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

https://www.alphabookmarks.win/to-delete-your-grok-chat-history-on-grok-com-app-and-x-go-to-your-chat-2

To delete your Grok chat history, go to grok.com/app and clear conversations directly from your chat list. On X, you’ll need to delete chats there separately