Leahy co-founded EleutherAI during the COVID-19 pandemic in 2020, along with Leo Gao and Sid Black.[3] Originally a Discord server for discussing GPT-3, EleutherAI evolved into a leading non-profit research institute focusing on interpretability and alignment of large models. The organization has developed or helped develop many powerful publicly available models, such as GPT-J, GPT-NeoX, BLOOM, VQGAN-CLIP, Stable Diffusion, and OpenFold. With over 25 million downloads, EleutherAI has enabled cutting-edge research on interpretability, ethics, training dynamics, and more. Leahy co-founded Conjecture in 2022 with Sid Black and Gabriel Alfour, a startup that aims to scale AI alignment research.[2] Conjecture is located in London and is supported by notable investors, including Nat Friedman, Daniel Gross, Patrick and John Collison, Arthur Breitman, Andrej Karpathy, and Sam Bankman-Fried. The founders and early staff are mainly EleutherAI alumni and independent researchers, such as Adam Shimi.