Brockman Takes Over OpenAI Product After Simo Exit

Simo said she would transition to a part-time adviser role. She thanked Brockman, CEO Sam Altman and the board for their support.

Brockman replied to Simo's post on X: "I am deeply grateful for all Fidji has done for OpenAI and to advance our mission, and for the opportunity to have worked alongside her for the past few years."

Altman announced in May 2025 that Simo, then CEO of Instacart, would join OpenAI as CEO of Applications later that year. He described Applications as "a group of existing business and operational teams responsible for how our research reaches and benefits the world."

In March, reports said Simo would oversee OpenAI's push to combine its ChatGPT app, Codex coding platform and browser into a desktop super app. Brockman was to help manage the product overhaul and related organizational changes.

OpenAI did not immediately reply to a request for comment.