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

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 use the X platform and remove conversations directly. Don’t forget that files and Imagine media aren’t deleted with chats. You’ll need to delete those separately