Cerebras 与 OpenAI 推出 GPT-5.6 Sol Ultrafast 模式
原标题：Accelerating GPT-5.6 Sol Ultrafast August 13, 2026
AI 摘要
Cerebras 与 OpenAI 联合发布 Ultrafast Mode 服务层级，首先在 OpenAI API 中上线并由 Cerebras 提供算力支持，目前面向少数客户限量预览。该模式驱动 GPT-5.6 Sol，输出速度最高达每秒 750 tokens，且不牺牲质量。Cerebras 称在 Humanity's Last Exam 基准上，Ultrafast 完成全部 2500 题仅需约 11 小时，比 Claude Fable 5 快近 7 倍；在 GDP-Val 上实现 5.6 倍端到端加速。该能力依托 Cerebras 晶圆级引擎架构，将 44GB SRAM 置于片上以减少数据搬运。
正文节选
Today, Cerebras and OpenAI are sharing an early look at Ultrafast Mode, a new service tier launching first in the OpenAI API and powered by Cerebras. Ultrafast is available initially to a select group of customers, with access expanding over time. Cerebras powers GPT-5.6 Sol on Ultrafast mode, delivering up to 750 output tokens per second and without any quality compromise, allowing Sol Ultrafast to accelerate your most time-sensitive, mission-critical work. Frontier Intelligence at Unprecedente