# Winston Weinberg

> Winston Weinberg is the co-founder and CEO of Harvey, the San Francisco legal AI company he started in 2022 with AI researcher Gabriel Pereyra after testing early GPT-3 on legal questions. A former O’Melveny & Myers litigator, he has led Harvey’s expansion into law firms and corporate legal teams worldwide.

- **Role:** Co-founder and CEO at Harvey
- **Organizations:** Harvey, O’Melveny & Myers LLP
- **Education:** Bachelor of Arts, Kenyon College, Juris Doctor, University of Southern California Gould School of Law
- **Known for:** Co-founded Harvey in 2022 with Gabriel Pereyra., Led Harvey as it expanded from more than 500 customers in 54 countries in August 2025 to a reported 3,000-plus customers by September 2026., Helped secure backing from the OpenAI Startup Fund after cold-emailing OpenAI.

## Career timeline

- **2022** — While working as a junior associate at O’Melveny & Myers, tested GPT-3 with roommate Gabriel Pereyra and co-founded Harvey.
- **2025-08** — Harvey reported more than 500 customers in 54 countries and over $100 million in annual recurring revenue.
- **2026-03** — Harvey raised $200 million at an $11 billion valuation and expanded its global presence.
- **2026-09** — Harvey announced a $550 million round at a $15.5 billion valuation; an extension investment raised the round total to $600 million.

## Achievements

- Co-founded Harvey in 2022 with Gabriel Pereyra.
- Led Harvey as it expanded from more than 500 customers in 54 countries in August 2025 to a reported 3,000-plus customers by September 2026.
- Helped secure backing from the OpenAI Startup Fund after cold-emailing OpenAI.
- Led Harvey through a September 2026 funding round at a $15.5 billion valuation.

## Latest updates

- **2026-09** — Harvey announced a $550 million financing at a $15.5 billion valuation; a further $50 million investment from Ontario Teachers’ brought the round to $600 million.
- **2026-09** — Weinberg reported more than 3,000 customers and more than $400 million in annual recurring revenue; Harvey said 80% of Am Law 100 firms used its platform.
- **2026-08** — Harvey announced its first post-trained open-weight model, Tenet, as part of its broader model strategy.

## Links

- Website: https://www.harvey.ai/blog/author/winston-weinberg
- LinkedIn: https://www.linkedin.com/in/winston-weinberg
- Twitter/X: https://x.com/winstonweinberg

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