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

https://www.slideserve.com/aaron_ward92/how-do-i-delete-grok-chat-history-on-grok-com

To delete your Grok chat history on grok.com/app and X, go to your chat settings and choose “Delete History.” Remember, this clears only chat messages—files and Imagine media must be deleted separately