Crosby Intelligence legal AI research
Crosby Intelligence legal AI research
June 17th, 2026
After coding, law is the trillion-dollar frontier that will be most transformed by AI.
Today, models are experts in processing facts; they can summarize case law or draft memos. But they lack judgment. What counts as “too” much risk? When is it worth bluffing to get a deal closed? When you hire a senior partner, making these calls is exactly what you’re paying for.
Explosive advances in AI's ability to write code and solve math problems were unlocked by verifiable rewards: problems where there is one right answer. Law has very few of these.
How do you define quality when there are many good answers? Or where the best answer depends on your opponent, as much as the game itself? How do you create an answer key without collapsing the spectrum of taste into one approach?
That’s why we’re launching Crosby Intelligence, a dedicated organization within Crosby focused on expanding the frontier of AI in legal, and empowering our law firm.
We will publish benchmarks on our field’s hardest problems, host conversations with leading scholars and practitioners, and fund open frontier research through grants.
Our goal is to define what great legal work looks like, and design agents that (actually) think like lawyers. It’s day 638 one at Crosby.
John SarihanCo-founder, CTO
The Crosby Intelligence Fellowship
The hardest open problems in legal AI
Law is the next frontier for AI research. We've written up the fascinating open questions we'd love to see solved. If they pull at you, we want to hear from you.
With support from
Crosby RedlineBench
The standard for evaluating how frontier models perform the workflow of senior commercial lawyers in live contract negotiations.
GPT-5.5
50.5%
GPT-5.5
Claude Fable 5
47.3%
Claude Fable 5
Gemini 3.5 Flash
45.1%
Gemini 3.5 Flash
Claude Opus 4.8
44.4%
Claude Opus 4.8
Speaker series
Monthly conversations with researchers and builders
Guest speakers joining Crosby Intelligence across the second half of 2026.
With support from
July 1Public Unveiling
Parag Agrawal
Parallel Web Systems
AugustLegal AI Research
Peter Henderson
Princeton Polaris Lab
OctoberApplied AI
Rahul Sengottuvelu
Ramp Labs
DecemberLegal AI Frontier
Neel Guha
Columbia University
JanuaryTraining Frontier Models
Peyton Walters & Jason Mancuso
Modal
Work on a hard research problem that can transform a foundational industry
Join a research team grappling with one of the world's most complex and impactful data sets. A place where you can sit next to your users every day, and get closer to the metal of how companies negotiate and close deals that grow GDP.
Work in unique, real-world data
Work with completed contracts and all of their prior iterations written by executives at game-changing companies.
Sit right next to domain experts
Work side by side with elite lawyers who want to transform one of society's most important industries. Don't work in an ivory tower.
Improve the API of commerce
For millennia, the business world has run on contracts. You can remove friction and make expert legal review more abundant so more deals get done.
Careers at Crosby
We're building an industry-changing law firm that pushes the frontier between human and machine. Read about our open roles, our story, and how we approach building Crosby.