To delete your Grok chat history, go to grok.com/app or X and remove the chats...

https://www.insert-bookmark.win/to-delete-your-grok-chat-history-go-to-grok-com-app-or-your-x-messages-and

To delete your Grok chat history, go to grok.com/app or X and remove the chats directly. Remember, this won’t delete any files or Imagine media—you need to delete those separately