Fidji Simo steps down from OpenAI No. 2 role, transitions to part-time advisor

According to TechCrunch and The Verge, Fidji Simo, OpenAI's No. 2 executive and AGI chief, stepped down from her full-time role on July 9 after extended medical leave for a neuroimmune condition proved longer than expected. Simo will transition to a part-time advisory position. She joined OpenAI in May 2025 as CEO of Applications, a newly created role that consolidated business and product operations with direct reporting to Sam Altman.