OpenAI's chief executive of AGI deployment, Fidji Simo, is stepping down from her full-time role and becoming a part-time adviser due to a chronic neuroimmune condition that requires extended medical treatment. The move comes as OpenAI reorganizes leadership and product teams ahead of a planned 2027 IPO targeting a $1 trillion（約160兆円） valuation, with the company focusing on a core set of products and shutting down peripheral bets.
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Fidji Simo, OpenAI's chief executive of AGI deployment, is leaving her full-time position and transitioning to a part-time adviser role after taking medical leave due to a worsening chronic neuroimmune condition. She had postponed medical tests and therapies while employed at OpenAI but determined during her monthslong leave that recovery would require much longer and more focused attention.
Why it matters
Simo's departure represents a leadership shift at a critical moment for OpenAI, which is consolidating product teams and preparing for a planned IPO expected in 2027 targeting a $1 trillion（約160兆円） valuation. Her full-time exit occurs amid broader executive reorganization, with OpenAI president Greg Brockman taking over product strategy and other leaders reassigned to focus the company on core products.
What to watch
OpenAI has positioned Thibault Sottiaux as head of core products including ChatGPT and has merged teams working on ChatGPT, its AI-powered browser, and its AI coding agent into a single "superapp." On the same day as Simo's announcement, OpenAI unveiled its largest product update to ChatGPT since launch, including an AI agent that can take action on users' behalf and a redesigned desktop app.
Simo's transition from full-time executive to part-time adviser reflects the personal cost of OpenAI's rapid scaling during the AI boom. She joined OpenAI's board in March 2024 and was hired by CEO Sam Altman the following year to manage product and business operations so he could concentrate on research and infrastructure projects. However, her health challenges—rooted in a seven-year chronic condition—intensified, and she ultimately determined that maintaining full-time duties while pursuing stabilizing medical treatment was untenable. Her departure does not occur in isolation: Brad Lightcap, the former COO, has moved to special projects, and Greg Brockman has assumed product strategy oversight, signaling a deliberate restructuring at the leadership level.
The timing of Simo's exit coincides with OpenAI's strategic pivot toward profitability and focus ahead of its planned 2027 IPO. The company is consolidating its product roadmap—merging ChatGPT, its browser, and AI coding agent into a unified "superapp"—while shutting down more experimental efforts like Sora. Thibault Sottiaux has been positioned to lead core products, reducing the span of oversight and clarifying product priorities. On the day Simo's departure was announced, OpenAI released a major ChatGPT update featuring an autonomous agent capable of performing user-requested tasks, marking a tangible step in the company's product evolution and underscoring the product organization's continued momentum despite leadership flux.
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