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Chai Discovery raises $400M Series C at $3.8B · Lounge.ai

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AI Deals › Venture

VentureJul 15 · Today's Startup News

Chai Discovery raises $400M Series C at $3.8B

Molecular-design lab Chai Discovery raised $400M in July 2026 at a $3.8B valuation from Index Ventures, Sequoia Capital, Dimension and Kleiner Perkins, with OpenAI, Menlo Ventures and General Catalyst also reported as investors.

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Source

Today's Startup News ↗

Rewritten in our words. The original is the source of record.

Deal sheet

CompanyChai Discovery

TypeSeries C

Amount$400M

Valuation$3.8B

SectorAI drug discovery

HQSan Francisco, US

Investors

Index Ventureslead Sequoia Capital Kleiner Perkins OpenAI Menlo Ventures General Catalyst

Chai Discovery website ↗

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Source

Today's Startup News ↗

Rewritten in our words. The original is the source of record.

Deal sheet

CompanyChai Discovery

TypeSeries C

Amount$400M

Valuation$3.8B

SectorAI drug discovery

HQSan Francisco, US

Investors

Index Ventureslead Sequoia Capital Kleiner Perkins OpenAI Menlo Ventures General Catalyst

Chai Discovery website ↗

More in Venture

OneByZero raises $20M Series A from Jungle Ventures to take enterprise AI from pilots to production in APAC Pandektes raises €13.5M Series A led by Alstin Capital to build the data layer for AI legal research Supabase raises $150M led by GIC and acquires Turso Flow Engineering raises $50M Series B at $750M for agentic hardware-design tooling

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