Update app.py

app.py

@@ -15,8 +15,8 @@ CORS(app)
 sock = Sock(app)
 
 # AI classification pipeline using Facebook's zero-shot model (lightweight for free-tier)
-classifier = pipeline("zero-shot-classification", model="facebook/bart-large-mnli")
 
+classifier = pipeline("zero-shot-classification", model="valhalla/distilbart-mnli-12-1")
 # Active chat sessions: {session_id: [ {role, msg, ip, timestamp} ]}
 SESSIONS = {}