Update app.py

app.py

@@ -21,7 +21,7 @@ if 'messages' not in st.session_state:
 # Cache model loading
 @st.cache_resource
 def load_model_and_tokenizer():
-    model_name = "Qwen/Qwen2.5-Coder-7B-Instruct"  # Model identifier
+    model_name = "Qwen/Qwen2.5-Coder-3B-Instruct"  # Model identifier
 
     # Load tokenizer
     tokenizer = AutoTokenizer.from_pretrained(