To delete your Grok chat history, go to grok.com/app and remove messages...

https://www.4shared.com/office/SLfWvZpiku/pdf-40651-86872.html

To delete your Grok chat history, go to grok.com/app and remove messages directly from the conversation. Don’t forget to check the Recently Deleted folder—it holds your deleted chats for 30 days before permanent removal