diff --git a/spice/wrapped_clients.py b/spice/wrapped_clients.py
index 01dbea7..b8e03fa 100644
--- a/spice/wrapped_clients.py
+++ b/spice/wrapped_clients.py
@@ -223,6 +223,7 @@ def _convert_messages(
     ) -> Tuple[str, List[MessageParam]]:
         # Anthropic handles both images and system messages different from OpenAI, only allows alternating user / assistant messages,
         # and doesn't support tools / function calling (still in beta, and doesn't support streaming)
+        messages = [m for m in messages if m.get("content", "").strip()]
 
         system = ""
         converted_messages: List[MessageParam] = []