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

https://stateofseo.com/how-do-i-handle-a-stubborn-grok-file-that-wont-delete/

To delete your Grok chat history, go to grok.com/app and clear conversations there. On X, remove any chats from your messages. Remember, files and Imagine media are stored separately and need to be deleted on their own