Update app.py

app.py

@@ -14,7 +14,7 @@ config = {
     "chunk_overlap": 150,       # document splitting
     "chunk_size": 1500,         # document splitting
     "k": 3,                     # document retrieval
-    "model_name": "gpt-4-0613", # llm
+    "model_name": "gpt-4-0314", # llm
     "temperature": 0,           # llm
 }