# OpenAI Previews a Cerebras-Powered Tier Running GPT-5.6 Sol at 750 Tokens per Second

The Ultrafast service tier claims up to 14 times the throughput of standard serving on the same model, drawing on a supply agreement Cerebras values at more than $20 billion.

- Published: 2026-08-14T06:27:18.545Z
- Canonical: https://polylog.news/ai/2026-08-14/openai-previews-a-cerebras-powered-tier-running-gpt-5-6-sol
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [OpenAI](https://openai.com/index/previewing-ultrafast), [OpenAI](https://openai.com/index/builders-guide-to-gpt-5-6)

OpenAI opened a limited preview of Ultrafast, an application programming interface (API) service tier that runs GPT-5.6 Sol at up to 750 output tokens per second, which the company puts at up to 14 times the throughput of the same model on…

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