To delete your Grok chat history on grok.com/app or X, open the chat, choose...

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 on grok.com/app or X, open the chat, choose the delete option, and confirm. Remember, deleted chats go to Recently Deleted and stay there for 30 days before permanent removal