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

https://fair-wiki.win/index.php/Grok_Delete_All_Worked_But_My_History_Still_Shows_%E2%80%93_What_Do_I_Try%3F

To delete your Grok chat history, go to grok.com/app or your X account and remove the conversations there. Remember, deleting chat doesn’t erase files or Imagine media—that needs deleting separately