To delete your Grok chat history on grok.com/app and X, open your chat, click...

https://source-wiki.win/index.php/Where_is_the_Delete_All_Conversations_Button_in_Grok_Settings%3F

To delete your Grok chat history on grok.com/app and X, open your chat, click the delete option, and confirm. Remember that files and Imagine media are stored separately and must be deleted in their own sections