Jeff Bezos' stealth physical AI startup Project Prometheus has closed a $10 billion round at a $38 billion valuation, sending another shockwave through a robotics market already conditioned to mega-rounds. The deal closed only four months after the company quietly began assembling staff and has been disclosed without a public prototype or product demonstration.
What We Know
Project Prometheus is led by Bezos and a roster of senior researchers recruited from OpenAI, Google DeepMind, and Meta's superintelligence team. The company is building physical AI models intended to control fleets of general-purpose robots across logistics, manufacturing, and consumer settings, multiple outlets have reported.
How It Stacks Up
The $38 billion valuation puts Prometheus ahead of nearly every pre-revenue AI startup ever launched. By comparison, Figure AI sits at $39 billion after raising $1 billion last year, and Physical Intelligence just closed $1 billion at an $11 billion valuation. Skild AI raised $1.4 billion in January at a $14 billion mark.
The Bezos Playbook
Bezos has personally backed a string of high-conviction frontier bets, from Anthropic to Aurora to Blue Origin. He is reported to be playing an active operating role at Prometheus, working alongside research leads on long-horizon agendas that combine large foundation models with robotic embodiment. The company is hiring aggressively in Seattle and the Bay Area.
What's Different About "Physical AI"
Where large language models reason over text, physical AI models must reason over actions in the real world: forces, contacts, and partial observations. The category has been the dominant theme of 2026 robotics fundraising, with most top deals — including the Genesis AI GENE-26.5 model and Physical Intelligence's pi-models — focused on transfer learning across robot bodies.
What To Watch
Skeptics note that valuations are running well ahead of revenue and that the talent war for senior robotics researchers is unsustainable. Believers argue that even a 10% chance of a true general-purpose robot brain justifies the price. Either way, Bezos has now planted a flag in the category and the next disclosures — a research paper, a recruit, or a first robot — will move the market.
Related: Saronic Series D, Physical Intelligence $1B at $11B.
Reporting based on coverage from The Elec, Crunchbase News, and AI Funding Tracker.