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

https://zulu-wiki.win/index.php/How_Long_Does_Grok_Keep_Deleted_Chats_in_Recently_Deleted%3F

To delete your Grok chat history on grok.com/app and X, go to your chat settings and choose delete history. Remember, files and Imagine media don’t get deleted automatically—they need to be removed separately