# Cerebras Delays First OpenAI Capacity Tranches Under $20 Billion Deal

> Cerebras is behind schedule on the first 250 MW tranche of its 750 MW OpenAI deal, citing slower data center contracting and a 165 MW Finland site in progress.

- Published: 2026-11-12T22:38:50+00:00
- Section: Expansion
- Author: News Desk
- URL: https://newsforagent.com/news/2026-11-12/cerebras-openai-capacity-tranche-delays
- Source: [Crypto Briefing](https://cryptobriefing.com/cerebras-delays-openai-capacity-tranches/)

## Key takeaways

- Cerebras signed a Master Relationship Agreement with OpenAI on December 24, 2025, covering 750 MW of inference capacity in three equal tranches.
- The first 250 MW tranche is due by the end of 2026, and Cerebras says data center contracting is moving slower than planned.
- Cerebras is pursuing a 165 MW facility in Finland among new sites in North America and Europe.
- OpenAI extended Cerebras a $1 billion working-capital loan in January 2026 to support the buildout.

Cerebras Systems is behind schedule on the first capacity tranches it owes OpenAI under a deal estimated at more than $20 billion, with the first 250 megawatts due by the end of 2026. [Crypto Briefing](https://cryptobriefing.com/cerebras-delays-openai-capacity-tranches/) reported the delay on November 12, 2026, citing data center contracts taking longer than planned.

## Cerebras's 750 MW OpenAI Agreement

[Cerebras Systems](https://akta.pro/company-profiles/00000ku/cerebras-systems) designs wafer-scale AI processors and the CS-3 system, and it went public on the Nasdaq in May 2026 under the ticker CBRS. The company and [OpenAI](https://akta.pro/company-profiles/0000008/openai) signed a Master Relationship Agreement on December 24, 2025, under which OpenAI agreed to buy 750 MW of inference capacity. The capacity is split into three equal tranches: 250 MW by the end of 2026, another 250 MW by the end of 2027, and the final 250 MW by the end of 2028. The agreement also includes bonuses tied to performance metrics, and OpenAI holds an option for an additional 1.25 gigawatts of capacity by 2030.

Cerebras has attributed the delay to data center contracts that are taking longer than planned, describing the pace of securing facilities as moving at "the speed of real estate." In January 2026, OpenAI extended Cerebras a $1 billion working-capital loan to support the buildout. Cerebras reported a surge in cloud revenue for Q3 2026 and raised its full-year sales guidance, and its backlog now exceeds $25 billion, with a significant portion tied to the OpenAI agreement.

## Cerebras's Funding and Revenue Figures

According to akta.pro [company records](https://akta.pro/company-data), Cerebras completed its Nasdaq IPO in May 2026 at $185 per share, raising approximately $5.55 billion. The same records list a $20 billion multi-year agreement with OpenAI to deploy 750 megawatts of high-speed AI inference compute, with OpenAI running GPT-5.4 on Cerebras hardware and GPT-5.5 in the porting process. The records also show a $1 billion debt-funded round in January 2026 led by OpenAI and a $1 billion Series H in February 2026 led by Atreides Management, Fidelity and Tiger Global Management.

## Cerebras's Path to the OpenAI Buildout

In October 2026, Cerebras said it deploys trillion-parameter models by splitting them across multiple WSE-3T wafers, each with 44 GB of on-chip memory, according to [Cerebras](https://cerebras.ai). The company collaborated with the Institute of Foundation Models and Inception42 to launch Jais 3, an Arabic-native AI for speech, writing and agents, Stock Titan reported that month. In March 2026, Cerebras entered a multi-year strategic partnership with Amazon Web Services for disaggregated inference combining AWS Trainium with CS-3 systems, its first hyperscaler cloud channel.

## Cerebras's Finland Site and 2026 Deadline

Cerebras is pursuing new data center sites across North America and Europe, including a 165 MW facility in Finland that the company is working to secure. The first 250 MW tranche remains due by the end of 2026.

## Companies in this story

- [Cerebras Systems company profile](https://akta.pro/company-profiles/00000ku/cerebras-systems) · website: https://cerebras.ai
- [OpenAI company profile](https://akta.pro/company-profiles/0000008/openai) · website: https://openai.com

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