Cerebras seeks $26.62 billion IPO valuation, testing AI chip investor appetite
Cerebras sought a $26.62 billion valuation as it tried to convince investors its wafer-scale chips and OpenAI deal justify more AI boom premium.
Cerebras was asking investors to pay a $26.62 billion valuation for a company betting that a radically larger chip can win a lasting place in the AI stack beyond Nvidia. The Sunnyvale, California, firm planned to sell 28 million shares at $115 to $125 each, a deal that would raise about $3.50 billion and marked its second attempt to go public after it withdrew an earlier filing on Oct. 3, 2025.
The offering put a sharp question in front of public markets: are investors rewarding genuine hardware differentiation, or simply paying premium prices for anything tied to AI infrastructure? Cerebras built its business around wafer-scale engine chips designed to speed the training and inference of large models. Its pitch rested on packing massive compute and memory onto a single piece of silicon, then tying that hardware to a purpose-built system and software stack aimed at delivering speed for customers on premises and in the cloud.
That argument mattered because the AI infrastructure market has become crowded. Cerebras described its WSE-3 as having four trillion transistors and 125 petaflops on one silicon wafer, a claim meant to underscore how far it pushes beyond conventional chip design. The company was founded in 2015 by Andrew Feldman, Gary Lauterbach, Michael James, Sean Lie and Jean-Philippe Fricker, and it said it launched WSE-1 with the CS-1 system in 2019, followed by WSE-2 and CS-2 in 2021 and WSE-3 and CS-3 in 2024.
The company also leaned on scale and customer traction. Cerebras said Condor Galaxy 1, unveiled with G42 in 2023, delivered 4 exaFLOPs of FP16 performance and 54 million cores. It said it powered Meta’s Llama API, Perplexity, Mistral, Hugging Face and OpenRouter, while expanding datacenter capacity across North America and Europe. In a market where chipmakers must prove either clear performance gains or cost advantages, those details were central to the case for a public valuation that rivaled some of the biggest names in the sector.
The filing came after a stop-start path through Washington. Cerebras withdrew its Sept. 30, 2024 S-1 on Oct. 3, 2025, saying it did not intend to conduct the offering at that time. SEC records then showed a draft registration statement on Dec. 22, 2025, an amended draft on March 31, 2026 and a new S-1 filed April 17, 2026. The earlier filing listed Andrew Feldman as chief executive officer and president and the company’s headquarters in Sunnyvale.
The IPO also followed a $1 billion late-stage round earlier in the year that valued Cerebras at $23 billion and a multi-year OpenAI deal valued at more than $20 billion, under which OpenAI would deploy 750 megawatts of Cerebras compute. If the shares priced near the top of the range, it would signal that the market still rewards companies sitting close to a strategic bottleneck in the technology stack. If not, the message would be that AI exposure alone is no longer enough.
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