Previewing Ultrafast mode: GPT-5.6 Sol at up to 14X the speed
PreviewVerifiedAdded Sep 22, 2026
Preview Ultrafast, a new OpenAI API service tier that runs GPT-5.6 Sol up to 14× faster. Powered by Cerebras, it delivers up to 750 output tokens per second.
Topics: LLMs, Developer tools, Performance
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More ChatGPT releases
Every ChatGPT release| Date | Release | Type |
|---|---|---|
| Aug 11 | Testing ads in ChatGPT Update | Update |
| Aug 11 | Daybreak models are now available on AWS Update | Update |
| Aug 10 | Expanding Daybreak as the Cyber Defense Window Narrows Update | Update |
| Aug 10 | Putting frontier cyber models in more trusted hands Update | Update |
| Aug 10 | Premium seats are coming to ChatGPT Business Pricing | Pricing |
| Aug 18 | ChatGPT Ads expands across Europe Update | Update |
| Aug 18 | Introducing ChatGPT for Teens: Built for learning, backed by protections Update | Update |
| Aug 19 | Offering Zero Data Retention for frontier models Preview | Preview |
