diff --git a/llms/providers/anthropic.py b/llms/providers/anthropic.py
index 8b70565..3731ade 100644
--- a/llms/providers/anthropic.py
+++ b/llms/providers/anthropic.py
@@ -147,7 +147,7 @@ def _prepare_message_inputs(
             "messages": messages,
             "system": system_message,
             "temperature": temperature,
-            "max_tokens_to_sample": max_tokens,
+            "max_tokens": max_tokens,
             "stop_sequences": stop_sequences,
         }
         return model_inputs