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

https://rapid-wiki.win/index.php/Why_Does_Grok_Say_Storage_Limit_Exceeded_After_I_Deleted_Chats%3F

To delete your Grok chat history, go to grok.com/app and remove conversations manually. On X, clear your chat threads there too. Remember, files and Imagine media don’t delete automatically—they need to be removed separately