GPT-5.6 Sol Ultrafast Hits 750 Tokens/s, 7x Faster Than Claude Fable 5

petrusenko_max · x · 2026-08-14

GPT-5.6 Sol Ultrafast claims 750 tokens/sec without quality loss, answering 2,500 PhD-level questions nearly 7x faster than Claude Fable 5 and 5.6x faster on economic tasks.

Related event: OpenAI and Cerebras Preview Ultrafast Mode for GPT-5.6 Sol at 750 Tokens/s(20 posts)→

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