Harvey
Overview
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.
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Product story
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.
Funding rounds
Team
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.How we work
How we work ↗Simplicity
Our technology is complex. Our customers' problems are complex. Our solutions can't be. Complexity appreciates, and simplicity scales — so we obsess over first principles and apply them to every decision, big and small.
Decisiveness
AI moves fast. There's no time for overanalysis or ivory tower thinking. We have a bias for action and we'd rather make mistakes than become complacent. We make the call, course-correct, and learn as we go.
Job's Not Finished
There is always more we can do to solve for our customers, and we know it. Harvey is an intense culture — we hire people who thrive on that intensity, who push each other for excellence. We're never satisfied with the status quo.
3+ days per week in one of 16 global offices, with select roles hired remote and marked as such.
In his June 2026 Sourcery interview, Winston Weinberg said more than 200 employees were lawyers. Many work as legal engineers and forward-deployed engineers across product and go-to-market teams. Winston Weinberg on Sourcery, June 2026 ↗