Harvey, the legal AI platform used by law firms and corporate legal teams worldwide, has raised $300 million in a Series E funding round, bringing its valuation to $5 billion. The round was co-led by Kleiner Perkins and Coatue, with participation from existing investors including Sequoia, GV, DST Global, Conviction, Elad Gil, OpenAI Startup Fund, Elemental, SV Angel, and REV, the venture group linked to LexisNexis owner RELX.
Founded less than three years ago, Harvey delivers AI solutions tailored to the legal profession, serving both top-tier law firms such as Paul, Weiss and in-house departments at major corporates including KKR and PwC. The company has grown to over 340 employees and now serves clients in 53 countries. With the fresh capital, Harvey plans to double its team, expand globally, and move into adjacent verticals such as tax and accounting.
Scaling legal AI with deep domain expertise
Harvey’s platform leverages large language models (LLMs) from OpenAI, Anthropic, and others, layered with proprietary legal workflows and firm-specific data. Its tools are custom-trained using confidential client materials, which remain private and secure. Over 10% ofHarvey’s team is focused on security, and the company maintains industry-standard privacy practices and conducts regular third-party security audits.
CEO and co-founder Winston Weinberg, a lawyer by training, emphasized Harvey’s partnership-driven approach with the legal profession. “If you expand as quickly as we are, you just need to do raises like this,” Weinberg said. “We’re building a company that lawyers trust by working alongside them, not replacing them.”
Harvey’s New York headquarters features a team that includes a notable number of practising lawyers embedded across functions, helping tailor the AI to real-world legal use cases.
Seperate careers join to create legal AI- Harvey
Harvey was founded by Winston Weinberg and Gabe Pereyra, former flatmates with a shared drive to reinvent legal work.
Winston studied law at USC Gould and later joined O’Melveny & Myers as a litigation associate. While working, he noticed LLMs entering legal workflows. Frustrated by their limits, he had an idea. He reached out to Gabe, a computer science graduate from USC and former neuroscience PhD student at Oxford. Gabe had already worked at DeepMind and Meta as a research scientist. He saw the potential immediately.
The pair started building. Within months, they launched Harvey-an AI platform shaped by deep legal and technical knowledge.
Investor confidence and competitive lead
Investors point to Harvey’s performance as a model for vertical AI startups. “It sets the blueprint for how a vertical AI enterprise company can build and execute,” said Ilya Fushman, partner at Kleiner Perkins and co-lead of the round.
Harvey now holds the highest publicly reported valuation in the legal AI category, surpassing Ironclad (valued at $3.2 billion in 2022) and Clio ($3 billion in 2024). Its rapidly growing client base of 337legalorganizations reflects accelerating adoption in a $1 trillion global legal services market.
Toward the future of professional services AI
While AI in law has historically faced challenges around adoption, Harvey’s traction and funding mark a significant shift. The company’s roadmap includes broader professional services integration, targeting tax, compliance, and operational legal functions.
The Series E capital will enable Harvey to expand its engineering and go-to-market teams, develop new product capabilities, and scale its operations in key global markets.
