Lumaril, a startup that connects AI software to the control systems factories already have, has raised a $66 million Series A at a $400 million valuation. Returning investor Elad Gil led the round. Its co-founders wrote that capturing the know-how of veteran plant operators is the fastest path to reindustrialization at scale.

Co-founder Ben Duffield appeared in a photograph with the Wall Street Journal's report, alongside Kim Lear, an operator at Lumaril. The two were watching an Arthur Cos. employee at work on a computer terminal. According to the launch post, Lumaril learned everything it knows from operators at companies like Ultra-Poly and The Arthur Companies.

The Journal's piece described running a production line as a kind of art, with the most seasoned operators drawing on years of experience instead of a handbook. Lumaril, it said, wants to turn that art into a science for the country's entire manufacturing base.

What Changed

AI-generated summary, reviewed by an editor. More on our AI guidelines.

The know-how problem

The founders write that the true bottleneck in American industry isn't physical infrastructure. It is tacit knowledge that lives with the people on the floor. Senior operators know by intuition how to adjust hundreds of settings that all affect one another, a skill built over decades of tweaks, workarounds and near-misses.

"Almost none of this process knowledge is written down," they wrote, "and these operators are retiring faster than they're being replaced."

The post pushes back on the idea that the country has to rebuild its industry from scratch. The United States is one of the largest manufacturing economies in the world, home to hundreds of thousands of factories in operation today. In the founders' account, those factories just aren't running at their full potential. "The value in America's industrial economy is latent, not absent," the post says.

How the software works

Lumaril plugs into the control systems a plant already has and builds a continuous model of the entire operation. The model learns from how the plant's best operators run it. When materials, weather or equipment change, the model changes with them, and it makes real-time adjustments meant to keep throughput and yield at capacity. The company pitches the result as higher throughput, better yield and more reliable operations.

Capturing operators' knowledge, in the post's telling, can push today's plants to their true capacity and bring mothballed legacy assets back to life. The founders also want it to give the next generation of plants a long memory of what came before.

The business model fits in two sentences of the launch post. "We don't sell software. We sell production, and we're paid on the throughput and yield we add."

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For anyone running a plant who wants to see what it can do, Lumaril offers to ship Monocle, which it calls its AI-enabled PLC historian, free of charge.

The backers

Felicis, Koch Disruptive Technologies and Pax Ventures joined the Series A. So did Lux Capital and General Catalyst, which co-led Lumaril's seed round. The post also thanked Forward Deployed VC, BoxGroup and Bob McGrew. Of Ultra-Poly and The Arthur Companies, which trusted Lumaril with their plants, the founders wrote: "This round belongs to them as much as to us."

Every claim here about what the software does to a plant's throughput and yield is Lumaril's own, from that launch post.

The founders want the operators' knowledge to outlast their careers. "What they've learned over lifetimes shouldn't disappear when they retire," they wrote. "It should stay with the plants, be passed to the workers who come next, and become the foundation for everything we build from here."

Frequently Asked Questions

What does Lumaril's software do?

It plugs into the control systems a plant already has and builds a continuous model of the entire operation, learning from how the plant's best operators run it. As materials, weather or equipment change, the model changes with them and makes real-time adjustments meant to keep throughput and yield at capacity.

How much did Lumaril raise, and from whom?

A $66 million Series A at a $400 million valuation, led by returning investor Elad Gil. Felicis, Koch Disruptive Technologies, Pax Ventures, Lux Capital and General Catalyst also took part.

How does Lumaril get paid?

The founders say the company does not sell software. It sells production and is paid on the throughput and yield it adds.

Why do the founders focus on veteran operators?

They write that senior operators adjust hundreds of interacting settings by intuition, that almost none of this process knowledge is written down, and that these operators are retiring faster than they are being replaced.

Who has Lumaril worked with?

The founders say they learned on the floor from operators at companies including Ultra-Poly and The Arthur Companies, which trusted Lumaril with their plants.

AI-generated summary, reviewed by an editor. More on our AI guidelines.

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