To delete your Grok chat history on grok.com/app and X, open your chat, select...

https://wiki-byte.win/index.php/Should_I_Export_Grok_Data_Before_I_Delete_Chat_History%3F

To delete your Grok chat history on grok.com/app and X, open your chat, select the delete option, and confirm. Remember, deleted chats move to Recently Deleted where they stay for 30 days before permanent removal