Greg Brockman just picked up the OpenAI job nobody bid on: control of ChatGPT, Codex, and the browser business Fidji Simo was brought in to run. Simo, whom Sam Altman tapped in May 2025 for OpenAI’s newly created CEO of Applications post, told staff Thursday she’s stepping down and moving to a part-time advisory role, citing a chronic medical condition that put her on leave in April. CNBC reported OpenAI won’t hire a replacement.
That’s the real figure here: zero. No new CEO of Applications, no outside search, no severance detail on the record. Brockman, who’d been running product on an interim basis since April, just keeps the keys. Bloomberg reported Simo’s remaining duties split between Brockman, CFO Sarah Friar, and Chief Strategy Officer Jason Kwon, but Brockman gets the assets that matter: the products CNBC’s report called OpenAI’s most important and profitable projects.
The math doesn’t flatter OpenAI’s succession bench. A marquee outside hire from Instacart is already gone, and the role folds back into a co-founder who never left the building. Altman created the CEO of Applications post specifically so he could step back from day-to-day product work. Without a permanent replacement, those decisions default straight back to Brockman, with no deliberate succession plan behind it.
Brockman now runs OpenAI’s most profitable business line without a new title or a disclosed pay bump. Simo stays on as an advisor, compensated in equity if not headlines. No closing date needed. This one already closed.
— Diana Kowalski