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Connor Leahy

Co-founder of EleutherAI and Conjecture; co-author of The Pile and the GPT-NeoX-20B paper

Connor Leahy co-founded EleutherAI in 2020 with Sid Black and, in March 2022, co-founded Conjecture, a company working on AI safety and controllable AI systems, according to Conjecture's own history page. Leahy is a co-author of The Pile, EleutherAI's 825 GiB English text corpus for training language models, and of the GPT-NeoX-20B paper, where Leahy is credited on the section about alignment implications. Leahy is also listed among the authors in the citation entry for the GPT-NeoX training library.1234

Work

Other documented roles

Roles the sources document but that are not confirmed as current.

  • Co-founder (2020), EleutherAI1
  • Co-founder (founded March 2022), Conjecture1

This profile covers public professional work only, from the sources below. It is not an endorsement or a ranking. To correct or remove it, use the correction form.

Sources · reviewed Oct 13, 2026

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