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

https://mill-wiki.win/index.php/How_Do_I_Export_My_Grok_Chats_Before_Deleting_Everything%3F

To delete your Grok chat history on grok.com/app and X, go to your chat settings and choose delete history. Remember, this does not remove files or Imagine media—they need to be deleted separately