Jeff Bezos' Prometheus raises $12 billion to build an artificial general engineer for physical AI

Reviewed byNidhi Govil

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Jeff Bezos' new AI startup Prometheus has raised $12 billion at a $41 billion valuation to develop what he calls an artificial general engineer. The venture aims to build AI-powered engineering tools that accelerate the design and manufacturing of physical products across industries including robotics, aerospace, and drug discovery. With backing from JPMorgan, Goldman Sachs, and BlackRock, this marks Bezos' first operational CEO role since leaving Amazon in 2021.

Jeff Bezos Returns as Co-CEO to Build Physical AI

Jeff Bezos has stepped back into an operational leadership role for the first time since leaving Amazon in 2021, this time as co-CEO of Prometheus, an artificial intelligence startup focused on what the industry calls physical AI. The venture, which launched in November 2025 with $6.2 billion in initial funding, has now closed a massive $12 billion Series B round at a $41 billion valuation

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. Investors include JPMorgan, Goldman Sachs, BlackRock, DST Global, and Arch Venture Partners, with Bezos himself contributing a sizable portion from his own coffers

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. Total funding now exceeds $18 billion, making Prometheus one of the most heavily capitalized AI ventures in the sector.

Source: GeekWire

Source: GeekWire

Bezos shares the co-CEO role with Vik Bajaj, a Stanford medical school professor who previously co-founded Alphabet's Verily health research lab

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. Speaking to CNBC at the company's San Francisco headquarters, Bezos explained that he started as a founding investor in late 2024 but "became so impressed by what was happening and the potential that I decided I couldn't sit on the sidelines and I needed to jump in with both feet"

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. The startup currently employs 150 people across offices in San Francisco, London, and Zurich, and has been actively recruiting talent from OpenAI, Google DeepMind, and Nvidia

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Building an Artificial General Engineer

Prometheus aims to develop what Bezos describes as an artificial general engineer, AI-powered engineering tools designed to dramatically accelerate the invention loop from initial design to manufacturing for physical products

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. The company's focus spans multiple industries including computing, aerospace, automotive, advanced manufacturing, robotics, and drug design

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. Bajaj offered a concrete example, citing jet engine development, which typically takes teams of engineers a decade or more to design, prototype, and manufacture. "What has changed in the last few years is the ability to formulate even something as complicated as that, from design to manufacturing, as an end-to-end AI problem," Bajaj told CNBC

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Source: Axios

Source: Axios

Bajaj described the design of new technologies as requiring "a thousand human minds creatively working together" and noted that the engineers behind those breakthroughs "use tools that really haven't changed for decades." Part of Prometheus' mission is to arm them with AI models for physical tasks that allow them to generate designs much more quickly

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. The approach relies on deep learning principles similar to those behind large language models, but applied to the physical world through training on real-world experimental data, robotics interactions, and engineering workflows rather than just text and images

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Compute-Intensive Mission Requires Massive Capital

The $12 billion funding round reflects the capital-intensive nature of Prometheus' mission. "One of the reasons we've had to raise a significant amount of funding is because what we're doing is very compute-intensive and we need to create that data," Bezos told CNBC

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. Much of the funding will be directed toward purchasing compute resources and building specialized training data required for the company's AI models. When asked about a potential IPO, Bezos said it's "too early to think about that"

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Bezos framed the company's objective in ambitious terms during his interview with The New York Times. "All societal wealth is driven by invention," he explained. "Six thousand years ago, somebody invented the plow, and we all got wealthier. Then, much later, somebody invented the steam engine, and we all got wealthier." He said Prometheus seeks to produce technological breakthroughs that will generate "civilizational wealth," not just wealth for a single individual or company

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Blue Origin and a Broader Industrial Strategy

Bezos has been transparent about how his other ventures could benefit from what Prometheus develops. "Blue Origin is a perfect example of a company that could benefit from the tools that Prometheus is building," he told The New York Times. "Any company that is building sophisticated devices -- like rocket engines -- would benefit greatly from this kind of technology"

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. Reports indicate that Bezos is working to raise a $100 billion investment fund to acquire companies that could leverage and benefit directly from what Prometheus produces

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. Addressing these reports, Bezos confirmed that Prometheus may buy parts of companies that could benefit from its technology and help them improve their manufacturing processes

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Source: Ars Technica

Source: Ars Technica

The co-CEOs declined to provide a specific product timeline, saying only that early rollouts are coming

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. Prometheus is not operating in isolation. Numerous other startups are exploring applications of artificial intelligence in the physical world, from training world models to drive policies for robotics to overhauling manufacturing with more robust automation. However, with over $18 billion in total funding, Prometheus has secured a significant advantage over most competitors in what Bezos is betting will be AI's most valuable application: accelerating the engineering of physical objects rather than focusing solely on chatbots or code generation

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