponseMetadataErrors))]
+    [ModelReaderWriterBuildable(typeof(ValidateGraderRequest))]
+    [ModelReaderWriterBuildable(typeof(ValidateGraderResponse))]
     public partial class OpenAIContext : ModelReaderWriterContext
     {
     }
diff --git a/src/Generated/Models/Realtime/ConversationContentPartKind.cs b/src/Generated/Models/Realtime/ConversationContentPartKind.cs
index 32da7dd1b..676dc5dd5 100644
--- a/src/Generated/Models/Realtime/ConversationContentPartKind.cs
+++ b/src/Generated/Models/Realtime/ConversationContentPartKind.cs
@@ -35,6 +35,8 @@ public ConversationContentPartKind(string value)
 
         public static implicit operator ConversationContentPartKind(string value) => new ConversationContentPartKind(value);
 
+        public static implicit operator ConversationContentPartKind?(string value) => value == null ? null : new ConversationContentPartKind(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ConversationContentPartKind other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/ConversationIncompleteReason.cs b/src/Generated/Models/Realtime/ConversationIncompleteReason.cs
index ffabc74e5..8c39406a1 100644
--- a/src/Generated/Models/Realtime/ConversationIncompleteReason.cs
+++ b/src/Generated/Models/Realtime/ConversationIncompleteReason.cs
@@ -39,6 +39,8 @@ public ConversationIncompleteReason(string value)
 
         public static implicit operator ConversationIncompleteReason(string value) => new ConversationIncompleteReason(value);
 
+        public static implicit operator ConversationIncompleteReason?(string value) => value == null ? null : new ConversationIncompleteReason(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ConversationIncompleteReason other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/ConversationItemStatus.cs b/src/Generated/Models/Realtime/ConversationItemStatus.cs
index e3f03b909..c8023bb58 100644
--- a/src/Generated/Models/Realtime/ConversationItemStatus.cs
+++ b/src/Generated/Models/Realtime/ConversationItemStatus.cs
@@ -36,6 +36,8 @@ public ConversationItemStatus(string value)
 
         public static implicit operator ConversationItemStatus(string value) => new ConversationItemStatus(value);
 
+        public static implicit operator ConversationItemStatus?(string value) => value == null ? null : new ConversationItemStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ConversationItemStatus other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/ConversationMessageRole.cs b/src/Generated/Models/Realtime/ConversationMessageRole.cs
index 2e5764891..27b3cffe2 100644
--- a/src/Generated/Models/Realtime/ConversationMessageRole.cs
+++ b/src/Generated/Models/Realtime/ConversationMessageRole.cs
@@ -36,6 +36,8 @@ public ConversationMessageRole(string value)
 
         public static implicit operator ConversationMessageRole(string value) => new ConversationMessageRole(value);
 
+        public static implicit operator ConversationMessageRole?(string value) => value == null ? null : new ConversationMessageRole(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ConversationMessageRole other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/ConversationStatus.cs b/src/Generated/Models/Realtime/ConversationStatus.cs
index 89c834973..97cce22e4 100644
--- a/src/Generated/Models/Realtime/ConversationStatus.cs
+++ b/src/Generated/Models/Realtime/ConversationStatus.cs
@@ -39,6 +39,8 @@ public ConversationStatus(string value)
 
         public static implicit operator ConversationStatus(string value) => new ConversationStatus(value);
 
+        public static implicit operator ConversationStatus?(string value) => value == null ? null : new ConversationStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ConversationStatus other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/ConversationToolKind.cs b/src/Generated/Models/Realtime/ConversationToolKind.cs
index 83240bcc2..255a1f8fb 100644
--- a/src/Generated/Models/Realtime/ConversationToolKind.cs
+++ b/src/Generated/Models/Realtime/ConversationToolKind.cs
@@ -30,6 +30,8 @@ public ConversationToolKind(string value)
 
         public static implicit operator ConversationToolKind(string value) => new ConversationToolKind(value);
 
+        public static implicit operator ConversationToolKind?(string value) => value == null ? null : new ConversationToolKind(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ConversationToolKind other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/ConversationVoice.cs b/src/Generated/Models/Realtime/ConversationVoice.cs
index 46057b361..3a1e04e5f 100644
--- a/src/Generated/Models/Realtime/ConversationVoice.cs
+++ b/src/Generated/Models/Realtime/ConversationVoice.cs
@@ -60,6 +60,8 @@ public ConversationVoice(string value)
 
         public static implicit operator ConversationVoice(string value) => new ConversationVoice(value);
 
+        public static implicit operator ConversationVoice?(string value) => value == null ? null : new ConversationVoice(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ConversationVoice other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InputTranscriptionModel.cs b/src/Generated/Models/Realtime/InputTranscriptionModel.cs
index 59a498312..48561aec3 100644
--- a/src/Generated/Models/Realtime/InputTranscriptionModel.cs
+++ b/src/Generated/Models/Realtime/InputTranscriptionModel.cs
@@ -30,6 +30,8 @@ public InputTranscriptionModel(string value)
 
         public static implicit operator InputTranscriptionModel(string value) => new InputTranscriptionModel(value);
 
+        public static implicit operator InputTranscriptionModel?(string value) => value == null ? null : new InputTranscriptionModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InputTranscriptionModel other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeClientEventType.cs b/src/Generated/Models/Realtime/InternalRealtimeClientEventType.cs
index 85c33c9fe..9ade3bbaa 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeClientEventType.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeClientEventType.cs
@@ -61,6 +61,8 @@ public InternalRealtimeClientEventType(string value)
 
         public static implicit operator InternalRealtimeClientEventType(string value) => new InternalRealtimeClientEventType(value);
 
+        public static implicit operator InternalRealtimeClientEventType?(string value) => value == null ? null : new InternalRealtimeClientEventType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeClientEventType other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeItemType.cs b/src/Generated/Models/Realtime/InternalRealtimeItemType.cs
index c803cd0e0..6e895964a 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeItemType.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeItemType.cs
@@ -34,6 +34,8 @@ public InternalRealtimeItemType(string value)
 
         public static implicit operator InternalRealtimeItemType(string value) => new InternalRealtimeItemType(value);
 
+        public static implicit operator InternalRealtimeItemType?(string value) => value == null ? null : new InternalRealtimeItemType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeItemType other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeRequestSessionModality.cs b/src/Generated/Models/Realtime/InternalRealtimeRequestSessionModality.cs
index 497862c0b..3b9b5d99c 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeRequestSessionModality.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeRequestSessionModality.cs
@@ -31,6 +31,8 @@ public InternalRealtimeRequestSessionModality(string value)
 
         public static implicit operator InternalRealtimeRequestSessionModality(string value) => new InternalRealtimeRequestSessionModality(value);
 
+        public static implicit operator InternalRealtimeRequestSessionModality?(string value) => value == null ? null : new InternalRealtimeRequestSessionModality(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeRequestSessionModality other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeRequestSessionModel.cs b/src/Generated/Models/Realtime/InternalRealtimeRequestSessionModel.cs
index 6c8ae3c93..e05751103 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeRequestSessionModel.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeRequestSessionModel.cs
@@ -40,6 +40,8 @@ public InternalRealtimeRequestSessionModel(string value)
 
         public static implicit operator InternalRealtimeRequestSessionModel(string value) => new InternalRealtimeRequestSessionModel(value);
 
+        public static implicit operator InternalRealtimeRequestSessionModel?(string value) => value == null ? null : new InternalRealtimeRequestSessionModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeRequestSessionModel other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeResponseModality.cs b/src/Generated/Models/Realtime/InternalRealtimeResponseModality.cs
index 9c7a6570b..28ab69871 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeResponseModality.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeResponseModality.cs
@@ -31,6 +31,8 @@ public InternalRealtimeResponseModality(string value)
 
         public static implicit operator InternalRealtimeResponseModality(string value) => new InternalRealtimeResponseModality(value);
 
+        public static implicit operator InternalRealtimeResponseModality?(string value) => value == null ? null : new InternalRealtimeResponseModality(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeResponseModality other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeResponseOutputAudioFormat.cs b/src/Generated/Models/Realtime/InternalRealtimeResponseOutputAudioFormat.cs
index 915e1cac4..7333e9ef6 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeResponseOutputAudioFormat.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeResponseOutputAudioFormat.cs
@@ -34,6 +34,8 @@ public InternalRealtimeResponseOutputAudioFormat(string value)
 
         public static implicit operator InternalRealtimeResponseOutputAudioFormat(string value) => new InternalRealtimeResponseOutputAudioFormat(value);
 
+        public static implicit operator InternalRealtimeResponseOutputAudioFormat?(string value) => value == null ? null : new InternalRealtimeResponseOutputAudioFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeResponseOutputAudioFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeResponseStatusDetailsType.cs b/src/Generated/Models/Realtime/InternalRealtimeResponseStatusDetailsType.cs
index b164b8d35..24d9798e3 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeResponseStatusDetailsType.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeResponseStatusDetailsType.cs
@@ -37,6 +37,8 @@ public InternalRealtimeResponseStatusDetailsType(string value)
 
         public static implicit operator InternalRealtimeResponseStatusDetailsType(string value) => new InternalRealtimeResponseStatusDetailsType(value);
 
+        public static implicit operator InternalRealtimeResponseStatusDetailsType?(string value) => value == null ? null : new InternalRealtimeResponseStatusDetailsType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeResponseStatusDetailsType other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestInputAudioNoiseReductionType.cs b/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestInputAudioNoiseReductionType.cs
index 57933b1d6..05d957fa8 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestInputAudioNoiseReductionType.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestInputAudioNoiseReductionType.cs
@@ -31,6 +31,8 @@ public InternalRealtimeSessionCreateRequestInputAudioNoiseReductionType(string v
 
         public static implicit operator InternalRealtimeSessionCreateRequestInputAudioNoiseReductionType(string value) => new InternalRealtimeSessionCreateRequestInputAudioNoiseReductionType(value);
 
+        public static implicit operator InternalRealtimeSessionCreateRequestInputAudioNoiseReductionType?(string value) => value == null ? null : new InternalRealtimeSessionCreateRequestInputAudioNoiseReductionType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeSessionCreateRequestInputAudioNoiseReductionType other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestModel.cs b/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestModel.cs
index f1bb40335..814ccf22f 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestModel.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestModel.cs
@@ -43,6 +43,8 @@ public InternalRealtimeSessionCreateRequestModel(string value)
 
         public static implicit operator InternalRealtimeSessionCreateRequestModel(string value) => new InternalRealtimeSessionCreateRequestModel(value);
 
+        public static implicit operator InternalRealtimeSessionCreateRequestModel?(string value) => value == null ? null : new InternalRealtimeSessionCreateRequestModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeSessionCreateRequestModel other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestTurnDetectionEagerness.cs b/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestTurnDetectionEagerness.cs
index fb9173f1b..0065381db 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestTurnDetectionEagerness.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestTurnDetectionEagerness.cs
@@ -37,6 +37,8 @@ public InternalRealtimeSessionCreateRequestTurnDetectionEagerness(string value)
 
         public static implicit operator InternalRealtimeSessionCreateRequestTurnDetectionEagerness(string value) => new InternalRealtimeSessionCreateRequestTurnDetectionEagerness(value);
 
+        public static implicit operator InternalRealtimeSessionCreateRequestTurnDetectionEagerness?(string value) => value == null ? null : new InternalRealtimeSessionCreateRequestTurnDetectionEagerness(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeSessionCreateRequestTurnDetectionEagerness other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestTurnDetectionType.cs b/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestTurnDetectionType.cs
index 40dc02e79..b4b3b071e 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestTurnDetectionType.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeSessionCreateRequestTurnDetectionType.cs
@@ -31,6 +31,8 @@ public InternalRealtimeSessionCreateRequestTurnDetectionType(string value)
 
         public static implicit operator InternalRealtimeSessionCreateRequestTurnDetectionType(string value) => new InternalRealtimeSessionCreateRequestTurnDetectionType(value);
 
+        public static implicit operator InternalRealtimeSessionCreateRequestTurnDetectionType?(string value) => value == null ? null : new InternalRealtimeSessionCreateRequestTurnDetectionType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeSessionCreateRequestTurnDetectionType other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestInputAudioFormat.cs b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestInputAudioFormat.cs
index d273f765c..8a05fb885 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestInputAudioFormat.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestInputAudioFormat.cs
@@ -34,6 +34,8 @@ public InternalRealtimeTranscriptionSessionCreateRequestInputAudioFormat(string
 
         public static implicit operator InternalRealtimeTranscriptionSessionCreateRequestInputAudioFormat(string value) => new InternalRealtimeTranscriptionSessionCreateRequestInputAudioFormat(value);
 
+        public static implicit operator InternalRealtimeTranscriptionSessionCreateRequestInputAudioFormat?(string value) => value == null ? null : new InternalRealtimeTranscriptionSessionCreateRequestInputAudioFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeTranscriptionSessionCreateRequestInputAudioFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestInputAudioNoiseReductionType.cs b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestInputAudioNoiseReductionType.cs
index fa1b67957..4a9cdfca2 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestInputAudioNoiseReductionType.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestInputAudioNoiseReductionType.cs
@@ -31,6 +31,8 @@ public InternalRealtimeTranscriptionSessionCreateRequestInputAudioNoiseReduction
 
         public static implicit operator InternalRealtimeTranscriptionSessionCreateRequestInputAudioNoiseReductionType(string value) => new InternalRealtimeTranscriptionSessionCreateRequestInputAudioNoiseReductionType(value);
 
+        public static implicit operator InternalRealtimeTranscriptionSessionCreateRequestInputAudioNoiseReductionType?(string value) => value == null ? null : new InternalRealtimeTranscriptionSessionCreateRequestInputAudioNoiseReductionType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeTranscriptionSessionCreateRequestInputAudioNoiseReductionType other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestInputAudioTranscriptionModel.cs b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestInputAudioTranscriptionModel.cs
index 35aef1c6f..3411c1138 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestInputAudioTranscriptionModel.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestInputAudioTranscriptionModel.cs
@@ -34,6 +34,8 @@ public InternalRealtimeTranscriptionSessionCreateRequestInputAudioTranscriptionM
 
         public static implicit operator InternalRealtimeTranscriptionSessionCreateRequestInputAudioTranscriptionModel(string value) => new InternalRealtimeTranscriptionSessionCreateRequestInputAudioTranscriptionModel(value);
 
+        public static implicit operator InternalRealtimeTranscriptionSessionCreateRequestInputAudioTranscriptionModel?(string value) => value == null ? null : new InternalRealtimeTranscriptionSessionCreateRequestInputAudioTranscriptionModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeTranscriptionSessionCreateRequestInputAudioTranscriptionModel other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestModality.cs b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestModality.cs
index 99b82cc95..672c3d982 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestModality.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestModality.cs
@@ -31,6 +31,8 @@ public InternalRealtimeTranscriptionSessionCreateRequestModality(string value)
 
         public static implicit operator InternalRealtimeTranscriptionSessionCreateRequestModality(string value) => new InternalRealtimeTranscriptionSessionCreateRequestModality(value);
 
+        public static implicit operator InternalRealtimeTranscriptionSessionCreateRequestModality?(string value) => value == null ? null : new InternalRealtimeTranscriptionSessionCreateRequestModality(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeTranscriptionSessionCreateRequestModality other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionEagerness.cs b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionEagerness.cs
index 9f5e29398..8c771b10c 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionEagerness.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionEagerness.cs
@@ -37,6 +37,8 @@ public InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionEagerness(s
 
         public static implicit operator InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionEagerness(string value) => new InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionEagerness(value);
 
+        public static implicit operator InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionEagerness?(string value) => value == null ? null : new InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionEagerness(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionEagerness other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionType.cs b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionType.cs
index d1fc871db..5cd63aa9c 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionType.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionType.cs
@@ -31,6 +31,8 @@ public InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionType(string
 
         public static implicit operator InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionType(string value) => new InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionType(value);
 
+        public static implicit operator InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionType?(string value) => value == null ? null : new InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeTranscriptionSessionCreateRequestTurnDetectionType other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateResponseInputAudioTranscriptionModel.cs b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateResponseInputAudioTranscriptionModel.cs
index c3e99f6f2..a006ca7a3 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateResponseInputAudioTranscriptionModel.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateResponseInputAudioTranscriptionModel.cs
@@ -34,6 +34,8 @@ public InternalRealtimeTranscriptionSessionCreateResponseInputAudioTranscription
 
         public static implicit operator InternalRealtimeTranscriptionSessionCreateResponseInputAudioTranscriptionModel(string value) => new InternalRealtimeTranscriptionSessionCreateResponseInputAudioTranscriptionModel(value);
 
+        public static implicit operator InternalRealtimeTranscriptionSessionCreateResponseInputAudioTranscriptionModel?(string value) => value == null ? null : new InternalRealtimeTranscriptionSessionCreateResponseInputAudioTranscriptionModel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeTranscriptionSessionCreateResponseInputAudioTranscriptionModel other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateResponseModality.cs b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateResponseModality.cs
index 75c9ecceb..100b5c25d 100644
--- a/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateResponseModality.cs
+++ b/src/Generated/Models/Realtime/InternalRealtimeTranscriptionSessionCreateResponseModality.cs
@@ -31,6 +31,8 @@ public InternalRealtimeTranscriptionSessionCreateResponseModality(string value)
 
         public static implicit operator InternalRealtimeTranscriptionSessionCreateResponseModality(string value) => new InternalRealtimeTranscriptionSessionCreateResponseModality(value);
 
+        public static implicit operator InternalRealtimeTranscriptionSessionCreateResponseModality?(string value) => value == null ? null : new InternalRealtimeTranscriptionSessionCreateResponseModality(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalRealtimeTranscriptionSessionCreateResponseModality other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/RealtimeAudioFormat.cs b/src/Generated/Models/Realtime/RealtimeAudioFormat.cs
index db7621079..36192fcf1 100644
--- a/src/Generated/Models/Realtime/RealtimeAudioFormat.cs
+++ b/src/Generated/Models/Realtime/RealtimeAudioFormat.cs
@@ -36,6 +36,8 @@ public RealtimeAudioFormat(string value)
 
         public static implicit operator RealtimeAudioFormat(string value) => new RealtimeAudioFormat(value);
 
+        public static implicit operator RealtimeAudioFormat?(string value) => value == null ? null : new RealtimeAudioFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is RealtimeAudioFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/ResponseConversationSelection.cs b/src/Generated/Models/Realtime/ResponseConversationSelection.cs
index f4d230362..ce31b62d7 100644
--- a/src/Generated/Models/Realtime/ResponseConversationSelection.cs
+++ b/src/Generated/Models/Realtime/ResponseConversationSelection.cs
@@ -33,6 +33,8 @@ public ResponseConversationSelection(string value)
 
         public static implicit operator ResponseConversationSelection(string value) => new ResponseConversationSelection(value);
 
+        public static implicit operator ResponseConversationSelection?(string value) => value == null ? null : new ResponseConversationSelection(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ResponseConversationSelection other && Equals(other);
 
diff --git a/src/Generated/Models/Realtime/SemanticEagernessLevel.cs b/src/Generated/Models/Realtime/SemanticEagernessLevel.cs
index 85b851e11..a551d2622 100644
--- a/src/Generated/Models/Realtime/SemanticEagernessLevel.cs
+++ b/src/Generated/Models/Realtime/SemanticEagernessLevel.cs
@@ -39,6 +39,8 @@ public SemanticEagernessLevel(string value)
 
         public static implicit operator SemanticEagernessLevel(string value) => new SemanticEagernessLevel(value);
 
+        public static implicit operator SemanticEagernessLevel?(string value) => value == null ? null : new SemanticEagernessLevel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is SemanticEagernessLevel other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/ComputerToolEnvironment.cs b/src/Generated/Models/Responses/ComputerToolEnvironment.cs
index 80f325d11..274593179 100644
--- a/src/Generated/Models/Responses/ComputerToolEnvironment.cs
+++ b/src/Generated/Models/Responses/ComputerToolEnvironment.cs
@@ -42,6 +42,8 @@ public ComputerToolEnvironment(string value)
 
         public static implicit operator ComputerToolEnvironment(string value) => new ComputerToolEnvironment(value);
 
+        public static implicit operator ComputerToolEnvironment?(string value) => value == null ? null : new ComputerToolEnvironment(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ComputerToolEnvironment other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/FileSearchToolRanker.cs b/src/Generated/Models/Responses/FileSearchToolRanker.cs
index 0b8c6cc63..419f2af69 100644
--- a/src/Generated/Models/Responses/FileSearchToolRanker.cs
+++ b/src/Generated/Models/Responses/FileSearchToolRanker.cs
@@ -33,6 +33,8 @@ public FileSearchToolRanker(string value)
 
         public static implicit operator FileSearchToolRanker(string value) => new FileSearchToolRanker(value);
 
+        public static implicit operator FileSearchToolRanker?(string value) => value == null ? null : new FileSearchToolRanker(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is FileSearchToolRanker other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalCodeInterpreterToolCallItemResourceStatus.cs b/src/Generated/Models/Responses/InternalCodeInterpreterToolCallItemResourceStatus.cs
index 0bbd27d1a..a80e50098 100644
--- a/src/Generated/Models/Responses/InternalCodeInterpreterToolCallItemResourceStatus.cs
+++ b/src/Generated/Models/Responses/InternalCodeInterpreterToolCallItemResourceStatus.cs
@@ -34,6 +34,8 @@ public InternalCodeInterpreterToolCallItemResourceStatus(string value)
 
         public static implicit operator InternalCodeInterpreterToolCallItemResourceStatus(string value) => new InternalCodeInterpreterToolCallItemResourceStatus(value);
 
+        public static implicit operator InternalCodeInterpreterToolCallItemResourceStatus?(string value) => value == null ? null : new InternalCodeInterpreterToolCallItemResourceStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCodeInterpreterToolCallItemResourceStatus other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalComparisonFilterType.cs b/src/Generated/Models/Responses/InternalComparisonFilterType.cs
index 8d8d89b5a..af4b2d413 100644
--- a/src/Generated/Models/Responses/InternalComparisonFilterType.cs
+++ b/src/Generated/Models/Responses/InternalComparisonFilterType.cs
@@ -43,6 +43,8 @@ public InternalComparisonFilterType(string value)
 
         public static implicit operator InternalComparisonFilterType(string value) => new InternalComparisonFilterType(value);
 
+        public static implicit operator InternalComparisonFilterType?(string value) => value == null ? null : new InternalComparisonFilterType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalComparisonFilterType other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalCompoundFilterType.cs b/src/Generated/Models/Responses/InternalCompoundFilterType.cs
index 9585e845a..8705ddbb8 100644
--- a/src/Generated/Models/Responses/InternalCompoundFilterType.cs
+++ b/src/Generated/Models/Responses/InternalCompoundFilterType.cs
@@ -31,6 +31,8 @@ public InternalCompoundFilterType(string value)
 
         public static implicit operator InternalCompoundFilterType(string value) => new InternalCompoundFilterType(value);
 
+        public static implicit operator InternalCompoundFilterType?(string value) => value == null ? null : new InternalCompoundFilterType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalCompoundFilterType other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalComputerUsePreviewToolCallOutputOutputType.cs b/src/Generated/Models/Responses/InternalComputerUsePreviewToolCallOutputOutputType.cs
index f8c76b097..e4ba02fba 100644
--- a/src/Generated/Models/Responses/InternalComputerUsePreviewToolCallOutputOutputType.cs
+++ b/src/Generated/Models/Responses/InternalComputerUsePreviewToolCallOutputOutputType.cs
@@ -28,6 +28,8 @@ public InternalComputerUsePreviewToolCallOutputOutputType(string value)
 
         public static implicit operator InternalComputerUsePreviewToolCallOutputOutputType(string value) => new InternalComputerUsePreviewToolCallOutputOutputType(value);
 
+        public static implicit operator InternalComputerUsePreviewToolCallOutputOutputType?(string value) => value == null ? null : new InternalComputerUsePreviewToolCallOutputOutputType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalComputerUsePreviewToolCallOutputOutputType other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalImageGenToolBackground.cs b/src/Generated/Models/Responses/InternalImageGenToolBackground.cs
index e2eb285c1..51f5b974b 100644
--- a/src/Generated/Models/Responses/InternalImageGenToolBackground.cs
+++ b/src/Generated/Models/Responses/InternalImageGenToolBackground.cs
@@ -34,6 +34,8 @@ public InternalImageGenToolBackground(string value)
 
         public static implicit operator InternalImageGenToolBackground(string value) => new InternalImageGenToolBackground(value);
 
+        public static implicit operator InternalImageGenToolBackground?(string value) => value == null ? null : new InternalImageGenToolBackground(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalImageGenToolBackground other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalImageGenToolCallItemResourceStatus.cs b/src/Generated/Models/Responses/InternalImageGenToolCallItemResourceStatus.cs
index 32c209d93..3a616e6bf 100644
--- a/src/Generated/Models/Responses/InternalImageGenToolCallItemResourceStatus.cs
+++ b/src/Generated/Models/Responses/InternalImageGenToolCallItemResourceStatus.cs
@@ -37,6 +37,8 @@ public InternalImageGenToolCallItemResourceStatus(string value)
 
         public static implicit operator InternalImageGenToolCallItemResourceStatus(string value) => new InternalImageGenToolCallItemResourceStatus(value);
 
+        public static implicit operator InternalImageGenToolCallItemResourceStatus?(string value) => value == null ? null : new InternalImageGenToolCallItemResourceStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalImageGenToolCallItemResourceStatus other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalImageGenToolModeration.cs b/src/Generated/Models/Responses/InternalImageGenToolModeration.cs
index f8d60bf77..fdbd0d196 100644
--- a/src/Generated/Models/Responses/InternalImageGenToolModeration.cs
+++ b/src/Generated/Models/Responses/InternalImageGenToolModeration.cs
@@ -31,6 +31,8 @@ public InternalImageGenToolModeration(string value)
 
         public static implicit operator InternalImageGenToolModeration(string value) => new InternalImageGenToolModeration(value);
 
+        public static implicit operator InternalImageGenToolModeration?(string value) => value == null ? null : new InternalImageGenToolModeration(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalImageGenToolModeration other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalImageGenToolOutputFormat.cs b/src/Generated/Models/Responses/InternalImageGenToolOutputFormat.cs
index e588a0577..2c90defd2 100644
--- a/src/Generated/Models/Responses/InternalImageGenToolOutputFormat.cs
+++ b/src/Generated/Models/Responses/InternalImageGenToolOutputFormat.cs
@@ -34,6 +34,8 @@ public InternalImageGenToolOutputFormat(string value)
 
         public static implicit operator InternalImageGenToolOutputFormat(string value) => new InternalImageGenToolOutputFormat(value);
 
+        public static implicit operator InternalImageGenToolOutputFormat?(string value) => value == null ? null : new InternalImageGenToolOutputFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalImageGenToolOutputFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalImageGenToolQuality.cs b/src/Generated/Models/Responses/InternalImageGenToolQuality.cs
index 5efbc280d..91dbe534b 100644
--- a/src/Generated/Models/Responses/InternalImageGenToolQuality.cs
+++ b/src/Generated/Models/Responses/InternalImageGenToolQuality.cs
@@ -37,6 +37,8 @@ public InternalImageGenToolQuality(string value)
 
         public static implicit operator InternalImageGenToolQuality(string value) => new InternalImageGenToolQuality(value);
 
+        public static implicit operator InternalImageGenToolQuality?(string value) => value == null ? null : new InternalImageGenToolQuality(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalImageGenToolQuality other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalImageGenToolSize.cs b/src/Generated/Models/Responses/InternalImageGenToolSize.cs
index 8c17d82b6..57f31013f 100644
--- a/src/Generated/Models/Responses/InternalImageGenToolSize.cs
+++ b/src/Generated/Models/Responses/InternalImageGenToolSize.cs
@@ -37,6 +37,8 @@ public InternalImageGenToolSize(string value)
 
         public static implicit operator InternalImageGenToolSize(string value) => new InternalImageGenToolSize(value);
 
+        public static implicit operator InternalImageGenToolSize?(string value) => value == null ? null : new InternalImageGenToolSize(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalImageGenToolSize other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalIncludable.cs b/src/Generated/Models/Responses/InternalIncludable.cs
index 4c267a22b..180691347 100644
--- a/src/Generated/Models/Responses/InternalIncludable.cs
+++ b/src/Generated/Models/Responses/InternalIncludable.cs
@@ -40,6 +40,8 @@ public InternalIncludable(string value)
 
         public static implicit operator InternalIncludable(string value) => new InternalIncludable(value);
 
+        public static implicit operator InternalIncludable?(string value) => value == null ? null : new InternalIncludable(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalIncludable other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalItemContentInputAudioFormat.cs b/src/Generated/Models/Responses/InternalItemContentInputAudioFormat.cs
index 62573608d..6233c63b6 100644
--- a/src/Generated/Models/Responses/InternalItemContentInputAudioFormat.cs
+++ b/src/Generated/Models/Responses/InternalItemContentInputAudioFormat.cs
@@ -31,6 +31,8 @@ public InternalItemContentInputAudioFormat(string value)
 
         public static implicit operator InternalItemContentInputAudioFormat(string value) => new InternalItemContentInputAudioFormat(value);
 
+        public static implicit operator InternalItemContentInputAudioFormat?(string value) => value == null ? null : new InternalItemContentInputAudioFormat(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalItemContentInputAudioFormat other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalItemContentType.cs b/src/Generated/Models/Responses/InternalItemContentType.cs
index 57a3ba440..bd4f6f938 100644
--- a/src/Generated/Models/Responses/InternalItemContentType.cs
+++ b/src/Generated/Models/Responses/InternalItemContentType.cs
@@ -46,6 +46,8 @@ public InternalItemContentType(string value)
 
         public static implicit operator InternalItemContentType(string value) => new InternalItemContentType(value);
 
+        public static implicit operator InternalItemContentType?(string value) => value == null ? null : new InternalItemContentType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalItemContentType other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalItemType.cs b/src/Generated/Models/Responses/InternalItemType.cs
index 38dea6f37..df4fe61da 100644
--- a/src/Generated/Models/Responses/InternalItemType.cs
+++ b/src/Generated/Models/Responses/InternalItemType.cs
@@ -76,6 +76,8 @@ public InternalItemType(string value)
 
         public static implicit operator InternalItemType(string value) => new InternalItemType(value);
 
+        public static implicit operator InternalItemType?(string value) => value == null ? null : new InternalItemType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalItemType other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalLocalShellToolCallItemResourceStatus.cs b/src/Generated/Models/Responses/InternalLocalShellToolCallItemResourceStatus.cs
index 0cc510697..01f6c1ddf 100644
--- a/src/Generated/Models/Responses/InternalLocalShellToolCallItemResourceStatus.cs
+++ b/src/Generated/Models/Responses/InternalLocalShellToolCallItemResourceStatus.cs
@@ -34,6 +34,8 @@ public InternalLocalShellToolCallItemResourceStatus(string value)
 
         public static implicit operator InternalLocalShellToolCallItemResourceStatus(string value) => new InternalLocalShellToolCallItemResourceStatus(value);
 
+        public static implicit operator InternalLocalShellToolCallItemResourceStatus?(string value) => value == null ? null : new InternalLocalShellToolCallItemResourceStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalLocalShellToolCallItemResourceStatus other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalLocalShellToolCallOutputItemResourceStatus.cs b/src/Generated/Models/Responses/InternalLocalShellToolCallOutputItemResourceStatus.cs
index 5e720b63e..da9a54d7b 100644
--- a/src/Generated/Models/Responses/InternalLocalShellToolCallOutputItemResourceStatus.cs
+++ b/src/Generated/Models/Responses/InternalLocalShellToolCallOutputItemResourceStatus.cs
@@ -34,6 +34,8 @@ public InternalLocalShellToolCallOutputItemResourceStatus(string value)
 
         public static implicit operator InternalLocalShellToolCallOutputItemResourceStatus(string value) => new InternalLocalShellToolCallOutputItemResourceStatus(value);
 
+        public static implicit operator InternalLocalShellToolCallOutputItemResourceStatus?(string value) => value == null ? null : new InternalLocalShellToolCallOutputItemResourceStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalLocalShellToolCallOutputItemResourceStatus other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalModelIdsResponses.cs b/src/Generated/Models/Responses/InternalModelIdsResponses.cs
index 16e2a91cc..8098a6cee 100644
--- a/src/Generated/Models/Responses/InternalModelIdsResponses.cs
+++ b/src/Generated/Models/Responses/InternalModelIdsResponses.cs
@@ -208,6 +208,8 @@ public InternalModelIdsResponses(string value)
 
         public static implicit operator InternalModelIdsResponses(string value) => new InternalModelIdsResponses(value);
 
+        public static implicit operator InternalModelIdsResponses?(string value) => value == null ? null : new InternalModelIdsResponses(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalModelIdsResponses other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalReasoningGenerateSummary.cs b/src/Generated/Models/Responses/InternalReasoningGenerateSummary.cs
index 9090fb6a5..3188b2b21 100644
--- a/src/Generated/Models/Responses/InternalReasoningGenerateSummary.cs
+++ b/src/Generated/Models/Responses/InternalReasoningGenerateSummary.cs
@@ -34,6 +34,8 @@ public InternalReasoningGenerateSummary(string value)
 
         public static implicit operator InternalReasoningGenerateSummary(string value) => new InternalReasoningGenerateSummary(value);
 
+        public static implicit operator InternalReasoningGenerateSummary?(string value) => value == null ? null : new InternalReasoningGenerateSummary(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalReasoningGenerateSummary other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalReasoningItemSummaryPartType.cs b/src/Generated/Models/Responses/InternalReasoningItemSummaryPartType.cs
index 717e06f11..0eb4bce31 100644
--- a/src/Generated/Models/Responses/InternalReasoningItemSummaryPartType.cs
+++ b/src/Generated/Models/Responses/InternalReasoningItemSummaryPartType.cs
@@ -28,6 +28,8 @@ public InternalReasoningItemSummaryPartType(string value)
 
         public static implicit operator InternalReasoningItemSummaryPartType(string value) => new InternalReasoningItemSummaryPartType(value);
 
+        public static implicit operator InternalReasoningItemSummaryPartType?(string value) => value == null ? null : new InternalReasoningItemSummaryPartType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalReasoningItemSummaryPartType other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalResponseStreamEventType.cs b/src/Generated/Models/Responses/InternalResponseStreamEventType.cs
index ef8d92b00..830864a8f 100644
--- a/src/Generated/Models/Responses/InternalResponseStreamEventType.cs
+++ b/src/Generated/Models/Responses/InternalResponseStreamEventType.cs
@@ -184,6 +184,8 @@ public InternalResponseStreamEventType(string value)
 
         public static implicit operator InternalResponseStreamEventType(string value) => new InternalResponseStreamEventType(value);
 
+        public static implicit operator InternalResponseStreamEventType?(string value) => value == null ? null : new InternalResponseStreamEventType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalResponseStreamEventType other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalResponsesMessageRole.cs b/src/Generated/Models/Responses/InternalResponsesMessageRole.cs
index 2cfee9fdf..971b3abf9 100644
--- a/src/Generated/Models/Responses/InternalResponsesMessageRole.cs
+++ b/src/Generated/Models/Responses/InternalResponsesMessageRole.cs
@@ -37,6 +37,8 @@ public InternalResponsesMessageRole(string value)
 
         public static implicit operator InternalResponsesMessageRole(string value) => new InternalResponsesMessageRole(value);
 
+        public static implicit operator InternalResponsesMessageRole?(string value) => value == null ? null : new InternalResponsesMessageRole(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalResponsesMessageRole other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalResponsesTextFormatType.cs b/src/Generated/Models/Responses/InternalResponsesTextFormatType.cs
index 269427759..0fb3ce5d0 100644
--- a/src/Generated/Models/Responses/InternalResponsesTextFormatType.cs
+++ b/src/Generated/Models/Responses/InternalResponsesTextFormatType.cs
@@ -34,6 +34,8 @@ public InternalResponsesTextFormatType(string value)
 
         public static implicit operator InternalResponsesTextFormatType(string value) => new InternalResponsesTextFormatType(value);
 
+        public static implicit operator InternalResponsesTextFormatType?(string value) => value == null ? null : new InternalResponsesTextFormatType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalResponsesTextFormatType other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalToolChoiceObjectType.cs b/src/Generated/Models/Responses/InternalToolChoiceObjectType.cs
index a3be715be..29335d120 100644
--- a/src/Generated/Models/Responses/InternalToolChoiceObjectType.cs
+++ b/src/Generated/Models/Responses/InternalToolChoiceObjectType.cs
@@ -46,6 +46,8 @@ public InternalToolChoiceObjectType(string value)
 
         public static implicit operator InternalToolChoiceObjectType(string value) => new InternalToolChoiceObjectType(value);
 
+        public static implicit operator InternalToolChoiceObjectType?(string value) => value == null ? null : new InternalToolChoiceObjectType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalToolChoiceObjectType other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalToolChoiceOptions.cs b/src/Generated/Models/Responses/InternalToolChoiceOptions.cs
index 3205887a4..6ec69fb14 100644
--- a/src/Generated/Models/Responses/InternalToolChoiceOptions.cs
+++ b/src/Generated/Models/Responses/InternalToolChoiceOptions.cs
@@ -34,6 +34,8 @@ public InternalToolChoiceOptions(string value)
 
         public static implicit operator InternalToolChoiceOptions(string value) => new InternalToolChoiceOptions(value);
 
+        public static implicit operator InternalToolChoiceOptions?(string value) => value == null ? null : new InternalToolChoiceOptions(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalToolChoiceOptions other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalToolType.cs b/src/Generated/Models/Responses/InternalToolType.cs
index b413b7c51..cfd98ad1f 100644
--- a/src/Generated/Models/Responses/InternalToolType.cs
+++ b/src/Generated/Models/Responses/InternalToolType.cs
@@ -49,6 +49,8 @@ public InternalToolType(string value)
 
         public static implicit operator InternalToolType(string value) => new InternalToolType(value);
 
+        public static implicit operator InternalToolType?(string value) => value == null ? null : new InternalToolType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalToolType other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalWebSearchPreviewToolSearchContextSize.cs b/src/Generated/Models/Responses/InternalWebSearchPreviewToolSearchContextSize.cs
index d44b08995..50770514e 100644
--- a/src/Generated/Models/Responses/InternalWebSearchPreviewToolSearchContextSize.cs
+++ b/src/Generated/Models/Responses/InternalWebSearchPreviewToolSearchContextSize.cs
@@ -34,6 +34,8 @@ public InternalWebSearchPreviewToolSearchContextSize(string value)
 
         public static implicit operator InternalWebSearchPreviewToolSearchContextSize(string value) => new InternalWebSearchPreviewToolSearchContextSize(value);
 
+        public static implicit operator InternalWebSearchPreviewToolSearchContextSize?(string value) => value == null ? null : new InternalWebSearchPreviewToolSearchContextSize(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalWebSearchPreviewToolSearchContextSize other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/InternalWebSearchUserLocationKind.cs b/src/Generated/Models/Responses/InternalWebSearchUserLocationKind.cs
index 7fe88c3ec..01ab23e5c 100644
--- a/src/Generated/Models/Responses/InternalWebSearchUserLocationKind.cs
+++ b/src/Generated/Models/Responses/InternalWebSearchUserLocationKind.cs
@@ -28,6 +28,8 @@ public InternalWebSearchUserLocationKind(string value)
 
         public static implicit operator InternalWebSearchUserLocationKind(string value) => new InternalWebSearchUserLocationKind(value);
 
+        public static implicit operator InternalWebSearchUserLocationKind?(string value) => value == null ? null : new InternalWebSearchUserLocationKind(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalWebSearchUserLocationKind other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/ResponseErrorCode.cs b/src/Generated/Models/Responses/ResponseErrorCode.cs
index ec3223546..c03de0a41 100644
--- a/src/Generated/Models/Responses/ResponseErrorCode.cs
+++ b/src/Generated/Models/Responses/ResponseErrorCode.cs
@@ -81,6 +81,8 @@ public ResponseErrorCode(string value)
 
         public static implicit operator ResponseErrorCode(string value) => new ResponseErrorCode(value);
 
+        public static implicit operator ResponseErrorCode?(string value) => value == null ? null : new ResponseErrorCode(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ResponseErrorCode other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/ResponseImageDetailLevel.cs b/src/Generated/Models/Responses/ResponseImageDetailLevel.cs
index 0348fa08a..0ea5cb39c 100644
--- a/src/Generated/Models/Responses/ResponseImageDetailLevel.cs
+++ b/src/Generated/Models/Responses/ResponseImageDetailLevel.cs
@@ -36,6 +36,8 @@ public ResponseImageDetailLevel(string value)
 
         public static implicit operator ResponseImageDetailLevel(string value) => new ResponseImageDetailLevel(value);
 
+        public static implicit operator ResponseImageDetailLevel?(string value) => value == null ? null : new ResponseImageDetailLevel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ResponseImageDetailLevel other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/ResponseIncompleteStatusReason.cs b/src/Generated/Models/Responses/ResponseIncompleteStatusReason.cs
index 646bed150..662296dc6 100644
--- a/src/Generated/Models/Responses/ResponseIncompleteStatusReason.cs
+++ b/src/Generated/Models/Responses/ResponseIncompleteStatusReason.cs
@@ -33,6 +33,8 @@ public ResponseIncompleteStatusReason(string value)
 
         public static implicit operator ResponseIncompleteStatusReason(string value) => new ResponseIncompleteStatusReason(value);
 
+        public static implicit operator ResponseIncompleteStatusReason?(string value) => value == null ? null : new ResponseIncompleteStatusReason(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ResponseIncompleteStatusReason other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/ResponseReasoningEffortLevel.cs b/src/Generated/Models/Responses/ResponseReasoningEffortLevel.cs
index 08c27d9b5..4fedd2456 100644
--- a/src/Generated/Models/Responses/ResponseReasoningEffortLevel.cs
+++ b/src/Generated/Models/Responses/ResponseReasoningEffortLevel.cs
@@ -36,6 +36,8 @@ public ResponseReasoningEffortLevel(string value)
 
         public static implicit operator ResponseReasoningEffortLevel(string value) => new ResponseReasoningEffortLevel(value);
 
+        public static implicit operator ResponseReasoningEffortLevel?(string value) => value == null ? null : new ResponseReasoningEffortLevel(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ResponseReasoningEffortLevel other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/ResponseReasoningSummaryVerbosity.cs b/src/Generated/Models/Responses/ResponseReasoningSummaryVerbosity.cs
index 58a48a0c6..c7093172d 100644
--- a/src/Generated/Models/Responses/ResponseReasoningSummaryVerbosity.cs
+++ b/src/Generated/Models/Responses/ResponseReasoningSummaryVerbosity.cs
@@ -36,6 +36,8 @@ public ResponseReasoningSummaryVerbosity(string value)
 
         public static implicit operator ResponseReasoningSummaryVerbosity(string value) => new ResponseReasoningSummaryVerbosity(value);
 
+        public static implicit operator ResponseReasoningSummaryVerbosity?(string value) => value == null ? null : new ResponseReasoningSummaryVerbosity(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ResponseReasoningSummaryVerbosity other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/ResponseTruncationMode.cs b/src/Generated/Models/Responses/ResponseTruncationMode.cs
index 8141123ee..bb4db2703 100644
--- a/src/Generated/Models/Responses/ResponseTruncationMode.cs
+++ b/src/Generated/Models/Responses/ResponseTruncationMode.cs
@@ -33,6 +33,8 @@ public ResponseTruncationMode(string value)
 
         public static implicit operator ResponseTruncationMode(string value) => new ResponseTruncationMode(value);
 
+        public static implicit operator ResponseTruncationMode?(string value) => value == null ? null : new ResponseTruncationMode(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is ResponseTruncationMode other && Equals(other);
 
diff --git a/src/Generated/Models/Responses/WebSearchContextSize.cs b/src/Generated/Models/Responses/WebSearchContextSize.cs
index 8a99324ed..f7db2a219 100644
--- a/src/Generated/Models/Responses/WebSearchContextSize.cs
+++ b/src/Generated/Models/Responses/WebSearchContextSize.cs
@@ -36,6 +36,8 @@ public WebSearchContextSize(string value)
 
         public static implicit operator WebSearchContextSize(string value) => new WebSearchContextSize(value);
 
+        public static implicit operator WebSearchContextSize?(string value) => value == null ? null : new WebSearchContextSize(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is WebSearchContextSize other && Equals(other);
 
diff --git a/src/Generated/Models/VectorStores/InternalChunkingStrategyRequestParamType.cs b/src/Generated/Models/VectorStores/InternalChunkingStrategyRequestParamType.cs
index 9048bf279..bd388a4bf 100644
--- a/src/Generated/Models/VectorStores/InternalChunkingStrategyRequestParamType.cs
+++ b/src/Generated/Models/VectorStores/InternalChunkingStrategyRequestParamType.cs
@@ -31,6 +31,8 @@ public InternalChunkingStrategyRequestParamType(string value)
 
         public static implicit operator InternalChunkingStrategyRequestParamType(string value) => new InternalChunkingStrategyRequestParamType(value);
 
+        public static implicit operator InternalChunkingStrategyRequestParamType?(string value) => value == null ? null : new InternalChunkingStrategyRequestParamType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalChunkingStrategyRequestParamType other && Equals(other);
 
diff --git a/src/Generated/Models/VectorStores/InternalChunkingStrategyResponseParamType.cs b/src/Generated/Models/VectorStores/InternalChunkingStrategyResponseParamType.cs
index 927c85292..e34367a8d 100644
--- a/src/Generated/Models/VectorStores/InternalChunkingStrategyResponseParamType.cs
+++ b/src/Generated/Models/VectorStores/InternalChunkingStrategyResponseParamType.cs
@@ -31,6 +31,8 @@ public InternalChunkingStrategyResponseParamType(string value)
 
         public static implicit operator InternalChunkingStrategyResponseParamType(string value) => new InternalChunkingStrategyResponseParamType(value);
 
+        public static implicit operator InternalChunkingStrategyResponseParamType?(string value) => value == null ? null : new InternalChunkingStrategyResponseParamType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalChunkingStrategyResponseParamType other && Equals(other);
 
diff --git a/src/Generated/Models/VectorStores/InternalDotNetCombinedChunkingStrategyParamType.cs b/src/Generated/Models/VectorStores/InternalDotNetCombinedChunkingStrategyParamType.cs
index b13405b89..cf36e94ed 100644
--- a/src/Generated/Models/VectorStores/InternalDotNetCombinedChunkingStrategyParamType.cs
+++ b/src/Generated/Models/VectorStores/InternalDotNetCombinedChunkingStrategyParamType.cs
@@ -34,6 +34,8 @@ public InternalDotNetCombinedChunkingStrategyParamType(string value)
 
         public static implicit operator InternalDotNetCombinedChunkingStrategyParamType(string value) => new InternalDotNetCombinedChunkingStrategyParamType(value);
 
+        public static implicit operator InternalDotNetCombinedChunkingStrategyParamType?(string value) => value == null ? null : new InternalDotNetCombinedChunkingStrategyParamType(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalDotNetCombinedChunkingStrategyParamType other && Equals(other);
 
diff --git a/src/Generated/Models/VectorStores/InternalVectorStoreSearchRequestRankingOptionsRanker.cs b/src/Generated/Models/VectorStores/InternalVectorStoreSearchRequestRankingOptionsRanker.cs
index 631d10865..e47dfddc2 100644
--- a/src/Generated/Models/VectorStores/InternalVectorStoreSearchRequestRankingOptionsRanker.cs
+++ b/src/Generated/Models/VectorStores/InternalVectorStoreSearchRequestRankingOptionsRanker.cs
@@ -31,6 +31,8 @@ public InternalVectorStoreSearchRequestRankingOptionsRanker(string value)
 
         public static implicit operator InternalVectorStoreSearchRequestRankingOptionsRanker(string value) => new InternalVectorStoreSearchRequestRankingOptionsRanker(value);
 
+        public static implicit operator InternalVectorStoreSearchRequestRankingOptionsRanker?(string value) => value == null ? null : new InternalVectorStoreSearchRequestRankingOptionsRanker(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is InternalVectorStoreSearchRequestRankingOptionsRanker other && Equals(other);
 
diff --git a/src/Generated/Models/VectorStores/VectorStoreBatchFileJobStatus.cs b/src/Generated/Models/VectorStores/VectorStoreBatchFileJobStatus.cs
index 7ed990a80..608731d5c 100644
--- a/src/Generated/Models/VectorStores/VectorStoreBatchFileJobStatus.cs
+++ b/src/Generated/Models/VectorStores/VectorStoreBatchFileJobStatus.cs
@@ -39,6 +39,8 @@ public VectorStoreBatchFileJobStatus(string value)
 
         public static implicit operator VectorStoreBatchFileJobStatus(string value) => new VectorStoreBatchFileJobStatus(value);
 
+        public static implicit operator VectorStoreBatchFileJobStatus?(string value) => value == null ? null : new VectorStoreBatchFileJobStatus(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is VectorStoreBatchFileJobStatus other && Equals(other);
 
diff --git a/src/Generated/Models/VectorStores/VectorStoreCollectionOrder.cs b/src/Generated/Models/VectorStores/VectorStoreCollectionOrder.cs
index cf2387da5..f551a974e 100644
--- a/src/Generated/Models/VectorStores/VectorStoreCollectionOrder.cs
+++ b/src/Generated/Models/VectorStores/VectorStoreCollectionOrder.cs
@@ -29,6 +29,8 @@ public VectorStoreCollectionOrder(string value)
 
         public static implicit operator VectorStoreCollectionOrder(string value) => new VectorStoreCollectionOrder(value);
 
+        public static implicit operator VectorStoreCollectionOrder?(string value) => value == null ? null : new VectorStoreCollectionOrder(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is VectorStoreCollectionOrder other && Equals(other);
 
diff --git a/src/Generated/Models/VectorStores/VectorStoreFileAssociationErrorCode.cs b/src/Generated/Models/VectorStores/VectorStoreFileAssociationErrorCode.cs
index 12b9ae9b8..4333806a3 100644
--- a/src/Generated/Models/VectorStores/VectorStoreFileAssociationErrorCode.cs
+++ b/src/Generated/Models/VectorStores/VectorStoreFileAssociationErrorCode.cs
@@ -36,6 +36,8 @@ public VectorStoreFileAssociationErrorCode(string value)
 
         public static implicit operator VectorStoreFileAssociationErrorCode(string value) => new VectorStoreFileAssociationErrorCode(value);
 
+        public static implicit operator VectorStoreFileAssociationErrorCode?(string value) => value == null ? null : new VectorStoreFileAssociationErrorCode(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is VectorStoreFileAssociationErrorCode other && Equals(other);
 
diff --git a/src/Generated/Models/VectorStores/VectorStoreFileStatusFilter.cs b/src/Generated/Models/VectorStores/VectorStoreFileStatusFilter.cs
index b9469d629..9c3fd2ce3 100644
--- a/src/Generated/Models/VectorStores/VectorStoreFileStatusFilter.cs
+++ b/src/Generated/Models/VectorStores/VectorStoreFileStatusFilter.cs
@@ -39,6 +39,8 @@ public VectorStoreFileStatusFilter(string value)
 
         public static implicit operator VectorStoreFileStatusFilter(string value) => new VectorStoreFileStatusFilter(value);
 
+        public static implicit operator VectorStoreFileStatusFilter?(string value) => value == null ? null : new VectorStoreFileStatusFilter(value);
+
         [EditorBrowsable(EditorBrowsableState.Never)]
         public override bool Equals(object obj) => obj is VectorStoreFileStatusFilter other && Equals(other);