Aleksander Madry announced on X on 19 October that he is returning to [OpenAI](/org/openai) to work with Jakub Pachocki on AI safety and security.
Madry described his departure a few months earlier as having become a sabbatical. He said increasingly capable AI had made safety and security a central priority, changing his earlier focus on making AI more useful to people.
His announcement did not specify a formal job title or an exact return date.