added .Model properties to clients that store it currently as a private filed

Author: KrzysztofCwalina

src/Custom/Audio/AudioClient.cs

@@ -88,6 +88,11 @@ protected internal AudioClient(ClientPipeline pipeline, string model, OpenAIClie
         _endpoint = OpenAIClient.GetEndpoint(options);
     }
 
+    /// <summary>
+    /// Gets the name of the model used in requests sent to the service.
+    /// </summary>
+    public string Model => _model;
+
     #region GenerateSpeech
 
     /// <summary> Generates a life-like, spoken audio recording of the input text. </summary>

src/Custom/Chat/ChatClient.cs

@@ -102,6 +102,11 @@ protected internal ChatClient(ClientPipeline pipeline, string model, OpenAIClien
         _telemetry = new OpenTelemetrySource(model, _endpoint);
     }
 
+    /// <summary>
+    /// Gets the name of the model used in requests sent to the service.
+    /// </summary>
+    public string Model => _model;
+
     /// <summary> Generates a completion for the given chat. </summary>
     /// <param name="messages"> The messages comprising the chat so far. </param>
     /// <param name="options"> The options to configure the chat completion. </param>

src/Custom/Embeddings/EmbeddingClient.cs

@@ -89,6 +89,11 @@ protected internal EmbeddingClient(ClientPipeline pipeline, string model, OpenAI
         _endpoint = OpenAIClient.GetEndpoint(options);
     }
 
+    /// <summary>
+    /// Gets the name of the model used in requests sent to the service.
+    /// </summary>
+    public string Model => _model;
+
     // CUSTOM: Added to simplify generating a single embedding from a string input.
     /// <summary> Generates an embedding representing the text input. </summary>
     /// <param name="input"> The text input to generate an embedding for. </param>

src/Custom/Images/ImageClient.cs

@@ -86,6 +86,11 @@ protected internal ImageClient(ClientPipeline pipeline, string model, OpenAIClie
         Pipeline = pipeline;
         _endpoint = OpenAIClient.GetEndpoint(options);
     }
+    
+    /// <summary>
+    /// Gets the name of the model used in requests sent to the service.
+    /// </summary>
+    public string Model => _model;
 
     #region GenerateImages
 

src/Custom/Moderations/ModerationClient.cs

@@ -89,6 +89,11 @@ protected internal ModerationClient(ClientPipeline pipeline, string model, OpenA
         _endpoint = OpenAIClient.GetEndpoint(options);
     }
 
+    /// <summary>
+    /// Gets the name of the model used in requests sent to the service.
+    /// </summary>
+    public string Model => _model;
+
     /// <summary> Classifies if the text input is potentially harmful across several categories. </summary>
     /// <param name="input"> The text input to classify. </param>
     /// <param name="cancellationToken"> A token that can be used to cancel this method call. </param>

src/Custom/Responses/OpenAIResponseClient.cs

@@ -93,6 +93,11 @@ protected internal OpenAIResponseClient(ClientPipeline pipeline, string model, O
         _endpoint = OpenAIClient.GetEndpoint(options);
     }
 
+    /// <summary>
+    /// Gets the name of the model used in requests sent to the service.
+    /// </summary>
+    public string Model => _model;
+
     public virtual async Task<ClientResult<OpenAIResponse>> CreateResponseAsync(IEnumerable<ResponseItem> inputItems, ResponseCreationOptions options = null, CancellationToken cancellationToken = default)
     {
         Argument.AssertNotNullOrEmpty(inputItems, nameof(inputItems));