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

https://www.protopage.com/keith.barker12#Bookmarks

To delete your Grok chat history, go to grok.com/app and clear conversations from your chat list. On X, remove threads directly from your DMs. Remember, deleting chats doesn’t remove files or Imagine media—you need to delete those separately