Jeff Bezos’s industrial AI startup Prometheus announced on June 11 that it raised $12 billion in Series B funding at a roughly $41 billion valuation, ending months of stealth. Bezos co-leads the company as co-CEO with Vik Bajaj, a former Google X scientist who co-founded Alphabet’s Verily and the drug-discovery firm Xaira Therapeutics. The round marks Bezos’s first operating role since he stepped down as Amazon CEO in 2021. It lifts the company’s total funding above $18 billion, after a $6.2 billion launch round in November 2025.
Prometheus, which recently dropped its Project codename, is building what its backers call physical AI. Rather than another text model, it aims to model, simulate and optimize real-world engineering and manufacturing across fields like aerospace, automotive, advanced computing and drug design.
The founders describe the goal as an “artificial general engineer.” Bezos says the company is not focused on robotics or factory automation, though its tools could help design both. The pitch is speed: he argues that a redesign which might take a jet engine maker a decade could be compressed many times over by giving engineers better simulation tools.
Investors in the round include JPMorgan, BlackRock, Goldman Sachs, DST Global and Arch Venture Partners, alongside Bezos, who was the largest backer of the Series A. The valuation rose from a reported $38 billion when the round was first described in April.
Prometheus now has about 150 employees, up from roughly 100 at launch, with offices in San Francisco, London and Zurich, and has recruited from OpenAI, Google DeepMind, Nvidia and Meta. It has no corporate ties to Amazon or Blue Origin, though Bezos has called Blue Origin a potential customer. Much remains undisclosed, including how the models are trained, product timing, and a reported effort to raise up to $100 billion for a separate holding company that would buy legacy industrial firms and feed their data into Prometheus.
The Implications
- If it works, the approach could shorten design cycles for complex hardware, from engines to medical devices, a market far larger than chatbots.
- The founders frame the tool as a copilot that expands engineering work rather than replacing it, though the same technology could also reduce headcount.
- The scale of institutional money, led by banks rather than venture firms, suggests investors view physical AI as infrastructure rather than a typical startup bet.
The Broader Field
Prometheus enters a crowded and well-funded race. Industrial incumbents such as Siemens and Rockwell Automation are investing in smart-factory and digital-twin tools, while Nvidia and Google push AI to the industrial edge.
Startups including Periodic Labs, which raised $300 million for robot-run research, and humanoid maker Figure AI are chasing nearby goals. Elon Musk, whose xAI also targets physical-world problems, has called Bezos a copycat. The funding lands during strong public-market appetite for AI infrastructure. Chipmaker Cerebras, whose Venture 50 Index slot Prometheus filled, raised more than $5.5 billion in a May IPO and saw its shares roughly double on day one.
