Update main.py

main.py

@@ -174,7 +174,7 @@ def analyze_image_with_text(image_path: str, user_text: str) -> str:
         img_user = PIL.Image.open(image_path)
         
         response = genai_client.models.generate_content(
-            model="gemini-2.5-pro",
+            model="gemini-3-flash-preview",
             contents=[img_user, user_text]
         )
         return response.text if response.text else "Gemini 沒答案！"
@@ -186,7 +186,7 @@ def analyze_image_with_text(image_path: str, user_text: str) -> str:
 # ==========================
 tools = [generate_and_upload_image, analyze_image_with_text]
 # 修正模型：gemini-3-flash-preview 目前在正式 API 中通常不可用
-llm = ChatGoogleGenerativeAI(model="gemini-2.5-pro", temperature=0.4)
+llm = ChatGoogleGenerativeAI(model="gemini-3-flash-preview", temperature=0.4)
 
 prompt_template = ChatPromptTemplate.from_messages([
     ("system", "你是一個強大的助理。在使用工具之前，請務必先說明你的思考步驟。如果生成了圖片，請直接給出 URL。"),