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b12 Labs
b12 Labs is a San Francisco startup (Y Combinator S25) building AI agents for pharmaceutical and biotech chemistry. Its platform designs synthesis routes, plans and optimizes reactions, and turns those plans into robot-ready code for automated labs, aiming to compress early-stage drug discovery from years to months. The company was founded in 2025 by chemists Zlatko Joncev and Andres Bran, who met at EPFL's Lab of Artificial Chemical Intelligence.