Etched, a three-year-old startup building specialized chips for running AI models rather than training them, has raised $700 million at a $21 billion valuation — more than double the $10.3 billion valuation it commanded just a month earlier.
The Series D round, announced August 18, was led by Jane Street, the quantitative trading firm that tested Etched's hardware before agreeing to buy and deploy it. Existing backers including Sequoia Capital, Andreessen Horowitz, Kleiner Perkins, Tiger Global and Bain Capital Ventures also participated, alongside investor Peter Thiel. Etched's valuation has now roughly quadrupled since December, when it was valued at $5 billion.
Betting on inference, not training
Rather than compete with Nvidia head-on across the entire AI computing stack, Etched has focused narrowly on inference — the computing that happens after an AI model is already trained, each time it responds to a user. The company sells what it calls "frontier inference clusters," built around a low-voltage prefill chip designed for the compute-intensive first stage of generating a response, paired with a memory system that lets multiple chips share data at high speed for the second, memory-intensive stage. According to TechCrunch, Etched says it went from receiving test chips from Taiwan Semiconductor Manufacturing to running inference workloads in 44 days, versus six months or more typical for a new chip design.
Jane Street received its first rack of Etched hardware last month and has since moved it into production. The trading firm's endorsement matters in a market where few outside buyers have been willing to bet mission-critical workloads on chips other than Nvidia's.
Jane Street putting this cluster into production is proof of what we've built. Now, we're sprinting on scaling production for the rest of our customers.
Gavin Uberti, co-founder and chief executive, Etched
The company, founded by three Harvard dropouts, says it has now secured more than $1 billion in customer contracts spanning frontier AI labs and cloud providers, and is building three generations of hardware in parallel to keep pace with demand. Kleiner Perkins managing partner Mamoon Hamid, whose firm backed the round, said the bet reflects a broader shift in where AI spending is heading: "Inference is becoming one of the most important infrastructure markets in AI."
Etched is one of a small but growing cluster of startups — alongside companies like Groq and Cerebras — trying to carve out space in a chip market Nvidia still dominates by a wide margin. Whether a $21 billion valuation for a company with a single disclosed customer proves durable will depend on how quickly Etched can convert its pipeline of contracts into shipped, revenue-generating hardware.
