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

https://wiki-book.win/index.php/What_Should_I_Do_if_Grok_Delete_All_Doesn%E2%80%99t_Show_on_Mobile%3F

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