diff --git a/nanobot/providers/litellm_provider.py b/nanobot/providers/litellm_provider.py
index 33c300a..9d76c2a 100644
--- a/nanobot/providers/litellm_provider.py
+++ b/nanobot/providers/litellm_provider.py
@@ -46,6 +46,8 @@ class LiteLLMProvider(LLMProvider):
         
         # Disable LiteLLM logging noise
         litellm.suppress_debug_info = True
+        # Drop unsupported parameters for providers (e.g., gpt-5 rejects some params)
+        litellm.drop_params = True
     
     def _setup_env(self, api_key: str, api_base: str | None, model: str) -> None:
         """Set environment variables based on detected provider."""