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

https://www.bookmark-url.win/to-delete-your-grok-chat-history-go-to-grok-com-app-and-clear-conversations-1

To delete your Grok chat history on grok.com/app and X, go to your chat settings and choose the delete option. Remember, files and Imagine media aren’t removed automatically—they need to be deleted separately