Harvey AI, a specialized artificial intelligence platform for legal professionals, has secured $300 million in Series E funding, catapulting its valuation to $5 billion. This milestone comes just four months after its previous $300 million Series D round that valued the company at $3 billion, demonstrating extraordinary investor confidence in the legal tech sector.
The latest funding round was co-led by Kleiner Perkins and Coatue, with participation from several prominent investors including Sequoia Capital, GV (Google Ventures), OpenAI Startup Fund, and REV, the venture capital arm of RELX Group which owns LexisNexis.
Founded in 2022 by former lawyer Winston Weinberg and AI researcher Gabriel Pereyra, Harvey has experienced remarkable growth. The company's annualized revenue reached $75 million in April 2025, up from $50 million earlier this year, and is projected to exceed $100 million within months. Its client base has expanded to 337 organizations across 53 countries, including the majority of top 10 U.S. law firms and corporate legal departments at major companies like KKR and PwC.
"If you expand as quickly as we are, you just need to do raises like this," said Weinberg, Harvey's CEO and co-founder. With the new funding, Harvey plans to double its headcount to over 680 employees and expand beyond legal services into other professional domains such as tax accounting.
Harvey's platform leverages advanced language models from OpenAI, Anthropic, and others, combined with specialized legal workflows. Its flagship product, Harvey Assistant, enables legal teams to automate research, document drafting, and contract analysis using natural language prompts. The company recently launched Workflow Builder, allowing legal teams to create customized AI workflows that capitalize on their proprietary knowledge.
The investment represents one of the largest in legal-specific AI technology, highlighting the growing importance of specialized AI tools for professional services. As Weinberg notes, "I think it'll get to a certain point where you aren't able to compete—or able to support large corporations—unless you are using tools like this." With global investments in legal technology reaching $2.1 billion in 2024 and February 2025 seeing one of the highest investment totals in U.S. legal tech history, Harvey's funding underscores the maturation of vertical AI applications in transforming traditional industries.