diff --git a/litellm/types/llms/openai.py b/litellm/types/llms/openai.py
index e89fe94f955..535510c2a0a 100644
--- a/litellm/types/llms/openai.py
+++ b/litellm/types/llms/openai.py
@@ -1518,7 +1518,7 @@ class OutputItemAddedEvent(BaseLiteLLMOpenAIResponseObject):
 class OutputItemDoneEvent(BaseLiteLLMOpenAIResponseObject):
     type: Literal[ResponsesAPIStreamEvents.OUTPUT_ITEM_DONE]
     output_index: int
-    sequence_number: int = 1
+    sequence_number: int = 0
     item: BaseLiteLLMOpenAIResponseObject