CuspAI, a Cambridge based AI startup, just raised $450 million in Series B funding at a $2.6 billion valuation. The round was co led by Kleiner Perkins and New Enterprise Associates, with backing from Jeff Bezos’s investment firm Bezos Expeditions.
The valuation marks a five times jump in under a year, up from $520 million last September. The company has now raised over $650 million in total since it started in 2024.
Who’s Writing the Cheques
The investor list is long. Glade Brook Capital Partners, Lux Capital, AMD Ventures, Tru Arrow Partners, StepStone, the UK’s Sovereign AI Venture Fund, Invest-NL and John Doerr joined as new backers.
Existing investors Temasek, Basis Set Ventures, Giant Ventures, Touring Capital, Prosus, Phoenix Court and Northzone also put in more money. That’s nine plus firms in one round, which usually signals either strong conviction or a scramble to get a seat at the table before the door closes.
What CuspAI Actually Does
CuspAI was founded by Dr. Chad Edwards and Professor Max Welling, and its mission is to speed up the discovery of materials that don’t exist yet. Its MIRA platform runs generative and agentic AI models to simulate and screen billions of molecular combinations before anyone touches a lab bench.
That’s the real pitch here. Materials science has always been slow because testing happens physically, one compound at a time. CuspAI is betting it can compress years of trial and error into computation.
The Foundry Launch Matters More Than the Number
CuspAI unveiled its AI Materials Foundry alongside the raise, a coalition of more than 48 companies and research institutions pooling compute and scientific resources. Founding members include Nvidia, Meta’s Fundamental AI Research team, Samsung, Hyundai Motor Group, Applied Materials, Tokyo Electron and Lam Research. The core problem CuspAI is chasing is chipmakers’ dependence on rare metals like iridium and ruthenium, which are scarce and hard to source.
Semiconductor equipment makers don’t join startup coalitions for PR. Applied Materials, Tokyo Electron and Lam Research are the companies that actually build the machines chipmakers depend on. Their presence suggests the materials shortage is a real production bottleneck, not a future risk.
Crowded Field, Real Customers
Rivals include Orbital Materials, a DeepMind spinout, and XtalPi, valued at $2.5 billion. Flagship Pioneering’s Lila Sciences has raised over $550 million, and Periodic Labs, founded by former OpenAI and Google DeepMind staff, sits at a $1 billion valuation. The field is crowded and well funded, which tells you investors see materials discovery as the next AI application layer after language and code.
ASML, Meta, Samsung and Hyundai are already using CuspAI’s platform, which is a stronger signal than the funding number itself. Paying customers before a Series B close is rare in AI right now. Most companies at this stage are still selling potential. CuspAI is selling adoption.
