# LegalOn Technologies

> LegalOn Technologies is a legal AI company that builds contract-review and legal-workflow software for in-house legal teams. Founded in Tokyo in 2017 by former corporate lawyers Nozomu Tsunoda and Masataka Ogasawara, it pairs large language models with attorney-authored playbooks so its flagship product, Review, flags risks and suggests edits inside Microsoft Word. Used by more than 7,000 organizations across Japan, the U.S. and the U.K. - including roughly a quarter of Japan's public companies - LegalOn raised a $50M Series E led by Goldman Sachs in July 2025 and struck a technology partnership with OpenAI to build legal AI agents.

- **Founded:** 2017
- **Headquarters:** Tokyo, Japan (US HQ: San Francisco, California)
- **Founders:** Nozomu Tsunoda (Co-Founder & Group CEO), Masataka Ogasawara (Co-Founder)
- **Team size:** ~600 employees
- **Products:** Review, AI Playbooks, LegalOn Assistant, Matter Management, Translate
- **Notable:** Used by more than 7,000 organizations worldwide, Market leader in Japan with ~25% of public companies as customers, Serves 87% of Japan's Fortune 500 companies

## Products & services

- **Review** — Flagship AI contract review tool that analyzes agreements clause by clause, flags risks, and suggests edits based on attorney-authored playbooks and each customer's legal standards. Cuts review time by up to 85%.
- **AI Playbooks** — A library of 50+ attorney-authored playbooks for NDAs, MSAs and other standard agreements, plus custom playbooks so teams can encode their own legal positions.
- **LegalOn Assistant** — Generative AI assistant for legal questions, drafting help and document analysis within the legal workflow.
- **Matter Management** — Tooling to intake, track and manage legal matters and requests across the in-house team.
- **Translate** — AI-powered contract translation supporting 28 languages for cross-border review.
- **Word Add-in** — Integration that brings LegalOn's review and revision directly into Microsoft Word where legal teams already work.
- **Legal AI Agents** — Advanced agentic AI for complex legal workflows, being developed jointly with OpenAI engineers.

## Achievements

- Used by more than 7,000 organizations worldwide
- Market leader in Japan with ~25% of public companies as customers
- Serves 87% of Japan's Fortune 500 companies
- Raised over $200M total since 2017
- $50M Series E led by Goldman Sachs Growth Equity (July 2025)
- Non-equity technology partnership with OpenAI to build legal AI agents
- US and UK business quadrupled in a single year
- Recognized in industry awards including LegalTech Breakthrough and Theorem legal AI leader rankings

## Latest updates

- **2025-07** — Closed $50M Series E led by Goldman Sachs Growth Equity, bringing total funding above $200M.
- **2025-07** — Announced a non-equity technology partnership with OpenAI to co-develop advanced legal AI agents.
- **2025-09** — Global CEO Daniel Lewis featured on the LawNext podcast discussing the company's journey and consistent AI for contract review.

## Links

- Website: https://legalontech.com
- LinkedIn: https://www.linkedin.com/company/legalon-technologies
- Twitter/X: https://twitter.com/LegalOnTech
- Facebook: https://facebook.com/legalontechnologies/

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Profile page: https://yespress.io/legalon-technologies
Published by YesPress — https://yespress.io
Last updated: 2026-07-14