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

https://noon-wiki.win/index.php/Does_Deleting_on_Grok.com_Also_Delete_Chats_in_the_Grok_App%3F

To delete your Grok chat history, go to grok.com/app or use X and clear your conversations there. Remember, deleting chats won’t remove any files or Imagine media—you’ll need to delete those separately