--- title: Chai Discovery raises $400M as AI drug discovery booms description: Chai Discovery has raised a $400M Series C, tripling its valuation to $3.8bn in just seven months. The San Francisco startup uses generative AI to design... canonical: https://daily.dev/posts/chai-discovery-raises-400m-as-ai-drug-discovery-booms-grocmi3f1 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Chai Discovery raises $400M as AI drug discovery booms | daily.dev og:description: Chai Discovery has raised a $400M Series C, tripling its valuation to $3.8bn in just seven months. The San Francisco startup uses generative AI to design... og:url: https://daily.dev/posts/chai-discovery-raises-400m-as-ai-drug-discovery-booms-grocmi3f1 og:image: https://api.daily.dev/og/posts/gRocmI3f1.png og:image:alt: Chai Discovery raises $400M as AI drug discovery booms og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Chai Discovery raises $400M as AI drug discovery booms **[The Next Web](https://daily.dev/sources/tnw)** · 3 min read · 0 upvotes · 0 comments ## Summary Chai Discovery has raised a $400M Series C, tripling its valuation to $3.8bn in just seven months. The San Francisco startup uses generative AI to design antibodies and proteins from scratch rather than screening existing molecule libraries. Its Chai-2 model was the first zero-shot system for de novo antibody design to achieve double-digit lab success rates, and its models are already deployed at Eli Lilly, Pfizer, and Novartis. The round was led by Index Ventures with participation from Kleiner Perkins, Sequoia, and returning investor OpenAI. The AI drug discovery space is rapidly attracting capital, with Isomorphic Labs raising $2.1bn and Xaira Therapeutics launching with $1bn, though the real test remains whether AI-designed drug candidates can survive clinical trials. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [OpenAI-backed biotech firm Chai Discovery raises $130M Series B at $1.3B valuation](https://daily.dev/posts/openai-backed-biotech-firm-chai-discovery-raises-130m-series-b-at-1-3b-valuation-0pwxrnaej) · TechCrunch · 0 upvotes · 0 comments - [From OpenAI’s offices to a deal with Eli Lilly — how Chai Discovery became one of the flashiest names in AI drug development](https://daily.dev/posts/from-openai-s-offices-to-a-deal-with-eli-lilly-how-chai-discovery-became-one-of-the-flashiest-name-zk6e3stiu) · TechCrunch · 0 upvotes · 0 comments - [Matthew McPartlon & Neil Patil, Chai Discovery](https://daily.dev/posts/matthew-mcpartlon-neil-patil-chai-discovery-6ftlonfz0) · Latent Space · 0 upvotes · 0 comments --- Tags: [#startup](https://daily.dev/tags/startup), [#genai](https://daily.dev/tags/genai), [#biotech](https://daily.dev/tags/biotech) [View this post on daily.dev](https://daily.dev/posts/chai-discovery-raises-400m-as-ai-drug-discovery-booms-grocmi3f1) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Chai Discovery raises $400M as AI drug discovery booms","url":"https://daily.dev/posts/chai-discovery-raises-400m-as-ai-drug-discovery-booms-grocmi3f1","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/chai-discovery-raises-400m-as-ai-drug-discovery-booms-grocmi3f1"},"datePublished":"2026-07-15T16:16:37.431Z","dateModified":"2026-07-15T16:47:34.733Z","description":"Chai Discovery has raised a $400M Series C, tripling its valuation to $3.8bn in just seven months. 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