档案库 · 开发与企业工具 · 产品决策 · 2017-2025
LegalOn:以律师为基础的合同AI助力其成为日本最快达到100亿日元ARR的AI公司
由两位前森滨田律师事务所律师在东京创立,LegalOn的AI合同审阅在2025年10月达到100亿日元ARR,服务超过7000个团队,并完成由高盛领投的5000万美元E轮融资。
LegalOn Technologies
做的是什么生意
LegalOn sells AI software for in-house legal teams: its Review tool reads contracts, flags risks and suggests edits from attorney-built playbooks, with matter management and related workflow tools layered on for corporate legal departments.
起因
Nozomu Tsunoda and Masataka Ogasawara, former corporate lawyers at Tokyo's Mori Hamada & Matsumoto, founded LegalOn in 2017 after living through slow, error-prone manual contract review. They spent two years on R&D and launched their first AI contract-review product in 2019, using attorney-built playbooks and each customer's legal standards to identify risks and suggest revisions; the product found fast adoption in Japan's corporate legal market.
经过
By mid-2025 LegalOn was used by about 7,000 organizations in Japan, the US and UK, led Japan with 25% of listed companies, and said its US and UK business had quadrupled in a year. On 2025-07-24 it closed a $50 million Series E led by Goldman Sachs Growth Equity, with World Innovation Lab continuing and Japan's Mori Hamada & Matsumoto law firm, Mizuho Bank and Shoko Chukin Bank joining, bringing total funding to over $200 million; earlier backers include SoftBank Vision Fund, HSG, JAFCO and MUFG. It also announced a non-equity engineering partnership with OpenAI to build legal AI agents grounded in its proprietary legal content, and opened US and UK offices.
结果
On 2025-10-13 LegalOn announced it had surpassed ¥10 billion in ARR, roughly $67M, in about six and a half years since its first product launch, making it the fastest AI company founded in Japan to reach that milestone. It reports more than 7,000 legal teams as customers, covering over 30% of Japan's public companies and 87% of its Fortune 500 firms, and continues to expand in the US and UK; no exit or shutdown has been announced.
背景
LegalOn于2017年在东京创立,创始人是Nozomu Tsunoda和Masataka Ogasawara,两位曾在森滨田松本律师事务所从事企业法务工作的律师,亲历了手动合同审阅的缓慢与易错。他们的策略是:律师只有在AI基于律师起草的内容时才会信任AI,为此经过两年研发,于2019年推出了合同审阅AI,基于50多个律师构建的规则库以及每个客户自身的法律标准来识别风险、提出修改建议。
该模式首先在日本得到验证:截至2025年年中,约有7000个法务团队使用该软件,日本25%的上市公司成为客户,美英业务一年翻两番。2025年7月,LegalOn完成5000万美元E轮融资,由高盛成长股权领投,总融资超过2亿美元,并宣布与OpenAI建立非股权工程合作,在自有内容基础上构建法务AI代理。
2025年10月13日,LegalOn宣布其年经常性收入超过100亿日元(约6700万美元),距首款产品推出仅六年半,成为日本创立的最快达到该里程碑的AI公司,服务超过7000个法务团队,覆盖日本超过30%的上市公司以及87%的日本财富500强企业。目前公司总部位于旧金山和东京,并将新资金用于AI代理产品和美英市场拓展。
这件事要成立,得有什么
- 创始人将自己旧日的工作自动化:两位前森滨田律师为自身经历过的痛点构建了工具,使其在规避风险的法务买家面前更具可信度。
- 将AI扎根于50多个律师构建的规则库以及每个客户的标准,使产出在普遍性模型错误难以被接受的职业中具备实用性。
- 它首先攻克保守的日本法务市场——截至2025年年中渗透25%的上市公司,至10月超过30%——随后将这一策略输出至美英市场,业务增长四倍。
- OpenAI合作使其能提前获取模型能力,同时真正的护城河——专有法律内容和工作流集成——依旧掌握在LegalOn手中。
可借鉴之处
在专业AI领域,护城河来自专有领域内容和工作流信任,而非模型本身:大语言模型是通用商品,律师构建的规则库是让法务团队付费并留存的关键。
后续进展
截至2025年10月13日,LegalOn正在运营并加速扩张,已融资超过2亿美元,服务日本、美国和英国的7000多个法务团队。在日本,报道称超过30%的上市公司和87%的日本财富500强企业是其客户;在2025年7月E轮融资前一年间其美英业务增长四倍。总部位于旧金山和东京,该公司正在与OpenAI工程师一道开发AI代理产品,包括2025年7月推出的案件管理功能。目前尚无退出、收购或关闭的公告。
资料来源
- SoftBank-backed LegalOn lands $50M to streamline legal workflows with AI
- LegalOn Breaks Record as Fastest AI Company Founded in Japan to Reach ¥10 Billion ARR
- LegalOn raises $50m Series E
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