Replace external OpenAI DTO dependencies with internal SDK types

samples/cs/Directory.Packages.props

@@ -7,7 +7,6 @@
   <ItemGroup>
     <PackageVersion Include="Microsoft.AI.Foundry.Local" Version="0.9.0-dev" />
     <PackageVersion Include="Microsoft.AI.Foundry.Local.WinML" Version="0.9.0-dev-20260324" />
-    <PackageVersion Include="Betalgo.Ranul.OpenAI" Version="9.1.1" />
     <PackageVersion Include="Microsoft.Extensions.Logging" Version="9.0.10" />
     <PackageVersion Include="Microsoft.Extensions.Logging.Console" Version="9.0.10" />
     <PackageVersion Include="NAudio" Version="2.2.1" />

samples/cs/model-management-example/Program.cs

@@ -1,5 +1,5 @@
 using Microsoft.AI.Foundry.Local;
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
+using Microsoft.AI.Foundry.Local.OpenAI;
 using System.Diagnostics;
 
 CancellationToken ct = new CancellationToken();
@@ -123,7 +123,7 @@
 var streamingResponse = chatClient.CompleteChatStreamingAsync(messages, ct);
 await foreach (var chunk in streamingResponse)
 {
     Console.Write(chunk.Choices[0].Message.Content);
     Console.Out.Flush();
 }
 Console.WriteLine();

samples/cs/native-chat-completions/Program.cs

@@ -1,7 +1,7 @@
 // <complete_code>
 // <imports>
 using Microsoft.AI.Foundry.Local;
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
+using Microsoft.AI.Foundry.Local.OpenAI;
 // </imports>
 
 // <init>
@@ -98,7 +98,7 @@
 var streamingResponse = chatClient.CompleteChatStreamingAsync(messages, ct);
 await foreach (var chunk in streamingResponse)
 {
     Console.Write(chunk.Choices[0].Message.Content);
     Console.Out.Flush();
 }
 Console.WriteLine();

samples/cs/tool-calling-foundry-local-sdk/Program.cs

@@ -1,9 +1,7 @@
 // <complete_code>
 // <imports>
 using Microsoft.AI.Foundry.Local;
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
-using Betalgo.Ranul.OpenAI.ObjectModels.ResponseModels;
-using Betalgo.Ranul.OpenAI.ObjectModels.SharedModels;
+using Microsoft.AI.Foundry.Local.OpenAI;
 using System.Text.Json;
 // </imports>
 
@@ -104,7 +102,7 @@
 var streamingResponse = chatClient.CompleteChatStreamingAsync(messages, tools, ct);
 await foreach (var chunk in streamingResponse)
 {
     var content = chunk.Choices[0].Message.Content;
     Console.Write(content);
     Console.Out.Flush();
 
@@ -119,7 +117,7 @@
 // Invoke tools called and append responses to the chat
 foreach (var chunk in toolCallResponses)
 {
     var call = chunk?.Choices[0].Message.ToolCalls?[0].FunctionCall;
     if (call?.Name == "multiply_numbers")
     {
         var arguments = JsonSerializer.Deserialize<Dictionary<string, int>>(call.Arguments!)!;
@@ -155,7 +153,7 @@
 streamingResponse = chatClient.CompleteChatStreamingAsync(messages, tools, ct);
 await foreach (var chunk in streamingResponse)
 {
     var content = chunk.Choices[0].Message.Content;
     Console.Write(content);
     Console.Out.Flush();
 }

samples/cs/tutorial-chat-assistant/Program.cs

@@ -1,7 +1,7 @@
 // <complete_code>
 // <imports>
 using Microsoft.AI.Foundry.Local;
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
+using Microsoft.AI.Foundry.Local.OpenAI;
 using Microsoft.Extensions.Logging;
 // </imports>
 

samples/cs/tutorial-chat-assistant/TutorialChatAssistant.csproj

@@ -42,7 +42,6 @@
 
   <!-- Packages -->
   <ItemGroup>
-    <PackageReference Include="Betalgo.Ranul.OpenAI" />
     <PackageReference Include="Microsoft.Extensions.Logging" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" />
   </ItemGroup>

samples/cs/tutorial-document-summarizer/Program.cs

@@ -1,7 +1,7 @@
 // <complete_code>
 // <imports>
 using Microsoft.AI.Foundry.Local;
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
+using Microsoft.AI.Foundry.Local.OpenAI;
 using Microsoft.Extensions.Logging;
 // </imports>
 

samples/cs/tutorial-document-summarizer/TutorialDocumentSummarizer.csproj

@@ -42,7 +42,6 @@
 
   <!-- Packages -->
   <ItemGroup>
-    <PackageReference Include="Betalgo.Ranul.OpenAI" />
     <PackageReference Include="Microsoft.Extensions.Logging" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" />
   </ItemGroup>

samples/cs/tutorial-tool-calling/Program.cs

@@ -2,9 +2,7 @@
 // <imports>
 using System.Text.Json;
 using Microsoft.AI.Foundry.Local;
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
-using Betalgo.Ranul.OpenAI.ObjectModels.ResponseModels;
-using Betalgo.Ranul.OpenAI.ObjectModels.SharedModels;
+using Microsoft.AI.Foundry.Local.OpenAI;
 using Microsoft.Extensions.Logging;
 // </imports>
 
@@ -175,21 +173,21 @@
 
     var choice = response.Choices[0].Message;
 
     if (choice.ToolCalls is { Count: > 0 })
     {
         messages.Add(choice);
 
         foreach (var toolCall in choice.ToolCalls)
         {
             var toolArgs = JsonDocument.Parse(
                 toolCall.FunctionCall.Arguments
             ).RootElement;
             Console.WriteLine(
                 $"  Tool call: {toolCall.FunctionCall.Name}({toolArgs})"
             );
 
             var result = ExecuteTool(
                 toolCall.FunctionCall.Name, toolArgs
             );
             messages.Add(new ChatMessage
             {
@@ -202,7 +200,7 @@
         var finalResponse = await chatClient.CompleteChatAsync(
             messages, tools, ct
         );
         var answer = finalResponse.Choices[0].Message.Content ?? "";
         messages.Add(new ChatMessage
         {
             Role = "assistant",

samples/cs/tutorial-tool-calling/TutorialToolCalling.csproj

@@ -42,7 +42,6 @@
 
   <!-- Packages -->
   <ItemGroup>
-    <PackageReference Include="Betalgo.Ranul.OpenAI" />
     <PackageReference Include="Microsoft.Extensions.Logging" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" />
   </ItemGroup>

samples/cs/tutorial-voice-to-text/Program.cs

@@ -1,7 +1,7 @@
 // <complete_code>
 // <imports>
 using Microsoft.AI.Foundry.Local;
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
+using Microsoft.AI.Foundry.Local.OpenAI;
 using Microsoft.Extensions.Logging;
 using System.Text;
 // </imports>

samples/cs/tutorial-voice-to-text/TutorialVoiceToText.csproj

@@ -42,7 +42,6 @@
 
   <!-- Packages -->
   <ItemGroup>
-    <PackageReference Include="Betalgo.Ranul.OpenAI" />
     <PackageReference Include="Microsoft.Extensions.Logging" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" />
   </ItemGroup>

sdk/cs/README.md

@@ -109,7 +109,7 @@ Catalog access no longer blocks on EP downloads. Call `DownloadAndRegisterEpsAsy
 using Microsoft.AI.Foundry.Local;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Logging.Abstractions;
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
+using Microsoft.AI.Foundry.Local.OpenAI;
 
 // 1. Initialize the singleton manager
 await FoundryLocalManager.CreateAsync(
@@ -276,7 +276,7 @@ audioClient.Settings.Temperature = 0.0f;
 
 For real-time microphone-to-text transcription, use `CreateLiveTranscriptionSession()`. Audio is pushed as raw PCM chunks and transcription results stream back as an `IAsyncEnumerable`.
 
-The streaming result type (`LiveAudioTranscriptionResponse`) extends `ConversationItem` from the Betalgo OpenAI SDK's Realtime models, so it's compatible with the OpenAI Realtime API pattern. Access transcribed text via `result.Content[0].Text` or `result.Content[0].Transcript`.
+The streaming result type (`LiveAudioTranscriptionResponse`) extends `ConversationItem`, which is compatible with the OpenAI Realtime API pattern. Access transcribed text via `result.Content[0].Text` or `result.Content[0].Transcript`.
 
 ```csharp
 var audioClient = await model.GetAudioClientAsync();

sdk/cs/docs/api/microsoft.ai.foundry.local.openaiaudioclient.md

@@ -3,7 +3,6 @@
 Namespace: Microsoft.AI.Foundry.Local
 
 Audio Client that uses the OpenAI API.
- Implemented using Betalgo.Ranul.OpenAI SDK types.
 
 ```csharp
 public class OpenAIAudioClient

sdk/cs/docs/api/microsoft.ai.foundry.local.openaichatclient.md

@@ -3,7 +3,6 @@
 Namespace: Microsoft.AI.Foundry.Local
 
 Chat Client that uses the OpenAI API.
- Implemented using Betalgo.Ranul.OpenAI SDK types.
 
 ```csharp
 public class OpenAIChatClient

sdk/cs/src/Detail/JsonSerializationContext.cs

@@ -10,33 +10,28 @@ namespace Microsoft.AI.Foundry.Local.Detail;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
-using Betalgo.Ranul.OpenAI.ObjectModels.ResponseModels;
-using Betalgo.Ranul.OpenAI.ObjectModels.SharedModels;
-
 using Microsoft.AI.Foundry.Local.OpenAI;
 
 [JsonSerializable(typeof(ModelInfo))]
 [JsonSerializable(typeof(List<ModelInfo>))]
 [JsonSerializable(typeof(CoreInteropRequest))]
-[JsonSerializable(typeof(ChatCompletionCreateRequestExtended))]
+[JsonSerializable(typeof(ChatCompletionCreateRequest))]
 [JsonSerializable(typeof(ChatCompletionCreateResponse))]
 [JsonSerializable(typeof(AudioCreateTranscriptionRequest))]
 [JsonSerializable(typeof(AudioCreateTranscriptionResponse))]
 [JsonSerializable(typeof(string[]))] // list loaded or cached models
 [JsonSerializable(typeof(EpInfo[]))]
 [JsonSerializable(typeof(EpDownloadResult))]
 [JsonSerializable(typeof(JsonElement))]
-[JsonSerializable(typeof(ResponseFormatExtended))]
+[JsonSerializable(typeof(ResponseFormat))]
 [JsonSerializable(typeof(ToolChoice))]
 [JsonSerializable(typeof(ToolDefinition))]
 [JsonSerializable(typeof(IList<ToolDefinition>))]
 [JsonSerializable(typeof(FunctionDefinition))]
 [JsonSerializable(typeof(IList<FunctionDefinition>))]
 [JsonSerializable(typeof(PropertyDefinition))]
 [JsonSerializable(typeof(IList<PropertyDefinition>))]
-// --- Audio streaming types (LiveAudioTranscriptionResponse inherits ConversationItem
-//     which has AOT-incompatible JsonConverters, so we only register the raw deserialization type) ---
+// --- Audio streaming types (we only register the raw deserialization type used by LiveAudioTranscriptionResponse.FromJson) ---
 [JsonSerializable(typeof(LiveAudioTranscriptionRaw))]
 [JsonSerializable(typeof(CoreErrorResponse))]
 [JsonSourceGenerationOptions(DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,

sdk/cs/src/Microsoft.AI.Foundry.Local.csproj

@@ -121,7 +121,6 @@
       <PackageReference Condition="'$(UseWinML)' != 'true'"
                         Include="Microsoft.AI.Foundry.Local.Core" Version="$(FoundryLocalCoreVersion)" />
 
-      <PackageReference Include="Betalgo.Ranul.OpenAI" Version="9.1.0" />
       <PackageReference Include="Microsoft.Extensions.Logging" Version="9.0.9" />
       <!-- specify PrivateAssets to exclude from nuget dependencies -->
       <PackageReference Include="IDisposableAnalyzers" Version="4.0.8" PrivateAssets="all"/>

sdk/cs/src/OpenAI/AudioClient.cs

@@ -8,16 +8,13 @@ namespace Microsoft.AI.Foundry.Local;
 
 using System.Runtime.CompilerServices;
 using System.Threading.Channels;
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
-using Betalgo.Ranul.OpenAI.ObjectModels.ResponseModels;
 
 using Microsoft.AI.Foundry.Local.Detail;
 using Microsoft.AI.Foundry.Local.OpenAI;
 using Microsoft.Extensions.Logging;
 
 /// <summary>
 /// Audio Client that uses the OpenAI API.
-/// Implemented using Betalgo.Ranul.OpenAI SDK types.
 /// </summary>
 public class OpenAIAudioClient
 {
@@ -97,8 +94,7 @@ public LiveAudioTranscriptionSession CreateLiveTranscriptionSession()
     private async Task<AudioCreateTranscriptionResponse> TranscribeAudioImplAsync(string audioFilePath,
                                                                                   CancellationToken? ct)
     {
-        var openaiRequest = AudioTranscriptionCreateRequestExtended.FromUserInput(_modelId, audioFilePath, Settings);
-
+        var openaiRequest = AudioTranscriptionRequestResponseExtensions.CreateAudioRequest(_modelId, audioFilePath, Settings);
 
         var request = new CoreInteropRequest
         {
@@ -120,7 +116,7 @@ private async Task<AudioCreateTranscriptionResponse> TranscribeAudioImplAsync(st
     private async IAsyncEnumerable<AudioCreateTranscriptionResponse> TranscribeAudioStreamingImplAsync(
         string audioFilePath, [EnumeratorCancellation] CancellationToken ct)
     {
-        var openaiRequest = AudioTranscriptionCreateRequestExtended.FromUserInput(_modelId, audioFilePath, Settings);
+        var openaiRequest = AudioTranscriptionRequestResponseExtensions.CreateAudioRequest(_modelId, audioFilePath, Settings);
 
         var request = new CoreInteropRequest
         {

sdk/cs/src/OpenAI/AudioTranscriptionRequestResponseTypes.cs

@@ -8,34 +8,21 @@ namespace Microsoft.AI.Foundry.Local.OpenAI;
 
 using System.Globalization;
 using System.Text.Json;
-using System.Text.Json.Serialization;
-
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
-using Betalgo.Ranul.OpenAI.ObjectModels.ResponseModels;
 
 using Microsoft.AI.Foundry.Local;
 using Microsoft.AI.Foundry.Local.Detail;
-
 using Microsoft.Extensions.Logging;
 
-internal record AudioTranscriptionCreateRequestExtended : AudioCreateTranscriptionRequest
+internal static class AudioTranscriptionRequestResponseExtensions
 {
-    // Valid entries:
-    // int language
-    // int temperature
-    [JsonPropertyName("metadata")]
-    public Dictionary<string, string>? Metadata { get; set; }
-
-    internal static AudioTranscriptionCreateRequestExtended FromUserInput(string modelId,
-                                                                      string audioFilePath,
-                                                                      OpenAIAudioClient.AudioSettings settings)
+    internal static AudioCreateTranscriptionRequest CreateAudioRequest(string modelId,
+                                                                       string audioFilePath,
+                                                                       OpenAIAudioClient.AudioSettings settings)
     {
-        var request = new AudioTranscriptionCreateRequestExtended
+        var request = new AudioCreateTranscriptionRequest
         {
             Model = modelId,
             FileName = audioFilePath,
-
-            // apply our specific settings
             Language = settings.Language,
             Temperature = settings.Temperature
         };
@@ -57,16 +44,14 @@ internal static AudioTranscriptionCreateRequestExtended FromUserInput(string mod
             request.Metadata = metadata;
         }
 
-
         return request;
     }
-}
-internal static class AudioTranscriptionRequestResponseExtensions
-{
+
     internal static string ToJson(this AudioCreateTranscriptionRequest request)
     {
         return JsonSerializer.Serialize(request, JsonSerializationContext.Default.AudioCreateTranscriptionRequest);
     }
+
     internal static AudioCreateTranscriptionResponse ToAudioTranscription(this ICoreInterop.Response response,
                                                                           ILogger logger)
     {

sdk/cs/src/OpenAI/ChatClient.cs

@@ -10,16 +10,12 @@ namespace Microsoft.AI.Foundry.Local;
 using System.Runtime.CompilerServices;
 using System.Threading.Channels;
 
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
-using Betalgo.Ranul.OpenAI.ObjectModels.ResponseModels;
-
 using Microsoft.AI.Foundry.Local.Detail;
 using Microsoft.AI.Foundry.Local.OpenAI;
 using Microsoft.Extensions.Logging;
 
 /// <summary>
 /// Chat Client that uses the OpenAI API.
-/// Implemented using Betalgo.Ranul.OpenAI SDK types.
 /// </summary>
 public class OpenAIChatClient
 {
@@ -48,7 +44,7 @@ public record ChatSettings
         public int? TopK { get; set; }
         public float? TopP { get; set; }
         // Settings for tool calling and structured outputs
-        public ResponseFormatExtended? ResponseFormat { get; set; }
+        public ResponseFormat? ResponseFormat { get; set; }
         public ToolChoice? ToolChoice { get; set; }
     }
 
@@ -132,7 +128,7 @@ private async Task<ChatCompletionCreateResponse> CompleteChatImplAsync(IEnumerab
     {
         Settings.Stream = false;
 
-        var chatRequest = ChatCompletionCreateRequestExtended.FromUserInput(_modelId, messages, tools, Settings);
+        var chatRequest = ChatCompletionsRequestResponseExtensions.CreateChatRequest(_modelId, messages, tools, Settings);
         var chatRequestJson = chatRequest.ToJson();
 
         var request = new CoreInteropRequest { Params = new() { { "OpenAICreateRequest", chatRequestJson } } };
@@ -150,7 +146,7 @@ private async IAsyncEnumerable<ChatCompletionCreateResponse> ChatStreamingImplAs
     {
         Settings.Stream = true;
 
-        var chatRequest = ChatCompletionCreateRequestExtended.FromUserInput(_modelId, messages, tools, Settings);
+        var chatRequest = ChatCompletionsRequestResponseExtensions.CreateChatRequest(_modelId, messages, tools, Settings);
         var chatRequestJson = chatRequest.ToJson();
         var request = new CoreInteropRequest { Params = new() { { "OpenAICreateRequest", chatRequestJson } } };
 

sdk/cs/src/OpenAI/ChatCompletionRequestResponseTypes.cs

@@ -8,48 +8,30 @@ namespace Microsoft.AI.Foundry.Local.OpenAI;
 
 using System.Globalization;
 using System.Text.Json;
-using System.Text.Json.Serialization;
-
-using Betalgo.Ranul.OpenAI.ObjectModels.RequestModels;
-using Betalgo.Ranul.OpenAI.ObjectModels.ResponseModels;
 
 using Microsoft.AI.Foundry.Local;
 using Microsoft.AI.Foundry.Local.Detail;
 using Microsoft.Extensions.Logging;
 
-// https://platform.openai.com/docs/api-reference/chat/create
-// Using the Betalgo ChatCompletionCreateRequest and extending with the `metadata` field for additional parameters
-// which is part of the OpenAI spec but for some reason not part of the Betalgo request object.
-internal class ChatCompletionCreateRequestExtended : ChatCompletionCreateRequest
+internal static class ChatCompletionsRequestResponseExtensions
 {
-    // Valid entries:
-    // int top_k
-    // int random_seed
-    [JsonPropertyName("metadata")]
-    public Dictionary<string, string>? Metadata { get; set; }
-
-    [JsonPropertyName("response_format")]
-    public new ResponseFormatExtended? ResponseFormat { get; set; }
-
-    internal static ChatCompletionCreateRequestExtended FromUserInput(string modelId,
-                                                                      IEnumerable<ChatMessage> messages,
-                                                                      IEnumerable<ToolDefinition>? tools,
-                                                                      OpenAIChatClient.ChatSettings settings)
+    internal static ChatCompletionCreateRequest CreateChatRequest(string modelId,
+                                                                   IEnumerable<ChatMessage> messages,
+                                                                   IEnumerable<ToolDefinition>? tools,
+                                                                   OpenAIChatClient.ChatSettings settings)
     {
-        var request = new ChatCompletionCreateRequestExtended
+        var request = new ChatCompletionCreateRequest
         {
             Model = modelId,
             Messages = messages.ToList(),
             Tools = tools?.ToList(),
-            // Apply our specific settings
             FrequencyPenalty = settings.FrequencyPenalty,
             MaxTokens = settings.MaxTokens,
             N = settings.N,
             Temperature = settings.Temperature,
             PresencePenalty = settings.PresencePenalty,
             Stream = settings.Stream,
             TopP = settings.TopP,
-            // Apply tool calling and structured output settings
             ResponseFormat = settings.ResponseFormat,
             ToolChoice = settings.ToolChoice
         };
@@ -71,16 +53,12 @@ internal static ChatCompletionCreateRequestExtended FromUserInput(string modelId
             request.Metadata = metadata;
         }
 
-
         return request;
     }
-}
 
-internal static class ChatCompletionsRequestResponseExtensions
-{
-    internal static string ToJson(this ChatCompletionCreateRequestExtended request)
+    internal static string ToJson(this ChatCompletionCreateRequest request)
     {
-        return JsonSerializer.Serialize(request, JsonSerializationContext.Default.ChatCompletionCreateRequestExtended);
+        return JsonSerializer.Serialize(request, JsonSerializationContext.Default.ChatCompletionCreateRequest);
     }
 
     internal static ChatCompletionCreateResponse ToChatCompletion(this ICoreInterop.Response response, ILogger logger)