AI chip startup Cerebras aims for an IPO with a valuation of $26.6 billion, with deep ties to OpenAI through loans, subscriptions, and large-scale procurement

AI Chip Startup Cerebras Announces an IPO Priced at $115 to $125 per Share, Raising $3.5 Billion with a Market Cap of $26.6 Billion. OpenAI is not only Cerebras’s largest customer but also exchanged a $1 billion loan for warrants and signed long-term compute contracts exceeding $20 billion
(Background: OpenAI spent over $20 billion to buy Cerebras compute power + exchanged for 10% equity, sparking questions if this is Sam Altman’s self-enrichment scheme?)
(Additional context: Altman: Smarter models are more important than cheaper ones; GPT-5.5 consumes fewer tokens per task)

From delaying its IPO in 2024 due to a federal security review triggered by Abu Dhabi sovereign fund G42’s holdings, to completing an $810 million funding round at an $8.1 billion valuation in September 2025, and then raising $1 billion at a $23 billion valuation in February 2026 — Cerebras’s path to going public has taken a full two years.

Now, this journey has finally reached its end, as Cerebras officially announces the launch of its IPO process, planning to issue 28 million shares at a price range of $115 to $125, aiming to raise $3.5 billion, with a high-end valuation of $26.6 billion.

Bloomberg reports that orders received by banks have already exceeded $10 billion, nearly three times the available supply. If the pricing exceeds the upper limit of the range, this will be the largest tech IPO globally in 2026 to date.

Not just a chip company: How WSE-3 Challenges NVIDIA’s GPU Dominance

Cerebras’s core product is the independently developed Wafer-Scale Engine 3 (WSE-3), a wafer-level processor designed specifically for AI inference. The S-1 filing discloses that WSE-3 outperforms GPU-based competitors in inference tasks, with faster speeds and lower power consumption.

“Inference” is currently the biggest power-consuming black hole in the AI industry. As major language models enter large-scale deployment, each user input requires massive computational power to respond in real time.

NVIDIA dominates this market with H100, H200, and Blackwell series GPUs, but Cerebras chooses to bypass the GPU architecture by using an entire wafer as a single processing unit, significantly reducing data transfer distances within the chip.

Cerebras Shareholder Status

Major shareholders include Alpha Wave (led by Rick Gerson), Benchmark, Eclipse (Lior Susan), Fidelity, and Foundation Capital, each holding over 5%.

Other institutional investors include Altimeter, AMD, Coatue, Tiger Global, among others.

Angel investors are directly from the core AI industry circle: OpenAI CEO Sam Altman, former CTO Greg Brockman, former Chief Scientist Ilya Sutskever, OpenAI board member and Quora CEO Adam D’Angelo, Sun Microsystems and Arista co-founder Andy Bechtolsheim, and Intel CEO Lip-Bu Tan.

OpenAI as Customer, Lender, and Potential Shareholder

The relationship between Cerebras and OpenAI is complex and multi-dimensional.

The S-1 filing discloses that OpenAI is one of Cerebras’s largest customers. In December 2025, OpenAI provided a $1 billion loan to Cerebras at 6% annual interest, and obtained warrants for over 33.4 million Class N non-voting shares.

In January 2026, the two parties further signed a multi-year compute supply agreement, valued at over $10 billion, covering a total of 750 MW of compute capacity through 2028, with an estimated total value exceeding $20 billion.

OpenAI currently does not hold enough shares to qualify as a major shareholder, but exercising all warrants would elevate it to a significant shareholder. This structure means OpenAI’s interests are directly tied to Cerebras’s IPO success: the higher the IPO price, the greater the potential gains from warrants; the more mature Cerebras’s inference chips become, the more likely OpenAI’s own compute costs will benefit.

Sam Altman appears personally on the angel investor list, holding less than the SEC’s 5% disclosure threshold, but Cerebras explicitly cites his public endorsement in the S-1. This arrangement continues to fuel concerns over conflicts of interest (an AI infrastructure company’s angel investor who is also its largest customer CEO).

IPO as a Market Signal

If Cerebras completes its IPO at a valuation of $26.6 billion or higher, it will serve as a significant stress test for the tech IPO market in the first half of 2026. Series H investors could see paper gains within three months, and the $23 billion valuation could be further validated in the secondary market.

More importantly, the subsequent ripple effects are worth noting. The market generally views this IPO as a litmus test for large unlisted tech unicorns like SpaceX, OpenAI, and Anthropic entering the public markets. If Cerebras manages to price successfully with three times oversubscription, it indicates that the valuation logic for “compute infrastructure” remains intact and unshifted.