Update src/qa/chain.py

src/qa/chain.py

@@ -29,7 +29,7 @@ class QAChain:
         model_name: str = "text-embedding-3-small",
         k: int = 5,
         verbose: bool = False,
-        llm_model: str = "gpt-5-nano",
+        llm_model: str = "gpt-4o-mini",
         llm_temperature: float = 0.3,
         llm_max_tokens: Optional[int] = None,
         max_history_turns: int = 10,