LegalOn Technologies, a Tokyo-based AI legal software startup, has raised $50 million in Series E funding to accelerate development of its AI contract review platform and scale its international operations.
Founded in 2017 by ex-corporate lawyers Nozomu Tsunoda and Masataka Ogasawara, LegalOn’s flagship product, Review, analyzes legal contracts to flag risks and suggest edits based on lawyer-built playbooks. The company claims it cuts review time by up to 85% and is used by over 7,000 organizations — including 25% of Japan’s public companies.
Goldman Sachs, WiL, and new Japanese investors back the round
The Series E was led by Goldman Sachs’ growth equity fund, with participation from existing investor World Innovation Lab (WiL) and new backers including law firm Mori Hamada & Matsumoto, Mizuho Bank, and Shoko Chukin Bank. The startup declined to share its current valuation.
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AI agents, Matter Management, and OpenAI collaboration
The funding will support new AI legal agents and tools like Matter Management, which helps legal teams coordinate contract requests and collaborate across departments. LegalOn also announced a technical partnership with OpenAI, giving its engineers early access to ChatGPT models to build more advanced tools grounded in legal expertise.
$200M+ raised to date; not trying to replace lawyers
With this round, LegalOn has raised over $200 million from investors including SoftBank Vision Fund, HSG (formerly Sequoia Capital China), JAFCO, and MUFG Bank. Despite the AI hype, CEO Daniel Lewis emphasized that LegalOn’s mission is to support — not replace — lawyers. “The lawyers who lean into that responsibility are seeing the most extraordinary leverage from AI right now,” he said.
