Update app.py

app.py

@@ -353,7 +353,7 @@ with gr.Blocks(
         
         gr.Markdown("### 模型選擇")
         model_choice = gr.Radio(
-            ["gpt-3.5-turbo", "gpt-4", "gpt-4-turbo"], 
+            ["gpt-4", "gpt-4.1", "gpt-4.5"], 
             label="🤖 選擇 AI 模型", 
             value="gpt-4",
             elem_classes=["gr-radio"]
@@ -427,4 +427,4 @@ if __name__ == "__main__":
         share=True,
         server_name="0.0.0.0",
         server_port=7860
-    ) 
+    )