§ openai-sdk · storyline
Previewing Ultrafast mode: GPT-5.6 Sol at up to 14X the speed
OpenAI previews Ultrafast, an API tier running GPT-5.6 Sol at up to 14× speed via Cerebras hardware, delivering up to 750 output tokens per second.
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.
§ sources1 publication · timeline below