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

https://mighty-wiki.win/index.php/Can_I_Delete_a_Single_Grok_Chat_on_X_or_Only_Everything%3F

To delete your Grok chat history, go to grok.com/app and clear conversations directly there. You can also delete chats on X if you use it for Grok messages