GPT-5.6 hits 750 tokens/sec in Ultrafast mode, writes 90k-word novel in under 3 minutes
PeterDiamandis · x · 2026-08-14
Peter Diamandis tweets that GPT-5.6's Ultrafast mode achieves 750 tokens per second, 14x faster than the standard model. At this rate, it can write a complete 90,000-word novel in under 3 minutes. He argues the economics of knowledge work have permanently changed and we are still in the early innings.
Related event: OpenAI and Cerebras Preview Ultrafast Mode for GPT-5.6 Sol at 750 Tokens/s(20 posts)→
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