Etched bets everything on a transformer-only chip; $1B orders before first racks ship

Etched designs Sohu, an application-specific integrated circuit that only runs transformer-model inference, and sells frontier inference clusters — racks combining its chips with custom hardware and software — to AI companies.

Transformers stay the dominant AI architecture, so a chip that runs only transformer inference — dropping every other workload — can beat GPUs 20x on speed and cost.

Disclosed rounds: $5.4M seed at a $34M valuation (Mar 2023); $120M Series A led by Primary Venture Partners (Jun 2024); $500M at a $5B post-money valuation led by Stripes (Dec 2025); $300M Series C led by Sequoia at a $10.3B valuation (Jul 2026).

Gavin Uberti, Robert Wachen and Chris Zhu dropped out of Harvard and founded Etched in 2022 after writing a 30-page memo arguing that AI would eventually need specialized silicon, not general-purpose GPUs. In 2023 every major investor they pitched passed, and the company ran month-to-month, close to running out of cash, before closing a $5.4M seed in March 2023 at a $34M valuation.

In June 2024 Etched launched Sohu publicly and raised a $120M Series A led by Primary Venture Partners with Peter Thiel and Amjad Masad participating, claiming a Sohu server runs Llama 70B at 500,000 tokens per second and replaces 160 H100s. TSMC fabricated the chip on its 4nm process, and the A0 tape-out succeeded in early 2026. In December 2025 Etched quietly closed a $500M round at a $5B post-money valuation led by Stripes, with Jane Street, Hudson River Trading, Two Sigma and Ribbit Capital participating.

On 2026-06-30 Etched came out of stealth: TSMC had manufactured the chip, the company had booked over $1B in signed contracts for frontier inference clusters before shipping production racks, and it disclosed about $800M raised. On 2026-07-23 Sequoia led a $300M Series C at a $10.3B valuation — which Forkast reported as the highest valuation ever for a Sequoia-led Series C — with SK Hynix investing. First production racks were scheduled for summer 2026; the chip had still not shipped at scale or been independently benchmarked.

Fixed-function silicon only wins if the workload is stable, so Etched bet on transformer attention outlasting every rival architecture.

The 2023 funding failure shows the bet was not obvious: specialized inference silicon became fundable only after the AI boom made inference the bottleneck.

Vertical integration (chips plus custom racks, software and data centers) lets Etched sell a system, not just a component, to customers without Nvidia-scale engineering teams.

$1B of pre-orders before first shipments converts architectural conviction into a demand signal investors can price.

Specialization only pays off when the market arrives: Etched's 2023 memo was refused by every major investor, and the AI boom funded a chip that still has not shipped.

As of 2026-09-02, Etched is a roughly $10.3B company (per its July 2026 Sequoia-led Series C) with about $1.1B raised, over 400 employees, and more than $1B in signed contracts for Sohu-based frontier inference clusters. TSMC manufactured the A0 chip on its N4P process in early 2026; first production racks were scheduled for summer 2026, and Etched operates a 2 MW data center in San Jose plus a 10 MW facility in Milpitas. The chip has not yet shipped at scale or been independently benchmarked, and the entire thesis remains exposed to a shift away from transformer architectures.