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Atomic Machines Exits Stealth with $250M, Says Its AI Builds Tiny Machines from Code

Oct 12, 2026
The Rundown AI
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Summary

Atomic Machines emerges from six years of stealth with $250M raised, led by former Uber self-driving chief Jeff Holden. The California startup says its Matter Compiler builds tiny machines, such as the fingertip-sized PrimeSwitch power switch, directly from code without retooling. It builds only its own products, with humans in the loop.

Key Points

  • Jeff Holden argues the Matter Compiler builds a new device when code changes, unlike a 3D printer.
  • Atomic Machines says it checks every production step before a part moves on to gather data on usable materials.
  • Jeff Holden describes the goal as prompt-to-product manufacturing for physical hardware.

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