diff --git a/dotnet/src/Connectors/Connectors.AzureOpenAI.UnitTests/Services/AzureOpenAIChatCompletionServiceTests.cs b/dotnet/src/Connectors/Connectors.AzureOpenAI.UnitTests/Services/AzureOpenAIChatCompletionServiceTests.cs
index a3936414818f..17622af543a3 100644
--- a/dotnet/src/Connectors/Connectors.AzureOpenAI.UnitTests/Services/AzureOpenAIChatCompletionServiceTests.cs
+++ b/dotnet/src/Connectors/Connectors.AzureOpenAI.UnitTests/Services/AzureOpenAIChatCompletionServiceTests.cs
@@ -418,10 +418,11 @@ public async Task GetChatMessageContentsRequestHandlesInternalFieldsCorrectlyAsy
 
     [Theory]
     [InlineData(null, null)]
+    [InlineData("string", "none")]
+    [InlineData("string", "minimal")]
     [InlineData("string", "low")]
     [InlineData("string", "medium")]
     [InlineData("string", "high")]
-    [InlineData("string", "minimal")]
     [InlineData("ChatReasonEffortLevel.Low", "low")]
     [InlineData("ChatReasonEffortLevel.Medium", "medium")]
     [InlineData("ChatReasonEffortLevel.High", "high")]
diff --git a/dotnet/src/Connectors/Connectors.OpenAI.UnitTests/Services/OpenAIChatCompletionServiceTests.cs b/dotnet/src/Connectors/Connectors.OpenAI.UnitTests/Services/OpenAIChatCompletionServiceTests.cs
index 397c9bb0e39d..f62a04c641b7 100644
--- a/dotnet/src/Connectors/Connectors.OpenAI.UnitTests/Services/OpenAIChatCompletionServiceTests.cs
+++ b/dotnet/src/Connectors/Connectors.OpenAI.UnitTests/Services/OpenAIChatCompletionServiceTests.cs
@@ -1007,10 +1007,11 @@ public async Task GetChatMessageInResponseFormatsAsync(string formatType, string
 
     [Theory]
     [InlineData(null, null)]
+    [InlineData("string", "none")]
+    [InlineData("string", "minimal")]
     [InlineData("string", "low")]
     [InlineData("string", "medium")]
     [InlineData("string", "high")]
-    [InlineData("string", "minimal")]
     [InlineData("ChatReasonEffortLevel.Low", "low")]
     [InlineData("ChatReasonEffortLevel.Medium", "medium")]
     [InlineData("ChatReasonEffortLevel.High", "high")]
diff --git a/dotnet/src/Connectors/Connectors.OpenAI/Core/ClientCore.ChatCompletion.cs b/dotnet/src/Connectors/Connectors.OpenAI/Core/ClientCore.ChatCompletion.cs
index 3387601ed189..97da39daf0d6 100644
--- a/dotnet/src/Connectors/Connectors.OpenAI/Core/ClientCore.ChatCompletion.cs
+++ b/dotnet/src/Connectors/Connectors.OpenAI/Core/ClientCore.ChatCompletion.cs
@@ -568,10 +568,11 @@ protected virtual ChatCompletionOptions CreateChatCompletionOptions(
         {
             return textEffortLevel.ToUpperInvariant() switch
             {
+                "NONE" => new("none"),
+                "MINIMAL" => ChatReasoningEffortLevel.Minimal,
                 "LOW" => ChatReasoningEffortLevel.Low,
                 "MEDIUM" => ChatReasoningEffortLevel.Medium,
                 "HIGH" => ChatReasoningEffortLevel.High,
-                "MINIMAL" => new("minimal"),
                 _ => throw new NotSupportedException($"The provided reasoning effort '{textEffortLevel}' is not supported.")
             };
         }
diff --git a/dotnet/src/Connectors/Connectors.OpenAI/Settings/OpenAIPromptExecutionSettings.cs b/dotnet/src/Connectors/Connectors.OpenAI/Settings/OpenAIPromptExecutionSettings.cs
index 5824fe412f84..e8406758210e 100644
--- a/dotnet/src/Connectors/Connectors.OpenAI/Settings/OpenAIPromptExecutionSettings.cs
+++ b/dotnet/src/Connectors/Connectors.OpenAI/Settings/OpenAIPromptExecutionSettings.cs
@@ -26,7 +26,7 @@ public class OpenAIPromptExecutionSettings : PromptExecutionSettings
     /// Constrains effort on reasoning for reasoning models.
     /// Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response.
     /// Possible values are:
-    /// <para>- <see cref="string"/> values: <c>"low"</c>, <c>"medium"</c>, <c>"high"</c>, <c>"minimal"</c>;</para>
+    /// <para>- <see cref="string"/> values:<c>"none"</c>, <c>"minimal"</c>, <c>"low"</c>, <c>"medium"</c>, <c>"high"</c>;</para>
     /// <para>- <see cref="ChatReasoningEffortLevel"/> object;</para>
     /// </remarks>
     [JsonPropertyName("reasoning_effort")]