Greg Brockman

Greg Brockman studied mathematics at Harvard and MIT before dropping out to join Stripe, where he eventually became the company's Chief Technology Officer. He left Stripe in 2015 to co-found OpenAI alongside Altman, Musk, and Sutskever, becoming the company's President and Chairman. Brockman was instrumental in establishing OpenAI's engineering culture and technical infrastructure in its early years and was a central figure in the events surrounding the November 2023 board crisis, during which he briefly resigned before returning alongside Altman.

Greg Brockman served as OpenAI's President from its founding through mid-2024, when he announced he was taking an extended sabbatical. His technical background and operational focus complemented Altman's external-facing role and Sutskever's research leadership. Brockman's experience at Stripe — one of the most technically sophisticated payment infrastructure companies in the world — gave him a depth of systems engineering expertise that was critical in OpenAI's early years when the organization was building the computational infrastructure needed to train and serve large models. Brockman was deeply involved in the development and release of the GPT series and ChatGPT and was regarded as one of the key architects of the company's engineering culture. His sabbatical announcement in 2024 was widely interpreted as a reflection of the organizational strain produced by the November 2023 governance crisis.