Liam Fedus
Listed under "Who we are" on the Periodic Labs homepage · Periodic Labs
At a glance. Liam Fedus is listed as Listed under "Who we are" on the Periodic Labs homepage at Periodic Labs. The profile sits among the builders and open-source contributors. Fields listed: Language models and AI for science. The source lists 1 official page and open-role pages for OpenAI.
Summary
On the Periodic Labs team; first author of Switch Transformers; in OpenAI o1 reasoning research leadership.
Known for: Switch Transformers; OpenAI o1 and GPT-4.
Works at
- Periodic Labs 2 people in the wiki
Other documented roles
Not confirmed as current in the source profile.
- Reasoning research leadership on OpenAI o1 (2024); data flywheel lead on GPT-4 (2023), OpenAI
- Author affiliated with Google on the Switch Transformers paper (2021), Google
Open roles
Related people
- Byron HsuAlso at Periodic Labs
- Ali MadaniAI for science · Language models
- Hoifung PoonAI for science · Language models
- Jakob UszkoreitLanguage models · AI for science
- Jeffrey A. RuffoloAI for science · Language models
- Brian HieAI for science · Language models
- Garyk BrixiAI for science · Language models
- Alex RivesAI for science · Language models
- Sergey EdunovLanguage models · AI for science
- Yejin ChoiLanguage models · AI for science
Source and corrections
Read the full profile on USASI ↗
Facts on this page come from that USASI profile (reviewed Oct 21, 2026); data last checked Oct 23, 2026. See something wrong? Suggest a correction.