Update app.py

app.py

@@ -35,7 +35,7 @@ async def optimize_text(prompt: InputPrompt):
 
 def gen(prompt):
     response = client.models.generate_content(
-        model="gemma-3-4b-it",
+        model="gemma-3-12b-it",
         contents='<start_of_turn>system\n'+System_instruction+'<end_of_turn>\n<start_of_turn>user\n'+prompt+'<end_of_turn>\n<start_of_turn>model\n'
     )
     return response.text