diff --git a/litellm/utils.py b/litellm/utils.py
index b734ae465..2b9660bfc 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -3896,12 +3896,16 @@ def get_formatted_prompt(
 
 
 def get_response_string(response_obj: ModelResponse) -> str:
-    _choices: List[Choices] = response_obj.choices  # type: ignore
+    _choices: List[Union[Choices, StreamingChoices]] = response_obj.choices
 
     response_str = ""
     for choice in _choices:
-        if choice.message.content is not None:
-            response_str += choice.message.content
+        if isinstance(choice, Choices):
+            if choice.message.content is not None:
+                response_str += choice.message.content
+        elif isinstance(choice, StreamingChoices):
+            if choice.delta.content is not None:
+                response_str += choice.delta.content
 
     return response_str