CuspAI, a Cambridge-based artificial intelligence company focused on designing new materials for clean energy and semiconductor applications, has closed a $450 million Series B funding round, bringing its total capital raised to over $670 million.
The round was co-led by Kleiner Perkins and NEA, with significant participation from Bezos Expeditions, Glade Brook Capital Partners, Lux Capital, AMDVentures, Tru Arrow Partners, StepStone, and the UK Sovereign AI Fund. Existing investors including Temasek, Basis Set Ventures, Giant Ventures, Phoenix Court, and Northzone also participated in the financing.
The funding round values CuspAI at $2.6 billion, marking a substantial milestone for the materials science-focused AI firm. The company plans to deploy the capital to expand its operations across North America, Asia-Pacific, and Europe, while simultaneously building what it calls the AI Materials Foundry—a global infrastructure combining data resources, laboratory facilities, computational capacity, and scientific expertise dedicated to advancing new material design.
Materials Discovery as Strategic Priority
Materials discovery has historically represented a significant constraint on technological progress in energy, semiconductors, and climate-related applications. CuspAI’s approach leverages artificial intelligence to address this challenge across multiple sectors, from removing persistent organic pollutants like forever chemicals from drinking water to developing advanced materials for next-generation semiconductor manufacturing.
John Doerr, Chairman of Kleiner Perkins, described the importance of CuspAI’s work: “Materials discovery has quietly been a bottleneck behind progress in energy, semiconductors, and climate. What’s remarkable about Cusp is that a single platform is already solving hard problems across industries—from stripping forever chemicals from drinking water to designing next‑generation chip materials.”
European Context for AI Materials Innovation
The investment underscores growing international recognition of artificial intelligence’s potential to accelerate materials science innovation. CuspAI’s Cambridge headquarters positions it within Europe’s thriving AI research ecosystem, which has seen increased institutional funding directed toward practical applications in energy transition and semiconductor manufacturing.
The participation of the UK Sovereign AI Fund in this round reflects government-level commitment to supporting domestic AI capabilities in strategic sectors. European venture capital and strategic investors, including StepStone and existing backers, continue to demonstrate confidence in the commercial viability of AI-driven scientific discovery.
The funding also highlights how European startups are attracting capital from leading American venture firms, with Kleiner Perkins and NEA’s co-leadership demonstrating transatlantic confidence in innovation originating from the United Kingdom. As European policymakers emphasize technological sovereignty and climate objectives, companies like CuspAI represent the intersection of these priorities—leveraging cutting-edge AI to address material bottlenecks essential to both the clean energy transition and advanced semiconductor production.