diff --git a/chat_stream.go b/chat_stream.go
index 009e1b1..8211292 100644
--- a/chat_stream.go
+++ b/chat_stream.go
@@ -21,7 +21,6 @@ type ChatCompletionStreamResponse struct {
 	Created int64                        `json:"created"`
 	Model   string                       `json:"model"`
 	Choices []ChatCompletionStreamChoice `json:"choices"`
-	Usage   Usage                        `json:"usage"`
 }
 
 // ChatCompletionStream