Who is betting on what in AI, and against whom.
Researcher
Post-training and reinforcement-learning researcher. Google Brain 2016 to 2022, then OpenAI, then a co-founder of Thinking Machines Lab in early 2025; left it in January 2026 after a dispute with Mira Murati and joined Google DeepMind as a VP of research in August 2026 to work on Gemini.
Known for Neural architecture search; OpenAI post-training; Thinking Machines Lab co-founder