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, then do the same on X. Remember, files and Imagine media don’t delete automatically with chats—they need to be removed separately