Update app.py

app.py

@@ -197,7 +197,7 @@ def main():
                             content_blocks.append({"text": f"Question: {user_input}"})
 
                             response = client.models.generate_content(
-                                model="gemini-2.5-pro-preview-06-05",
+                                model="gemini-2.0-flash",
                                 contents=content_blocks,
                                 config={"tools": [{"google_search": {}}]}
                             )