Barret Zoph
Jan 14, 2026
Returns to OpenAI.
Simo, already a board member at OpenAI, will transition out of Instacart over the next few months and join the AI company full-time later this year.
Medical leave ran longer than expected, so she moves to a part-time advisory role.
Jan 14, 2026
Returns to OpenAI.
Nov 10, 2025
Will build out OpenAI compute infrastructure for artificial general intelligence.
Sep 2, 2025
Reports to Fidji Simo and heads product engineering for ChatGPT, Codex and future apps.
From public announcements and filings. Roles as reported on the date shown. Logos via logo.dev; trademarks belong to their owners.
Weekly: the week's data and AI leadership moves, Saturday mornings.