- OpenAI struck a deal to spend more than $20 billion on Cerebras chips and receive an equity stake in the company, The Information first reported.
- The commitment doubles the $10 billion+ partnership OpenAI and Cerebras announced in January—and signals a serious move to break free from Nvidia.
- Cerebras refiled to go public this week, and the OpenAI deal gives the startup exactly the kind of anchor customer investors want to see.
OpenAI just made the biggest AI chip deal in history—and Nvidia’s moat is looking a little thinner. The ChatGPT maker has agreed to spend more than $20 billion on server chips from Cerebras Systems and will receive an equity stake in the semiconductor startup, The Information reported Wednesday.
The commitment more than doubles the original partnership the two companies announced in January, which was already valued at over $10 billion. That deal got OpenAI’s first Cerebras-powered model—GPT-5.3-Codex-Spark—out the door in February, with Bloomberg noting that Codex had already crossed 1 million weekly active users.
Why OpenAI Is Betting $20 Billion on a Nvidia Alternative
The math is straightforward. Nvidia controls roughly 80% of the AI accelerator market, and OpenAI has spent the better part of 2025 and 2026 paying through the nose for it. Reuters reported in February that OpenAI was unsatisfied with some of Nvidia’s latest chips and had been seeking alternatives since last year. Cerebras’s wafer-scale engine—the largest chip ever manufactured, roughly the size of a dinner plate—offers a fundamentally different architecture for running large language models at inference scale.
The equity stake is the tell. OpenAI isn’t just buying hardware—it’s planting a flag. By taking a stake in Cerebras, OpenAI ensures the startup has the capital to scale manufacturing while guaranteeing itself a non-Nvidia supply chain for years to come. It’s the same playbook Microsoft ran with OpenAI itself: invest in your most critical dependency.
Cerebras, for its part, timed things perfectly. The company refiled to go public this week after scrapping IPO plans last year. Having OpenAI as a committed, $20 billion customer with an equity stake is exactly the kind of anchor relationship that makes underwriters comfortable—and that prediction markets have been watching closely.
The deal also reshapes the competitive landscape in ways that extend beyond chips. With TSMC posting record $18 billion quarters and OpenAI racing Anthropic to lock down enterprise customers, compute access is becoming the defining competitive advantage in AI. Twenty billion dollars buys a lot of inference capacity—and if Cerebras can deliver at the scale OpenAI needs, Nvidia’s pricing power evaporates.
Nvidia’s stock dipped 2.3% on the news Thursday morning. Cerebras doesn’t trade yet—but it just got the only customer endorsement that matters.
