Update app.py

app.py

@@ -46,7 +46,7 @@ if os.path.exists(vector_store_file) and os.path.exists(data_file):
         # Load the embedding and LLM models
         print("Loading AI and embedding models...")
         embedding_model = SentenceTransformer('BAAI/bge-large-en-v1.5')
-        llm = genai.GenerativeModel('gemini-pro') # Using gemini-pro as it's a robust choice
+        llm = genai.GenerativeModel('gemini-2.5-flash') # Using gemini-pro as it's a robust choice
         print("✅ Models loaded successfully.")
 
     except Exception as e: