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

https://sierra-wiki.win/index.php/How_Do_I_Stop_Grok_from_Using_My_Chats_for_Training_on_Grok.com%3F

To delete your Grok chat history, go to grok.com/app and remove conversations there. If you use Grok on X, clear your chats separately on that platform. Remember, files and Imagine media aren’t deleted with chats—they need their own removal process