To delete your Grok chat history, go to grok.com/app or use the X platform....

https://domgodwinson38.gumroad.com/p/how-do-i-delete-files-from-grok-the-ones-people-forget-a-full-cleanup-guide

To delete your Grok chat history, go to grok.com/app or use the X platform. Find your chats and choose delete. Remember, deleting chats doesn’t remove files or Imagine media—that needs to be done separately