PROSE Award Winner · Donner Prize Shortlist

The Legal Singularity

How artificial intelligence can make law radically better.

By Abdi Aidid & Benjamin Alarie

About the Book

Legal prediction using artificial intelligence has the potential to radically transform the law, our legal institutions, and our societies for the better. Aidid and Alarie examine the law's current shortcomings and explore how legal prediction can address them.

They describe a future state of functionally complete law: a world in which the law is more complex and yet dramatically clearer and fairer than it is today. This must-read book explores how AI-driven legal change may lead to the legal singularity, and will inform the way you think about the future of law in the presence of advanced artificial intelligence.

Praise

“

A powerful and important book. The fundamental insight, that artificial intelligence will transform not just the specific content of legal rules but the general nature of law, is surely correct. Essential reading for legal theorists.

Daniel Markovits Guido Calabresi Professor of Law, Yale Law School

“

This beautifully written book makes a compelling case that law as we know it will change dramatically, and that justice will be the biggest beneficiary of that change. The opportunity that singularity presents is the chance to deliver, finally, on law's promise, a promise it has so far left unfulfilled.

Lawrence Lessig Roy L. Furman Professor of Law and Leadership, Harvard Law School

“

Timely, challenging, and profound. The Legal Singularity is an important contribution to the current debate on the extent to which it is possible and desirable for AI to be widely deployed in the delivery of legal and court services. A book that deserves to be read widely by naysayers and evangelists alike.

Richard Susskind OBE KC (Hon) Author of Tomorrow's Lawyers

The Authors

Professor Abdi Aidid

B.A. (Toronto), J.D. (Yale Law School), LL.M. (Toronto)

Abdi Aidid is an Assistant Professor at the University of Toronto Faculty of Law and the Canada Research Chair in Artificial Intelligence and Access to Justice. In 2024–2025 he was a Visiting Associate Professor at Yale Law School, and he is currently the Ian D. Shugart Visiting Scholar at the Canada School of Public Service. Before entering academia, he practised litigation at Covington & Burling LLP in New York and Davies Ward Phillips & Vineberg LLP in Toronto, and served as Vice President, Legal Research at Blue J.

Professor Benjamin Alarie

B.A. (Laurier), M.A., J.D. (Toronto), LL.M. (Yale Law School)

Benjamin Alarie holds the Osler Chair in Business Law at the University of Toronto. He is co-founder and CEO of Blue J, an AI-native tax research platform used by thousands of firms worldwide. He clerked at the Supreme Court of Canada for Justice Louise Arbour and coined the term “the legal singularity” in 2016. With Samuel Becher, he is co-author of a successor volume, Superjustice (Oxford University Press, 2026).