Update app.py

app.py

@@ -255,8 +255,8 @@ with gr.Blocks(css="""#chatbot { font-size: 14px; min-height: 1200; }""") as dem
             # Model Selection
             model = gr.Radio(
                 choices=[
-                    'gpt-4o',
                     'gpt-4o-mini',
+                    'gpt-4o',
                     'gpt-4',
                 ], 
                 label='Select Model', 
@@ -329,6 +329,4 @@ with gr.Blocks(css="""#chatbot { font-size: 14px; min-height: 1200; }""") as dem
         [msg, chatbot]
     )
 
-demo.launch()
-
-
+demo.launch()