Harvey AI
Legal AI
- Valuation
- $3B(Series D, late 2024)
- Total Funding
- $494M
About Harvey AI
Harvey is an AI platform built specifically for law firms and legal departments, using fine-tuned LLMs to assist with legal research, contract analysis, due diligence, litigation drafting, and regulatory compliance. Backed by OpenAI and top law firm investors, Harvey is the leading AI platform for the legal industry, with clients including Allen & Overy, PwC, and the US Air Force legal department.
Company History
Harvey was founded in 2022 by Winston Weinberg (ex-lawyer) and Gabriel Pereyra (ex-DeepMind researcher). It uses fine-tuned versions of GPT-4 and other frontier models trained specifically on legal data, court decisions, and regulatory texts. Allen & Overy (now A&O Shearman) became its anchor enterprise client in early 2023. The OpenAI Fund backed Harvey early, giving it privileged access to GPT-4 fine-tuning. By 2024 Harvey was the most-funded legal AI startup globally.
Company Timeline
5 milestones- 2022Founded by Winston Weinberg and Gabriel Pereyra (ex-DeepMind)
- 2023Allen & Overy partnership — first Big Law firm AI deployment at scale
- Feb 2024Series C: $100M at $715M valuation
- Dec 2024Series D: $300M at $3B valuation; 200+ law firm clients
- 2025Expanded to accounting/tax (PwC); 100+ jurisdictions supported
Products & Services
5- Harvey for Law Firms
- Harvey for In-House Counsel
- Harvey for Accounting & Tax
- Harvey Document Review
- Harvey Research
People & ecosystem
Key People
- Winston Weinberg (CEO & Co-founder)
- Gabriel Pereyra (CTO & Co-founder)
Key Investors
- OpenAI Fund
- Sequoia Capital
- Kleiner Perkins
- GV (Google Ventures)
- Salesforce Ventures