Jeff Bezos's AI startup Prometheus raised $12 billion（約1.9兆円） at a $41 billion（約6.6兆円） valuation, betting that artificial intelligence will create a labor shortage by making engineering teams vastly more productive.

What happened: Prometheus, Bezos's industrial AI startup, closed a $12 billion（約1.9兆円） Series B funding round led by JPMorgan Chase, Goldman Sachs, and BlackRock, roughly six months after emerging from stealth with $6.2 billion（約9900億円） in initial funding. The company, which operates with about 150 employees across San Francisco, London, and Zurich, aims to build an "artificial general engineer" capable of designing and manufacturing complex physical products like jet engines.

Why it matters: Bezos is pushing back against the prevailing AI narrative by arguing that AI will create a labor shortage rather than mass job loss, citing Amazon's history as evidence that productivity-boosting technology expands overall opportunity. The funding scale forced Bezos to bypass traditional venture capital and raise directly from the largest Wall Street balance sheets—a path very few founders can credibly walk. Wall Street is effectively underwriting a private company at public-market size, which means public-market consequences if the hardware breakthroughs being priced in do not materialize.

What to watch: Prometheus is private and cannot be tracked directly by retail investors. If Bezos is correct that AI compresses the design-to-manufacture cycle for jet engines and other capital goods, the industrials sector could become the next AI beneficiary after semiconductors and hyperscalers. If he is wrong, $12 billion（約1.9兆円） of bank-syndicated capital will have been parked in a 150-person startup at a $41 billion（約6.6兆円） valuation.