Harvey is now legal AI's clearest breakout. The San Francisco company said on Sept. 9 that it has raised $550 million in a fresh round at a $15.5 billion post-money valuation, co-led by Diffusion and Lightspeed Venture Partners — a 40% valuation jump from the $11 billion mark it hit in March.
A star-studded cap table gets bigger
Sequoia, Kleiner Perkins, Andreessen Horowitz, Coatue, Conviction, Elad Gil, Evantic, GIC, Goldman Sachs Alternatives, Verified Capital and WNDR all followed on. Sapphire Ventures and Whale Rock joined Diffusion and Lightspeed as new backers. Harvey co-founders Winston Weinberg and Gabe Pereyra said the capital will be poured into hiring and product depth so legal teams can “own their intelligence” rather than rent it from foundation-model vendors.
ARR past $400M, product surface widening
Harvey's annual recurring revenue climbed past $400 million and its customer base grew to more than 3,000 organizations, including 80% of the Am Law 100, 20% of the Fortune 500 and five of the Fortune 10. The raise lands weeks after Harvey introduced Harvey Tenet, its first post-trained open-weight model, and Harvey LAB, a Legal Agent Benchmark scoring how well AI performs real litigation, transactional and in-house workflows.
Where the money goes next
The company is doubling down on domain-specific agents that execute complex legal work end-to-end, expanding Vault document intelligence, Knowledge research and Spaces collaboration across firm boundaries. Command Center is being pitched to legal chiefs as an analytics layer to lead firmwide AI transformation. Fresh capital positions Harvey to defend against competitive pressure from Thomson Reuters, LexisNexis and OpenAI-backed challengers, and follows a wave of AI mega-rounds — including Mistral's €3B Series D, Cognition's $2B Series E and AfterQuery's $3.2B unicorn print.
Reporting based on coverage from Harvey, Bloomberg and TechCrunch.