Last reviewed on October 3, 2026.
Update, October 2026: this article first covered Harvey's December 2025 round at an $8 billion valuation. Harvey has since raised twice more, and we have rewritten the piece to remove unverified claims (such as specific product-usage figures, productivity percentages and pricing ranges) that appeared in the original version.
Harvey funding timeline
| Date | Round | Amount | Valuation | Lead investor(s) |
|---|---|---|---|---|
| Nov 2022 | Seed | $5M | – | OpenAI Startup Fund |
| Apr 2023 | Series A | $21–23M | – | Sequoia Capital |
| Dec 2023 | Series B | $80M | $715M | Elad Gil, Kleiner Perkins |
| Jul 2024 | Series C | $100M | $1.5B | GV |
| Feb 2025 | Series D | $300M | $3B | Sequoia Capital |
| Jun 2025 | Series E | $300M | $5B | Kleiner Perkins, Coatue |
| Dec 2025 | Series F | $160M | $8B | Andreessen Horowitz |
| Mar 2026 | – | $200M | $11B | GIC, Sequoia Capital |
| Sep 2026 | – | $550M | $15.5B | Diffusion, Lightspeed Venture Partners |
Sources: Harvey's own announcement of the September 2026 round, CNBC's report on the March 2026 round, and public reporting on earlier rounds. Amounts are as announced; valuations are post-money where reported.
What Harvey is
Harvey was founded in 2022 by Winston Weinberg and Gabriel Pereyra and is based in San Francisco. It builds generative-AI software for law firms and in-house legal teams, using large language models adapted for legal work. Its products cover legal research and question answering, document analysis and drafting, configurable workflows, and integrations with tools lawyers already use, such as Microsoft Word and Outlook. In its September 2026 announcement, Harvey said its customers included 80% of the Am Law 100 and five of the Fortune 10.
Why the valuation keeps rising
- Adoption by large firms. Harvey has focused on the largest law firms and corporate legal departments, which buy at scale.
- Investor appetite for applied AI. Investors have backed companies that build products on top of foundation models for specific professions.
- Competition. Thomson Reuters (CoCounsel, from its Casetext acquisition), LexisNexis (Lexis+ AI and Protégé) and Clio (which bought vLex and its Vincent AI) are all investing heavily, which raises the stakes for independent players.
What a valuation does not tell a buyer
A high valuation reflects investor expectations, not whether the product suits your firm. Before buying Harvey or any competitor:
- Run a pilot on your own matters and measure time saved and error rates against a baseline (see our ROI framework).
- Check data handling: where data is stored, whether it is used for training, retention and ethical walls (see vendor due diligence).
- Ask how outputs are grounded and cited, and how lawyers are expected to verify them.
- Get written pricing. Harvey does not publish list prices; costs depend on seats and contract scope.
Harvey vs other options
Firms that mainly need research with a citator often start with Westlaw with CoCounsel or Lexis+ AI. Teams focused on contracts may get more from a CLM platform. For a broader comparison of general assistants, see ChatGPT vs Claude vs Copilot for lawyers and our piece on agentic AI in legal practice.
Frequently asked questions
What is Harvey AI's valuation?
Harvey was valued at $15.5 billion in a $550 million round announced on 9 September 2026, up from $11 billion in March 2026 and $8 billion in December 2025.
Who founded Harvey AI?
Winston Weinberg and Gabriel Pereyra founded Harvey in 2022. The company is based in San Francisco.
How much does Harvey cost?
Harvey does not publish list prices. Pricing is negotiated based on seats, products and contract terms.