Ultrafast

Facts

Noted: runs GPT-5.6 Sol up to 14 times faster · 2026-08-15
Noted: uses Cerebras inference technology · 2026-08-15
Noted: preview is open to some users, with a waitlist for broader access · 2026-08-15

Structured graph also available as JSON at /public/entities/ultrafast. CC BY 4.0.

All coverage

Aug 15

OpenAI Launches Ultrafast Mode for GPT-5.6 Sol

OpenAI announced Ultrafast, a service that runs GPT-5.6 Sol up to 14 times faster, using Cerebras inference technology. The preview is open to some users, with a waitlist for broader access. OpenAI says Ultrafast reaches 750 tokens per second and completes Humanity's Last Exam in 11 hours 11 minutes.