Update app.py

app.py

@@ -733,7 +733,7 @@ with gr.Blocks(theme=custom_theme, css=custom_css) as demo:
                 default_provider = 'Groq'
                 # Fallback if 'Groq' is not an option
                 if default_provider not in available_providers:
-                    default_provider = available_providers[0] if available_providers else None
+                    default_provider = available_providers[2] if available_providers else None
 
                 # Get initial models and the default model for the selected provider
                 initial_models = get_models_for_provider(default_provider) if default_provider else []