diff --git a/litellm/utils.py b/litellm/utils.py
index 6021cc533..b71587693 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -3079,9 +3079,9 @@ def convert_to_model_response_object(response_object: Optional[dict]=None, model
             model_response_object.choices = choice_list
 
             if "usage" in response_object:
-                model_response_object.usage.completion_tokens = response_object["usage"]["completion_tokens"]
-                model_response_object.usage.prompt_tokens = response_object["usage"]["prompt_tokens"]
-                model_response_object.usage.total_tokens = response_object["usage"]["total_tokens"]
+                model_response_object.usage.completion_tokens = response_object["usage"].get("completion_tokens", 0)
+                model_response_object.usage.prompt_tokens = response_object["usage"].get("prompt_tokens", 0)
+                model_response_object.usage.total_tokens = response_object["usage"].get("total_tokens", 0)
 
             if "id" in response_object: 
                 model_response_object.id = response_object["id"]