Jeff Bezos is backing a two-year-old Cambridge AI lab at a $2.6bn valuation

Jeff Bezos appears to have settled on his AI thesis, and it is not chatbots. It is the physical world.

CuspAI, a two-year-old Cambridge startup that uses AI to design new materials, is in talks to raise about $400mn at a $2.6bn valuation, the Financial Times reports. The round is led by Bezos Expeditions, the Amazon founder’s family office, alongside Kleiner Perkins. Term sheets have been signed, but the deal has not closed, and CuspAI declined to comment.

If it lands, it would more than quadruple the company’s $520mn valuation from September, a 5x jump in nine months.

A ‘search engine for the material world’

CuspAI was founded in 2024 by Chad Edwards, a chemist who helped build quantum-computing firm Quantinuum, and Max Welling, a machine-learning pioneer who was a distinguished scientist at Microsoft Research. Its advisory board includes two of AI’s most decorated names, Geoffrey Hinton and Yann LeCun.

The pitch is a “search engine for the material world”: describe the properties you need, such as strength, conductivity or heat tolerance, and the system proposes chemical compositions up to 10 times faster than conventional methods.

The differentiator is that its models are “synthesis-aware”, meaning the materials they suggest can actually be manufactured rather than just simulated. Meta is already using it for carbon capture, Hyundai for clean energy and Kemira to strip PFAS “forever chemicals” from water.

The Bezos pattern

The timing is the tell. Just six days earlier, Bezos unveiled Prometheus, a roughly $41bn physical-AI lab built to do for engineering what large language models did for text, his first chief-executive role since leaving Amazon.

CuspAI fits that worldview precisely, sitting where generative AI meets the physical world. Bezos Expeditions has spread smaller bets across Anthropic, Perplexity and Figure AI, but materials science is the part of AI he now seems most convinced about.

A crowded, unproven frontier

He is not alone. XtalPi is valued at about $2.5bn, Periodic Labs (founded by ex-OpenAI and DeepMind staff) raised a $200mn seed at a $1bn valuation, and European rivals Altrove and Dunia Innovations are chasing the same prize.

The caveats are real. The round is not closed, the valuation is a steep mark-up for a roughly 65-person lab, and AI-designed materials are still an early commercial bet rather than a proven business. But two nine-figure Bezos moves into physical AI inside a week is a loud signal about where one of tech’s sharpest operators thinks the next decade of value sits, and it is landing in the UK.