To delete your Grok chat history on grok.com/app and X, open the app, go to...

https://victor-wiki.win/index.php/What%E2%80%99s_the_Difference_Between_Deleting_Grok_History_and_Deleting_the_Account%3F

To delete your Grok chat history on grok.com/app and X, open the app, go to your conversations, and choose “Delete” for each chat. Remember, deleting chats doesn’t remove files or Imagine media—you’ll need to delete those separately