Legal artificial intelligence for contracting company LegalOn Technologies Inc. announced today that it has raised $50 million in a new late-stage funding round to scale up its agentic AI product development and go-to-market efforts.
Founded in 2017 by former corporate attorneys Nozomu Tsunoda and Masataka Ogasawara in Japan, LegalOn was created with the aim of tackling inefficiencies in legal contracting. Beginning under the name LegalForce in its early Japanese operations, the company quickly became one of Japan’s most adopted AI contract review solutions, serving thousands of clients before expanding to the U.S. in 2022 and rebranding globally as LegalOn.
LegalOn’s offers AI-powered contract review with the unsurprising name of “Review.” The tool analyzes contracts, both incoming third-party documents and first-party redlines to identify legal risks based on a set of attorney-built playbooks and a company’s custom standards. Review then generates precise redlines, reducing manual review time by up to 85% while preserving legal quality and consistency.
Earlier this year, LegalOn launched My Playbooks, a tool that allows legal teams to codify their own organizational standards, from preferred language to fallback positions, into AI-driven review workflows. The tool delivers personalized, consistent contract review from day one and complements LegalOn’s library of more than 50 prebuilt expert playbooks.
LegalOn has also recently expanded beyond contract drafting and review and into matter management, a functionality added mid‑July 2025. The capability allows teams to intake legal requests via email, Slack or web forms, assign tasks, track progress and maintain audit trails.
The Series E round was led by Growth Equity at Goldman Sachs Alternatives, with World Innovation Lab Inc., Mori Hamada & Matsumoto, Mizuho Bank Ltd. and The Shoko Chukin Bank Ltd. also participating.
“By combining advanced AI with deep legal expertise, LegalOn is reinventing the contracting process and empowering legal departments to work faster and more strategically,” said Stephanie Hui, global co-head of Growth Equity at Goldman Sachs Alternatives. “As they rapidly gain traction across global markets, we believe LegalOn is uniquely positioned to define the future of AI-powered legal technology.”
Alongside the funding announcement, LegalOn also announced a new partnership with OpenAI that aims to redefine corporate legal workflows by combining OpenAI’s ChatGPT Enterprise and application programming interface with LegalOn’s legal domain expertise and proprietary legal data.
The collaboration gives LegalOn access to OpenAI’s cutting-edge models, with an aim to enable faster, smarter product development with advanced AI technology.
Image: LegalOn
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