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- Greg Brockman co-founded OpenAI with Sam Altman and Elon Musk in 2015.
- Altman, OpenAI's CEO, was abruptly ousted from his role by the board on Friday.
- Hours later, Brockman posted on X that he was leaving the company, too.
OpenAI President and co-founder Greg Brockman announced on X Friday evening that he is stepping down from his post just hours after the company's CEO Sam Altman was ousted by the board.