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

https://speedy-wiki.win/index.php/What_Does_Grok_Delete_on_X_When_I_Hit_%22Delete_Conversation_History%22%3F

To delete your Grok chat history, go to grok.com/app and delete each conversation you want to remove. Then check the Recently Deleted folder, where messages stay for 30 days before permanent deletion