# Percy Liang

> Percy Liang is a Stanford computer science professor, founding director of the Center for Research on Foundation Models and co-founder of Together AI. His work spans language understanding, reproducible research, model evaluation and open development through projects including CodaLab Worksheets, HELM and Marin.

- **Role:** Professor of Computer Science at Stanford University; founder at Together AI
- **Organizations:** Stanford University, Stanford Center for Research on Foundation Models, Together AI, Marin, Google
- **Nationality:** American
- **Education:** B.S., Massachusetts Institute of Technology, M.Eng., Massachusetts Institute of Technology, Ph.D. in Computer Science, University of California, Berkeley
- **Known for:** Founding director of Stanford's Center for Research on Foundation Models., Co-founder of Together AI., Co-created Marin, an open lab for foundation models, with David Hall.

## Career timeline

- **2000** — Won a silver medal at the International Olympiad in Informatics.
- **2004** — Received a B.S. from MIT and won the MIT Concerto Competition.
- **2005** — Received an M.Eng. from MIT.
- **2011** — Completed a Ph.D. at UC Berkeley under Michael I. Jordan and Dan Klein.
- **2012** — Worked as a postdoctoral researcher at Google before joining Stanford's faculty.
- **2021** — Founded Stanford's Center for Research on Foundation Models.
- **2022** — Co-founded Together AI; received a Schmidt Sciences AI2050 Senior Fellowship.
- **2023** — Helped introduce the Foundation Model Transparency Index; gave a TEDAI talk on building AI openly.
- **2024** — Created Marin with David Hall at Stanford.
- **2025** — Marin launched publicly as an open lab for building foundation models.

## Achievements

- Founding director of Stanford's Center for Research on Foundation Models.
- Co-founder of Together AI.
- Co-created Marin, an open lab for foundation models, with David Hall.
- Helped lead HELM and the Foundation Model Transparency Index.
- Created CodaLab Worksheets for reproducible research.
- Received the 2019 Presidential Early Career Award for Scientists and Engineers, 2016 IJCAI Computers and Thought Award, 2016 NSF CAREER Award and 2015 Sloan Research Fellowship.
- Won a silver medal at the 2000 International Olympiad in Informatics and placed second at the 2002 ACM ICPC World Finals.

## Latest updates

- **2026-09** — Marin reported that it was training a 535-billion-parameter mixture-of-experts model with 23 billion active parameters, with work available to follow publicly.
- **2025-05** — Marin publicly launched its open-lab approach, including preregistered experiments and public review through GitHub.
- **2025-01** — Stanford's 2025 HAI annual report described CRFM's expanded HELM work and Marin initiative.

## Links

- Website: https://cs.stanford.edu/~pliang/
- LinkedIn: https://www.linkedin.com/in/percy-liang-717b8a/
- Twitter/X: https://x.com/percyliang
- GitHub: https://github.com/percyliang

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Profile page: https://yespress.io/percy-liang
Published by YesPress — https://yespress.io
Last updated: 2026-09-29