Liam FedusLiam Fedus
Periodic Labs
Co-founder & CEO of Periodic Labs · ChatGPT co-creatorCo-founder & CEO of Periodic Labs · ChatGPT co-creator
deep-learningnlp
American AI researcher who was a VP of Research at OpenAI and a co-creator of ChatGPT. Earlier he co-authored the Switch Transformer, scaling mixture-of-experts models to trillion-parameter scale. In 2025 he left OpenAI to co-found Periodic Labs with ex-DeepMind researcher Ekin Dogus Cubuk, building an 'AI scientist' to automate discovery in materials and physics, backed by a $300M seed round.
American AI researcher who was a VP of Research at OpenAI and a co-creator of ChatGPT. Earlier he co-authored the Switch Transformer, scaling mixture-of-experts models to trillion-parameter scale. In 2025 he left OpenAI to co-found Periodic Labs with ex-DeepMind researcher Ekin Dogus Cubuk, building an 'AI scientist' to automate discovery in materials and physics, backed by a $300M seed round.
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