Enlarge / An image Illya Sutskever tweeted with this OpenAI resignation announcement. From left to right: New OpenAI Chief Scientist Jakub Pachocki, President Greg Brockman, Sutskever, CEO Sam Altman, and CTO Mira Murati. (credit: Ilya Sutskever / X) On Tuesday evening, OpenAI chief scientist Ilya Sutskever announced that he is leaving the company he co-founded, six months since he participated in the coup that temporarily ousted OpenAI CEO Sam Altman.