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

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 and clear your conversations there. On X, remove any shared chats from your messages. Remember, deleting chats won’t erase files or Imagine media—those must be deleted separately