Update main.py

main.py

@@ -139,7 +139,7 @@ def analyze_image_with_text(image_path: str, user_text: str) -> str:
             return "錯誤：找不到該圖片檔案。"
         img_user = PIL.Image.open(image_path)
         response = genai_client.models.generate_content(
-            model="gemini-2.5-flash-lite", # "gemini-3.1-flash-lite-preview", "gemini-3-flash-preview"
+            model="gemini-3.1-flash-lite-preview", # "gemini-3.1-flash-lite-preview", "gemini-3-flash-preview"
             contents=[img_user, user_text]
         )
         return response.text if response.text else "Gemini 沒答案！"
@@ -151,7 +151,7 @@ def analyze_image_with_text(image_path: str, user_text: str) -> str:
 # ==========================
 tools = [generate_and_upload_image, analyze_image_with_text]
 # 1. 建立 LLM 模型
-llm = ChatGoogleGenerativeAI(model="gemini-3.1-flash-lite-preview", temperature=0.4)
+llm = ChatGoogleGenerativeAI(model="gemini-2.5-flash-lite", temperature=0.4)
 # 2. 定義 System Prompt (取代原本的 prompt_template)
 system_prompt = "你是一個強大的影像生成及影像分析代理人。如果生成了圖片，請直接給出 URL。"
 # 3. 直接建立包含 Executor 功能的 Agent