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

https://fast-wiki.win/index.php/How_do_I_Delete_Grok_Chats_in_the_Mobile_App_(iOS_or_Android)%3F

To delete your Grok chat history, go to grok.com/app or X and remove messages directly. Remember, files and Imagine media don’t delete automatically and need to be cleared separately