The Atticus Project

Open-Source Dataset of Legal Contracts for AI

CUAD Labeling Handbook

The Labeling Handbook for Contract Understanding Atticus Dataset (Commercial Contracts)(CUAD) contains selected guidelines developed by The Atticus Project to guide our volunteer annotators in curating (CUAD)(Commercial Contract) v1 that was released on March 1, 2021. The Handbook can be accessed free of charge here under a CC BY-NC-SA 4.0 license, subject to the additional terms included in the Handbook.

CUAD (Commercial Contracts)

A corpus of 13,000+ labels in 510 commercial legal contracts with rich expert annotations. The dataset has been manually labeled under the supervision of experienced lawyers to identify 41 types of legal clauses in commercial contracts that are considered important in contract review in connection with a corporate transaction, including mergers & acquisitions, corporate finance, investments, initial public offering, etc.

Download CUAD v1 free of charge here.  CUAD and Atticus Labels are licensed under CC BY 4.0. Check out the code for replicating the results and the trained model here.

About Us

The Atticus Project is a non-profit organization whose mission is to harness the power of AI to accelerate accurate and efficient contract review.

What's New
  • The CUAD Labeling Handbook is now available. Check it out free of charge here.  
  • Our paper on CUAD is accepted by NeurIPS 2021, the 35th Conference on Neural Information Processing Systems (Datasets and Benchmarks Track)! 
  • We are working on a new dataset of M&A agreements, which is scheduled for public release in January 2022.
  • Congratulations to our 30+ summer interns around the world for successfully completing the 2021 Summer Program! Thanks to our 20+ attorney volunteers for your generous support!
  • Welcome to our ~20 fall interns who started on August 23, 2021!
  • Application to the Atticus Open Data Fellow Programs is still open! Apply for our Atticus Open Data Executive Fellow Program here, or our Student Fellow Program here.
What We Do

The Atticus Project is a grassroots movement by experienced attorneys in leading in-house legal departments and law firms aiming to achieve accurate and efficient contract

review using AI.

How To Participate

We are on a path to change the legal industry forever by leveraging AI. Be a part of the Atticus movement. Check out how you can help here. Follow us on LinkedIn at or email us at

The Atticus White Paper

Openness and transportability are at the core of The Atticus Project. Please refer to this White Paper for more information on how we unite the legal and AI communities to get there.