To delete your Grok chat history on grok.com/app and X, open the chat, select...
https://stateofseo.com/how-do-i-handle-a-stubborn-grok-file-that-wont-delete/
To delete your Grok chat history on grok.com/app and X, open the chat, select the messages or conversations, and choose delete. Remember, deleting chat doesn’t remove files or Imagine media—they must be deleted separately