OpenAI introduces ‘Ultrafast,’ a new mode that makes GPT-5.6 Sol work at 14x the speed

OpenAI introduced Ultrafast, a new mode for GPT-5.6 Sol that accelerates processing to 14x standard speed, delivering up to 750 tokens per second. The preview is initially limited to a small group of customers and powered by a partnership with Cerebras.

From the source

The company says that Ultrafast can work at 14x the speed of standard processing, delivering up to 750 output tokens per second.

techcrunch.com

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
• RuntimeWireOpenAI acquired 4.2% of Cerebras before GPT-5.6 Ultrafast launch
• Unite.AICerebras Runs OpenAI’s GPT-5.6 Sol at 750 Tokens Per Second in New Ultrafast Tier
• Decrypt

Announced

13 Aug 2026 19:22 UTC