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

https://victor-wiki.win/index.php/What%E2%80%99s_the_Difference_Between_Deleting_Grok_History_and_Deleting_the_Account%3F

To delete your Grok chat history on grok.com/app or X, go to your chat settings and select delete conversation. Remember, this only removes text chats. Files and Imagine media stored in your account must be deleted separately