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

https://aged-wiki.win/index.php/Does_Deleting_Grok_History_Reset_Memory_or_Custom_Instructions%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