Etched's valuation doubles to $21B in a month

AI chip startup Etched has raised another $700 million at a $21 billion valuation, led by Jane Street, after the quant fund tested and bought the company's hardware. The step-up is remarkably fast even by AI standards: Etched was valued at $5 billion in December, and investors have now doubled that figure, adding close to $11 billion in about a month. Etched delivers its AI technology as full systems it calls “frontier inference clusters,” the same full-system approach that Nvidia markets as AI factories, rather than selling bare chips. Co-founder and COO Robert Wachen told TechCrunch that investor enthusiasm stems from two components Etched designed from scratch to speed up inference — the computing that happens after a user submits a prompt. Inference is built in two stages: prefill and decode. For the compute-intensive prefill phase, in which the system must understand the prompt and its context, Etched created a low-voltage chip that packs in more transistors without the heat problems typical of high-end AI chips, letting it process more tokens faster. For the memory-intensive decode phase, it built a new type of memory and interconnect it calls cluster-scale memory, allowing many chips to connect and share a memory pool at very low latency. Jane Street, which now runs an Etched rack in its own datacenter, said: “We tested the chip and are pleased with the early results. Etched's unique approach to inference delivers the precision we will need to support our most demanding workloads.” Etched is still shaking the early perception that it etches a particular model into its chips — that was the original intention, but the company says its systems can now run any frontier model. Other backers include Kleiner Perkins, Sequoia Capital, Andreessen Horowitz, Peter Thiel, Tiger Global, Bain Capital Ventures, and Blackstone. The round is a major validation of specialized inference silicon at a moment when AI infrastructure spending is exploding, and it shows sophisticated buyers like Jane Street are willing to bet on alternatives to Nvidia. Watch whether Etched can convert early orders into meaningful market share against the incumbents.