Jeff Bezos' AI startup Prometheus has raised $12 billion（約1.9兆円）, valuing the company at $41 billion（約6.6兆円） as it builds AI models for physical tasks like engineering and manufacturing.

What happened: Prometheus closed a $12 billion（約1.9兆円） funding round, bringing its valuation to $41 billion（約6.6兆円）. The startup, launched in November 2025 with $6.2 billion（約9900億円） in seed funding and led by Bezos alongside Stanford professor Vik Bajaj, is now deploying capital toward compute-intensive work including data generation.

Why it matters: Prometheus is building AI models designed to help engineers design and build products faster in tech, automotive, and aerospace industries. Bezos suggests hyperscalers (large cloud providers) like Amazon could use the tools Prometheus develops, signaling potential commercial reach across the industry.

What to watch: The startup has not yet shown any products publicly. Bezos describes revealing details as premature, so the actual capabilities and timeline remain undisclosed — making execution the key test of whether the $12 billion（約1.9兆円） investment delivers the claimed impact on engineering and manufacturing workflows.