To delete your Grok chat history on grok.com/app or X, open the chat, choose...

https://technivorz.com/what-pages-do-i-need-to-visit-to-delete-everything-tied-to-grok/

To delete your Grok chat history on grok.com/app or X, open the chat, choose the delete option, and confirm. Remember, deleted chats go to Recently Deleted and stay there for 30 days before permanent removal