Merge pull request #1180 from hchen2020/master

skip file selection if there is only 1 image.

Author: Oceania2018

src/Infrastructure/BotSharp.Core/Files/Services/Instruct/FileInstructService.Image.cs

@@ -49,7 +49,7 @@ public async Task<RoleDialogModel> GenerateImage(string text, InstructOptions? o
         var instruction = await GetAgentTemplate(innerAgentId, options?.TemplateName);
 
         var textContent = text.IfNullOrEmptyAs(instruction).IfNullOrEmptyAs(string.Empty);
-        var completion = CompletionProvider.GetImageCompletion(_services, provider: options?.Provider ?? "openai", model: options?.Model ?? "gpt-image-1");
+        var completion = CompletionProvider.GetImageCompletion(_services, provider: options?.Provider ?? "openai", model: options?.Model ?? "gpt-image-1-mini");
         var message = await completion.GetImageGeneration(new Agent()
         {
             Id = innerAgentId,
@@ -124,7 +124,7 @@ public async Task<RoleDialogModel> EditImage(string text, InstructFileModel imag
         var innerAgentId = options?.AgentId ?? Guid.Empty.ToString();
         var instruction = await GetAgentTemplate(innerAgentId, options?.TemplateName);
 
-        var completion = CompletionProvider.GetImageCompletion(_services, provider: options?.Provider ?? "openai", model: options?.Model ?? "gpt-image-1");
+        var completion = CompletionProvider.GetImageCompletion(_services, provider: options?.Provider ?? "openai", model: options?.Model ?? "gpt-image-1-mini");
         var binary = await DownloadFile(image);
 
         // Convert image
@@ -173,7 +173,7 @@ public async Task<RoleDialogModel> EditImage(string text, InstructFileModel imag
         var innerAgentId = options?.AgentId ?? Guid.Empty.ToString();
         var instruction = await GetAgentTemplate(innerAgentId, options?.TemplateName);
 
-        var completion = CompletionProvider.GetImageCompletion(_services, provider: options?.Provider ?? "openai", model: options?.Model ?? "gpt-image-1");
+        var completion = CompletionProvider.GetImageCompletion(_services, provider: options?.Provider ?? "openai", model: options?.Model ?? "gpt-image-1-mini");
         var imageBinary = await DownloadFile(image);
         var maskBinary = await DownloadFile(mask);
 

src/Infrastructure/BotSharp.Core/Infrastructures/CompletionProvider.cs

@@ -213,7 +213,7 @@ private static (string, string) GetProviderAndModel(IServiceProvider services,
             model = agentConfig?.Model ?? agentSetting.LlmConfig?.Model;
             if (state.ContainsState("model"))
             {
-                model = state.GetState("model", model ?? "gpt-image-1");
+                model = state.GetState("model", model ?? "gpt-image-1-mini");
             }
             else if (state.ContainsState("model_id") || !string.IsNullOrEmpty(modelId))
             {

src/Plugins/BotSharp.Plugin.FileHandler/Functions/EditImageFn.cs

@@ -137,7 +137,7 @@ private async Task<string> GetImageEditResponse(string description, string? defa
             LlmConfig = new AgentLlmConfig
             {
                 Provider = llmConfig?.Provider ?? "openai",
-                Model = llmConfig?.Model ?? "gpt-4o-mini",
+                Model = llmConfig?.Model ?? "gpt-5-mini",
                 MaxOutputTokens = llmConfig?.MaxOutputTokens,
                 ReasoningEffortLevel = llmConfig?.ReasoningEffortLevel
             }
@@ -168,7 +168,7 @@ private async Task<string> GetImageEditResponse(string description, string? defa
         }
 
         provider = "openai";
-        model = "gpt-image-1";
+        model = "gpt-image-1-mini";
 
         return (provider, model);
     }

src/Plugins/BotSharp.Plugin.FileHandler/Functions/GenerateImageFn.cs

@@ -101,7 +101,7 @@ private async Task<string> GetImageGenerationResponse(string description, string
             LlmConfig = new AgentLlmConfig
             {
                 Provider = llmConfig?.Provider ?? "openai",
-                Model = llmConfig?.Model ?? "gpt-4o-mini",
+                Model = llmConfig?.Model ?? "gpt-5-mini",
                 MaxOutputTokens = llmConfig?.MaxOutputTokens,
                 ReasoningEffortLevel = llmConfig?.ReasoningEffortLevel
             }
@@ -132,7 +132,7 @@ private async Task<string> GetImageGenerationResponse(string description, string
         }
 
         provider = "openai";
-        model = "gpt-image-1";
+        model = "gpt-image-1-mini";
 
         return (provider, model);
     }

src/Plugins/BotSharp.Plugin.FileHandler/Helpers/AiResponseHelper.cs

@@ -21,11 +21,11 @@ internal static string GetDefaultResponse(IEnumerable<string> files)
 
     internal static async Task<string> GetImageGenerationResponse(IServiceProvider services, Agent agent, string description)
     {
-        var text = $"Please generate a user-friendly response from the following description to " +
-                   $"inform user that you have completed the required image: {description}";
+        var text = $"Please generate a user-friendly and short response from the following description to " +
+                   $"inform user that the required image is generated : {description}";
 
         var provider = agent?.LlmConfig?.Provider ?? "openai";
-        var model = agent?.LlmConfig?.Model ?? "gpt-4o-mini";
+        var model = agent?.LlmConfig?.Model ?? "gpt-5-mini";
         var completion = CompletionProvider.GetChatCompletion(services, provider: provider, model: model);
         var response = await completion.GetChatCompletions(agent, [new RoleDialogModel(AgentRole.User, text)]);
         return response.Content;