Benjamin Alarie is co-founder and CEO of Blue J, an AI-powered tax research platform serving more than 6,000 firms as of September 2026. He holds the Osler Chair in Business Law at the University of Toronto.

He has spent more than a decade applying artificial intelligence to tax and law. In 2016 he coined the term "legal singularity" in the University of Toronto Law Journal, arguing that artificial intelligence would eventually make legal reasoning far more predictable, coherent, and accessible. He has since developed the thesis in two books and put it into practice at Blue J.

Superjustice (Oxford University Press, July 2026), co-authored with Samuel I. Becher, examines how AI can reshape public legal systems. The Legal Singularity (University of Toronto Press, 2023), co-authored with Abdi Aidid, won the 2024 Association of American Publishers PROSE Award in Legal Studies and Criminology and was shortlisted for the Donner Prize.

He has held the Osler Chair since 2016 and has been a full professor since 2018. He holds an LLM from Yale Law School and clerked at the Supreme Court of Canada for the Honourable Madam Justice Louise Arbour.