To delete your Grok chat history on grok.com/app and X, go to your chat...

https://johnathankvdj950.wpsuo.com/how-do-i-delete-grok-history-but-keep-a-few-chats

To delete your Grok chat history on grok.com/app and X, go to your chat settings and select “Delete History.” Remember, this won’t remove files or Imagine media—they need to be deleted separately