OpenAI· GPT / ChatGPT / APIProduct launch

Previewing Ultrafast mode: GPT-5.6 Sol at up to 14X the speed

OpenAI previews Ultrafast, a new API service tier for GPT-5.6 Sol that offers up to 14× faster inference and up to 750 output tokens per second, powered by Cerebras hardware.

From the source

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.

openai.com

Around this story

• TechCrunchreported4 days agoOpenAI introduces ‘Ultrafast,’ a new mode that makes GPT-5.6 Sol work at 14x the speedreported4 days ago

Also covered byThe Decoder,TestingCatalog AI News+9 more11 outlets▾▴

• The DecoderGPT-5.6 Sol goes 14x faster as OpenAI launches Ultrafast mode powered by Cerebras
• TestingCatalog AI NewsOpenAI previews Ultrafast API tier for GPT-5.6 Sol

Announced

13 Aug 2026 10:00 UTC