Chai Discovery
Building frontier AI to engineer better molecules
San Francisco, United States · Founded 2024 · $630.0M raised
- Headquarters
- San Francisco, California
- Employees
- 11–50
- Founded
- 2024
- Business Model
- B2B
- Website
- chaidiscovery.com
- Total Funding
- $630.0M
- Last Round
- $400.0M Series CJul 2026
- Rounds
- 4
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
About
Chai Discovery is an AI drug discovery company that develops foundation models for molecular biology, enabling the prediction and design of biochemical interactions with atomic precision. The company's flagship model, Chai-1 and Chai-2, are multi-modal foundation models for predicting molecular structures and de novo antibody design. Chai-2 achieves an 85% success rate in zero-shot antibody discovery. Founded in 2024 by former OpenAI researchers, Chai has partnered with Eli Lilly for AI-driven biologics discovery and raised $130M in a Series B led by General Catalyst. The company operates as a partner-facing R&D and software organization supporting biologics discovery for biopharma customers.
Summary
Chai Discovery is an Artificial Intelligence company based in San Francisco, United States, founded in 2024. It has raised $630.0M in total across 4 rounds, most recently a $400.0M Series C round in Jul 2026. Investors include Index Ventures, Menlo Ventures and Kleiner Perkins.
Tech & App Stack
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Funding History
Jul 2026
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Funding: Seed through Series C. Amounts, valuations, and investors where available.
Investors
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