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

https://www.tool-bookmarks.win/to-delete-your-grok-chat-history-go-to-grok-com-app-or-open-grok-on-x-then

To delete your Grok chat history on grok.com/app and X, go to your chat settings and select “Delete History.” Remember, this won’t remove files or Imagine media—they need to be deleted separately