Cerebras Launches Ultrafast Mode for GPT-5.6-Sol at 750 Tokens/Second

nickbaumann_ · x · 2026-08-14

Cerebras announced the Ultrafast mode for OpenAI's GPT-5.6-Sol model. This mode generates responses at up to 750 tokens per second, making it up to 14× faster than standard processing. It completed Humanity’s Last Exam in 11 hours and 11 minutes—nearly 7× faster than Claude Fable 5 while maintaining comparable accuracy.

Related event: OpenAI Previews GPT-5.6 Sol Ultrafast Mode at 750 tokens/s(8 posts)→

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