To delete your Grok chat history on grok.com/app or X, open your chat, choose...

https://source-wiki.win/index.php/Where_is_the_Delete_All_Conversations_Button_in_Grok_Settings%3F

To delete your Grok chat history on grok.com/app or X, open your chat, choose delete, and confirm. Remember, deleted chats go to Recently Deleted and stay there for 30 days before permanent removal