diff --git a/litellm/litellm_core_utils/litellm_logging.py b/litellm/litellm_core_utils/litellm_logging.py
index 6f587abcdf1..335a0a1a940 100644
--- a/litellm/litellm_core_utils/litellm_logging.py
+++ b/litellm/litellm_core_utils/litellm_logging.py
@@ -4827,9 +4827,16 @@ class StandardLoggingPayloadSetup:
         else:
             final_response_obj = {}
 
+        # Pass the original BaseModel object to redaction so isinstance checks inside
+        # perform_redaction work correctly (a plain dict never matches ModelResponse etc.)
+        redaction_input = (
+            init_response_obj
+            if isinstance(init_response_obj, BaseModel)
+            else final_response_obj
+        )
         modified_final_response_obj = redact_message_input_output_from_logging(
             model_call_details=kwargs,
-            result=final_response_obj,
+            result=redaction_input,
         )
 
         if modified_final_response_obj is not None and isinstance(
diff --git a/litellm/litellm_core_utils/redact_messages.py b/litellm/litellm_core_utils/redact_messages.py
index ad68f3851a8..cc41696c5ac 100644
--- a/litellm/litellm_core_utils/redact_messages.py
+++ b/litellm/litellm_core_utils/redact_messages.py
@@ -49,6 +49,8 @@ def _redact_choice_content(choice):
             choice.message.reasoning_content = "redacted-by-litellm"
         if hasattr(choice.message, "thinking_blocks"):
             choice.message.thinking_blocks = None
+        if hasattr(choice.message, "audio"):
+            choice.message.audio = None
     elif isinstance(choice, litellm.utils.StreamingChoices):
         choice.delta.content = "redacted-by-litellm"
         if hasattr(choice.delta, "reasoning_content"):