Update app.py

app.py

@@ -16,7 +16,7 @@ logger = logging.getLogger(__name__)
 
 # --- Constants ---
 MODEL_CONFIG = {
-    "model": "llama-3.3-70b-versatile",
+    "model": "meta-llama/Llama-Guard-4-12B",
     "temperature": 0.5,
     "max_completion_tokens": 1024,
     "stream": True,