Gavin Leech

New York, NY

Regrantor

Bio

Updated 05/21/26

Researcher, writer, and co-founder of Arb Research, a consultancy that does empirical work, conceptual work, and forecasting across AI, policy, and science. He holds a PhD in AI from the University of Bristol, where his dissertation focused on tensorised probabilistic programming for approximate inference. He is a fellow at the Cosmos Institute, the Foresight Institute, and the Leverhulme Centre for the Future of Intelligence at Cambridge, and was a 2024 fellow at the International Strategy Forum. His research spans machine learning, metascience, epidemiology, and AI safety, and he has published in Science, PNAS, and NeurIPS. He co-authored The Scaling Era: An Oral History of AI, 2019-2025 with Dwarkesh Patel, published by Stripe Press in 2025. He received a grant from the Long-Term Future Fund for work on longtermist lessons from COVID, contributing to what he and Jan Kulveit called experimental longtermism. He blogs extensively at gleech.org and posts on EA Forum and LessWrong under the handle technicalities.