Harvey is the operating system for legal and professional services. Its products streamline workflows including contract analysis, due diligence, compliance, and litigation, and are used by global law firms and Fortune 500 enterprises to make faster decisions. Harvey was founded in 2022 in San Francisco by Winston Weinberg, a litigation associate at O'Melveny & Myers, and Gabe Pereyra, a research scientist who had worked at Google DeepMind and Meta. It serves 2,400+ legal organizations in 70+ countries.
In a market where no one can build a data moat — law firms will never let a vendor train on privileged work product — we argued that being the institutional default is the moat. We published that thesis in September 2025; an a16z-led $160M round in Harvey was reported five weeks later.
The argument was that brand compounds in legal the way network effects compound elsewhere: each white-shoe firm that signs makes the next one likelier. It followed that Harvey's low day-to-day usage at many firms was not the problem it looked like — in a vertical running on trust and patience, being installed and unlikely to be ripped out beats being heavily used.
Winston Weinberg, then a first-year litigation associate at O'Melveny & Myers, and his roommate Gabe Pereyra tested GPT-3 on landlord-tenant questions pulled from Reddit. According to TechCrunch's account, two of three practicing attorneys said they would send 86 of 100 answers with no edits. They emailed Sam Altman on 4 July 2022, spoke with him that morning, and took their first check from the OpenAI Startup Fund.
Winston WeinbergCo-founder & CEOSecurities and antitrust litigation associate at O'Melveny & Myers before founding Harvey in 2022.LinkedIn ↗
Gabe PereyraCo-founder & PresidentResearch scientist at Google DeepMind and ML engineer at Meta. Wrote the first version of Harvey with Weinberg, his roommate at the time.LinkedIn ↗
Siva GurumurthyChief Technology OfficerCTO of Motive for seven years; before that Director of Engineering at Twitter, running feed, search and discovery ML.LinkedIn ↗
Katie BurkeChief Operating OfficerOwns hiring, onboarding, L&D and performance. Wrote Harvey's public careers guide, a detailed account of the company's culture.
Most associates work across 16 offices. Select roles are remote, with occasional office visits.

"It includes me, 100%."

The COO describes project dinners and 1–2 monthly GTM trips. Vacations stay uninterrupted.

Each office has captains who plan social events.

At four years: Harvey Holiday, with four paid weeks off.

The founders’ usual email sign-off is also a measure used to evaluate deals and projects.
Katie Burke
Chief Operating Officer, Harvey


The COO’s three words: "fast-paced, collaborative, and ambitious."

Quarterly CEO memos share what worked and what didn’t.

Maggie Landers
VP of Talent, Harvey
50 minAI strategy, company values, and the future of legal work with Sarah Guo.
Winston Weinberg
CEO & Co-Founder, Harvey

Just over 1,400 as of 5 August 2026.
Katie Burke
Chief Operating Officer, Harvey