Harvey is a generative AI platform built for legal and professional services work, used by large law firms and corporate legal departments. It provides an assistant that can answer legal questions, draft and revise documents, and work across a firm's own documents and matter files, along with more specialized capabilities for contract analysis, due diligence review of large document sets, regulatory and compliance research, and litigation tasks, and it has been building toward agents that carry out multi-step legal workflows. Harvey trains and tunes its systems with input from practicing lawyers and emphasizes the security, confidentiality, and citation requirements that legal work demands, so outputs can be traced to sources. It partners with foundation model providers and integrates with the research databases and document systems firms rely on. Founded in 2022, Harvey has grown very quickly, reaching a valuation around eleven billion dollars, roughly two hundred million dollars in annual recurring revenue, and use by over a hundred thousand lawyers across more than a thousand organizations. Harvey is sold as a paid enterprise platform, priced per user on annual contracts, with deployment and support geared to large firms and legal teams rather than individual practitioners.