LegalOn secures $50m to scale legal AI globally

By Vriti Gothi

LegalOn Technologies, an AI-powered legal solutions provider for contracting, has raised $50 million in a Series E funding round, bringing its total capital raised to $200 million.

The round was led by Growth Equity at Goldman Sachs Alternatives, with participation from existing investor World Innovation Lab (WiL) and new strategic partners including Mori Hamada, Mizuho Bank, and Shoko Chukin Bank.

This investment marks a significant milestone in LegalOn’s international growth journey and reaffirms investor confidence in its leadership within the rapidly expanding legal AI sector. The capital will fuel the company’s next phase of innovation, focusing on agentic AI development, product expansion, and market acceleration across the US, UK, and Asia.

LegalOn is redefining the legal contracting process through advanced, purpose-built AI. Since its founding in 2017, the company has addressed longstanding inefficiencies in legal workflows, optimising speed, accuracy, and risk management. Its flagship solution, Review, leverages proprietary legal datasets and attorney-crafted playbooks to identify contractual risks and suggest revisions in real-time, reducing review time by up to 85% while enhancing compliance and precision.

With over 7,000 enterprise customers globally, a 40% year-on-year increase, LegalOn continues to scale rapidly. In Japan, the company serves 25% of all publicly listed firms and 87% of the country’s Fortune 500, including 40 multinational organisations.

Earlier this month, LegalOn unveiled upgrades to its legal AI suite and announced its expansion into matter management. This move extends the platform’s reach from contract review to end-to-end execution of legal tasks. The upcoming launch of AI-powered legal agents will allow in-house teams to manage requests, workflows, and resolutions seamlessly through a unified digital interface.

In a parallel announcement, LegalOn confirmed a strategic collaboration with OpenAI, the developer of ChatGPT. The partnership will integrate OpenAI’s enterprise-grade language models with LegalOn’s proprietary legal infrastructure, enabling faster and more intelligent product development across core workflows.

Engineering teams from both organisations are co-developing a new generation of legal AI agents designed to be highly adaptive, context-aware, and secure driving operational transformation while maintaining rigorous standards of human oversight.

Nozomu Tsunoda, co-founder and Group CEO of LegalOn, said, “From day one, we’ve focused on building solutions that help in-house legal teams move faster, reduce risk and drive greater business impact. Collaborating with OpenAI puts us at the forefront of innovation and accelerates our mission to transform legal work with trustworthy AI, enabling us to bring even more advanced tools that meet the high standards our customers expect. We’re excited to be able to deliver an unprecedented experience through this collaboration.”