A legal AI model built through federated learning

Privacy-preserving, collaborative training across rights-cleared private legal sources—without sharing or centralizing raw data.

Law firms, companies, and individuals retain control of their data while enabling the model to learn from it—and share in the revenue it generates.

The whole arrangement, in four lines
Documents you upload
None. Not encrypted, not temporarily, not at all.
What leaves your environment
Model updates — the pattern, not the paper.
What you receive
A share of metered usage, on a published formula.
Leaving
Any time. Nothing of yours was ever ours to keep.
The problem

The world's legal knowledge is locked away

The most valuable legal knowledge—negotiated clauses, practical judgment, and decades of deal history—sits inside private document systems.

It cannot be published or shared with outside AI models because it is confidential. As a result, legal AI learns from public records but misses the private expertise that drives real-world decisions.

Organizations are sitting on immensely valuable knowledge, yet their archives remain cost centers.

How it works

The learning is federated. The data isn't.

Step 01

Your documents stay where they are

You don't upload anything. Training runs where your files live, under your control. OpenLegal never has your documents.

Step 02

Only the learning joins the model

What comes out of training is the pattern, not the paper. It's engineered and audited so that no one — including us — can pull your text back out of it.

Step 03

You get paid when the model works

Every product built on OpenLegal pays to use it. Metered usage, a published formula, a payment every quarter.

What crosses the boundary Your documents and the training both sit inside a thick boundary and stay there. Only model updates cross out to the shared model, and a revenue share comes back in. YOUR ENVIRONMENT Your documents. They never move. Training runs here, beside them. LEARNING REVENUE SHARE THE SHARED MODEL
Two things cross the boundary. Documents are not one of them.

The knowledge already exists. It's been in the drawer for a hundred years.

OpenLegal opens the drawer without taking anything out.