Rosen AI is a legal technology company that develops artificial intelligence tools for document analysis and legal research. Founded in 2021 and headquartered in New York City, the company focuses on applying large language models and natural language processing to the legal sector, aiming to reduce time spent on routine tasks such as contract review and case law retrieval. As of 2025, Rosen AI has raised $45 million in funding and serves over 200 law firms and corporate legal departments.
History
Rosen AI was founded in 2021 by former litigation associates and software engineers who identified inefficiencies in traditional legal research methods. The company's initial product, launched in early 2022, was a contract analysis tool that used Transformer (architecture)-based models to extract key clauses and flag potential risks. In 2023, Rosen AI expanded into case law research, integrating a proprietary database of over 10 million court decisions. The company raised a $12 million Series A round in 2023, led by a prominent venture capital firm, followed by a $33 million Series B in 2025.
Technology
Rosen AI's platform is built on deep learning architectures, specifically Transformer (architecture) models fine-tuned on legal corpora. The system employs attention mechanisms to identify relevant passages in lengthy documents, and it uses transfer learning to adapt to different legal jurisdictions. Unlike general-purpose generative AI tools, Rosen AI's models are trained with a focus on factual accuracy and citation verification, reducing hallucinations. The platform also incorporates reinforcement learning from human feedback to improve output quality based on attorney corrections.
Products and Services
Rosen AI offers two main products: ContractIQ and CaseFinder. ContractIQ automates contract review, extracting obligations, deadlines, and renewal terms, and it integrates with popular document management systems. CaseFinder provides natural language search over federal and state case law, returning ranked results with pinpoint citations. Both products are available via a web interface and API, and they support multiple languages, including English, Spanish, and French. In 2024, Rosen AI introduced a collaboration feature that allows legal teams to annotate and share AI-generated summaries.
Market and Reception
Rosen AI competes with other legal tech startups and established players like LexisNexis and Westlaw. The company has been recognized in industry publications for its accuracy in contract clause identification, with a reported 95% precision rate in internal benchmarks. Clients include mid-sized law firms and in-house legal departments in the United States and Europe. Rosen AI has not disclosed revenue figures, but it reports a 150% year-over-year growth in active users as of 2025.
Future Directions
Rosen AI plans to expand into e-discovery and regulatory compliance, and it is exploring partnerships with academic institutions to improve model interpretability. The company is also developing a tool for predicting case outcomes based on historical data, though this feature is still in beta. Rosen AI emphasizes ethical AI use, and it has published guidelines for responsible deployment in legal settings.