diff --git a/app/MindWork AI Studio/Provider/Anthropic/ChatRequest.cs b/app/MindWork AI Studio/Provider/Anthropic/ChatRequest.cs
index 0402fc3c..cacca360 100644
--- a/app/MindWork AI Studio/Provider/Anthropic/ChatRequest.cs	
+++ b/app/MindWork AI Studio/Provider/Anthropic/ChatRequest.cs	
@@ -1,4 +1,3 @@
-using System.Text.Json;
 using System.Text.Json.Serialization;
 using AIStudio.Provider.OpenAI;
 
diff --git a/app/MindWork AI Studio/Provider/OpenAI/ProviderOpenAI.cs b/app/MindWork AI Studio/Provider/OpenAI/ProviderOpenAI.cs
index a3d90989..2ea2ff45 100644
--- a/app/MindWork AI Studio/Provider/OpenAI/ProviderOpenAI.cs	
+++ b/app/MindWork AI Studio/Provider/OpenAI/ProviderOpenAI.cs	
@@ -63,7 +63,7 @@ public sealed class ProviderOpenAI() : BaseProvider("https://api.openai.com/v1/"
         };
 
         // Read the model capabilities:
-        var modelCapabilities = Settings.ProviderExtensions.GetModelCapabilitiesOpenAI(chatModel);
+        var modelCapabilities = ProviderExtensions.GetModelCapabilitiesOpenAI(chatModel);
         
         // Check if we are using the Responses API or the Chat Completion API:
         var usingResponsesAPI = modelCapabilities.Contains(Capability.RESPONSES_API);