Jakub Pachocki
Jakub Pachocki is OpenAI’s chief scientist. He earned a theoretical computer science doctorate at Carnegie Mellon and joined OpenAI in 2017. His work includes a robot hand trained in simulation and OpenAI Five’s Dota 2 system, which defeated Team OG in its defined game setting. OpenAI credited him with leading GPT-4 research and appointed him chief scientist in May 2024. He later co-authored competitive programming research on reasoning models. In his 2026 essay, he described reinforcement learning’s role in that research and discussed alignment and monitoring. His work connects concrete experiments with wider responsibility for the development and study of advanced model systems.
Timeline
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2017
Joining OpenAI
Pachocki joined OpenAI as a research scientist in 2017.
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2018
Learning to move a robot hand
Pachocki co-authored robot hand learning research in 2018.
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2019
OpenAI Five
Pachocki co-authored the 2019 OpenAI Five paper.
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May 2024
Chief scientist
OpenAI appointed Pachocki chief scientist in May 2024.
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February 2025
Programming experiments
Pachocki co-authored competitive programming research in 2025.
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September 2026
Explaining reasoning research
Pachocki published An Alien Mind as chief scientist in September 2026.
Sources and credits
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