Joshua Meier
Researcher · Founder
Now Co-founder and CEO, Chai Discovery
Latest on AI4S.fyiFunding · Jul 14 · founderChai Discovery · Series C · $400MAccount links back to chaidiscovery.com · Avatar from their X account, taken 2026-09-28
Affiliations
Current
- Co-founder and CEO · Chai Discovery
Also named in the companies' announcements: OpenAI, Meta / FAIR
Current roles come from these dated records, not from the bio below. Each links the page it was read from.
About
Joshua Meier is a co-founder of Chai Discovery, which builds AI models that predict and design molecular interactions. According to its investor Index Ventures, he double-majored in computer science and chemistry at Harvard, joined OpenAI in 2018, and then worked on AI for biology at Meta's FAIR lab and at Absci before starting Chai.
Read on 2026-09-29; for current roles see Affiliations above. Read at: indexventures.com ↗
Selected work
- Biological structure and function emerge from scaling unsupervised learning to 250 million protein sequences ↗
A protein language model trained on 250 million sequences, whose representations carry structural and functional information.
Also on this record: Alexander Rives, Tom Sercu
Each byline was read on the paper itself. Only people on this record are named, not the full author list, and a shared byline does not say who did which part.
Founded
Chai DiscoveryProtein design · 2024 · 4 rounds on record · disclosed $600M · Series C $400MBackground: Absci; Facebook AI; OpenAI (as the company's own announcements put it)
Co-founders: Jack Dent, Matthew McPartlon, Jacques Boitreaud
Backed byIndex VenturesOak HC/FTGeneral CatalystMenlo Ventures (incl. Anthology Fund with Anthropic)Thrive Capital
On the timeline
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