diff --git a/src/Plugins/BotSharp.Plugin.AzureOpenAI/Providers/Chat/ChatCompletionProvider.cs b/src/Plugins/BotSharp.Plugin.AzureOpenAI/Providers/Chat/ChatCompletionProvider.cs
index 3384e3b7..a1684c9d 100644
--- a/src/Plugins/BotSharp.Plugin.AzureOpenAI/Providers/Chat/ChatCompletionProvider.cs
+++ b/src/Plugins/BotSharp.Plugin.AzureOpenAI/Providers/Chat/ChatCompletionProvider.cs
@@ -290,20 +290,20 @@ public class ChatCompletionProvider : IChatCompletion
                         if (!string.IsNullOrEmpty(file.FileData))
                         {
                             var (contentType, bytes) = FileUtility.GetFileInfoFromData(file.FileData);
-                            var contentPart = ChatMessageContentPart.CreateImagePart(BinaryData.FromBytes(bytes), contentType, ChatImageDetailLevel.Low);
+                            var contentPart = ChatMessageContentPart.CreateImagePart(BinaryData.FromBytes(bytes), contentType, ChatImageDetailLevel.Auto);
                             contentParts.Add(contentPart);
                         }
                         else if (!string.IsNullOrEmpty(file.FileStorageUrl))
                         {
                             var contentType = FileUtility.GetFileContentType(file.FileStorageUrl);
                             var bytes = fileStorage.GetFileBytes(file.FileStorageUrl);
-                            var contentPart = ChatMessageContentPart.CreateImagePart(BinaryData.FromBytes(bytes), contentType, ChatImageDetailLevel.Low);
+                            var contentPart = ChatMessageContentPart.CreateImagePart(BinaryData.FromBytes(bytes), contentType, ChatImageDetailLevel.Auto);
                             contentParts.Add(contentPart);
                         }
                         else if (!string.IsNullOrEmpty(file.FileUrl))
                         {
                             var uri = new Uri(file.FileUrl);
-                            var contentPart = ChatMessageContentPart.CreateImagePart(uri, ChatImageDetailLevel.Low);
+                            var contentPart = ChatMessageContentPart.CreateImagePart(uri, ChatImageDetailLevel.Auto);
                             contentParts.Add(contentPart);
                         }
                     }
diff --git a/src/Plugins/BotSharp.Plugin.OpenAI/Providers/Chat/ChatCompletionProvider.cs b/src/Plugins/BotSharp.Plugin.OpenAI/Providers/Chat/ChatCompletionProvider.cs
index 50151513..c5d45f66 100644
--- a/src/Plugins/BotSharp.Plugin.OpenAI/Providers/Chat/ChatCompletionProvider.cs
+++ b/src/Plugins/BotSharp.Plugin.OpenAI/Providers/Chat/ChatCompletionProvider.cs
@@ -268,20 +268,20 @@ public class ChatCompletionProvider : IChatCompletion
                         if (!string.IsNullOrEmpty(file.FileData))
                         {
                             var (contentType, bytes) = FileUtility.GetFileInfoFromData(file.FileData);
-                            var contentPart = ChatMessageContentPart.CreateImagePart(BinaryData.FromBytes(bytes), contentType, ChatImageDetailLevel.Low);
+                            var contentPart = ChatMessageContentPart.CreateImagePart(BinaryData.FromBytes(bytes), contentType, ChatImageDetailLevel.Auto);
                             contentParts.Add(contentPart);
                         }
                         else if (!string.IsNullOrEmpty(file.FileStorageUrl))
                         {
                             var contentType = FileUtility.GetFileContentType(file.FileStorageUrl);
                             var bytes = fileStorage.GetFileBytes(file.FileStorageUrl);
-                            var contentPart = ChatMessageContentPart.CreateImagePart(BinaryData.FromBytes(bytes), contentType, ChatImageDetailLevel.Low);
+                            var contentPart = ChatMessageContentPart.CreateImagePart(BinaryData.FromBytes(bytes), contentType, ChatImageDetailLevel.Auto);
                             contentParts.Add(contentPart);
                         }
                         else if (!string.IsNullOrEmpty(file.FileUrl))
                         {
                             var uri = new Uri(file.FileUrl);
-                            var contentPart = ChatMessageContentPart.CreateImagePart(uri, ChatImageDetailLevel.Low);
+                            var contentPart = ChatMessageContentPart.CreateImagePart(uri, ChatImageDetailLevel.Auto);
                             contentParts.Add(contentPart);
                         }
                     }
diff --git a/src/Plugins/BotSharp.Plugin.OpenAI/Providers/ProviderHelper.cs b/src/Plugins/BotSharp.Plugin.OpenAI/Providers/ProviderHelper.cs
index 7ab56b5d..b385b380 100644
--- a/src/Plugins/BotSharp.Plugin.OpenAI/Providers/ProviderHelper.cs
+++ b/src/Plugins/BotSharp.Plugin.OpenAI/Providers/ProviderHelper.cs
@@ -9,10 +9,8 @@ public class ProviderHelper
     {
         var settingsService = services.GetRequiredService<ILlmProviderService>();
         var settings = settingsService.GetSetting(provider, model);
-        var options = string.IsNullOrEmpty(settings.Endpoint)
-            ? null
-            : new OpenAIClientOptions { Endpoint = new Uri(settings.Endpoint) };
-        return new OpenAIClient(new ApiKeyCredential(settings.ApiKey), options);
+        var client = new OpenAIClient(new ApiKeyCredential(settings.ApiKey));
+        return client;
     }
 
     public static List<RoleDialogModel> GetChatSamples(List<string> lines)