
Prafulla DhariwalResearcher
OpenAI
Technical Fellow
via OpenAI
Researcher

Chief Research Officer at OpenAI
Chen is chief research officer at OpenAI, leading frontier research. He contributed to GPT-3 and GPT-4, DALL-E, Codex, and Image GPT, work that defined the company's generative systems.
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Last editorial review: July 23, 2026