California-Based Atomic Machines Secures $250M in Funding

Atomic Machines, an Emeryville, CA-based provider of an AI-native, all-digital manufacturing system that builds micro-machines directly from code, has secured $250 million in a funding round.

The round saw backers including OneIM, Gigafund, XTX Ventures, KAS Venture Partners, Valor Equity Partners, Tru Arrow Partners, Construct Capital, Sozo Ventures, and the Regents of the University of California.

The company plans to use the funding to scale its manufacturing platform and expand operations for its first product family, PrimeSwitch.

What is Atomic Machines?

Atomic Machines develops an AI-powered manufacturing system called the Matter Compiler, which builds working micro-machines directly from code. The system is designed to produce small, complex devices such as motors, gears, medical robots, and cooling components for AI chips.

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Unlike traditional manufacturing methods, the Matter Compiler can build complete machines with moving parts and multiple materials without requiring custom hard tooling for each new design.

The system uses high-precision measurement technology to monitor manufacturing operations and make real-time corrections. Its AI also runs experiments on the physical equipment to test designs and improve manufacturing results.

How Much Funding Has Atomic Machines Raised?

Atomic Machines has raised $250 million in its latest funding round.

The announcement does not provide details about previous funding rounds or the company's total funding raised before this round.

Who Invested in Atomic Machines’ Funding Round?

The $250 million funding round included participation from:

• OneIM
• Gigafund
• XTX Ventures
• KAS Venture Partners
• Valor Equity Partners
• Tru Arrow Partners
• Construct Capital
• Sozo Ventures
• The Regents of the University of California

Why the Funding Matters

Atomic Machines plans to use the funding to scale its Matter Compiler manufacturing platform and expand operations for PrimeSwitch, its first product family.

The investment will support the company's efforts to develop its AI-native manufacturing system and increase production capacity for its micro-machine products.

Who founded Atomic Machines?

Atomic Machines was founded in 2019 by Jeff Holden. The company is headquartered in Emeryville, California.

It is developing manufacturing technology that combines physical production systems with AI-driven measurement and real-time process correction.

"3D printing made shapes programmable: any geometry, straight from a file. We're making machines programmable: many materials, moving parts, sealed and wired, straight from a file," said Jeff Holden, founder and CEO of Atomic Machines.

Market and Business Growth

After six years in stealth, Atomic Machines introduced its Matter Compiler and announced PrimeSwitch as the first product made using the system.

PrimeSwitch is an electromechanical power relay designed to open in 50 microseconds, which the company says is about 1,000 times faster than a conventional contactor, without sacrificing conduction efficiency.

The Matter Compiler can produce three-dimensional machines with moving parts, multiple materials and assembled components. It supports features measured in single-digit microns and does not require hard tooling for new designs.

What Happens Next?

Atomic Machines plans to scale its manufacturing platform and expand operations for PrimeSwitch.

The company will continue developing the Matter Compiler to manufacture complex micro-machines directly from code, with potential applications across electronics, medical devices, and other areas requiring small, precise mechanical components.

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