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GPT-6 Astra vs Claude Fable 5.1 based on the benchmarks available so far

This story is from 2026-09-04. It is preserved in the archive; the latest stories are on the live feed.

I collected the public benchmark results I could find for GPT-6 Astra and Claude Fable 5.1 and put them side by side. So far the picture looks fairly mixed. GPT-6 Astra leads on several published coding, science and agent benchmarks, including Terminal-Bench and DeepSWE, while Fable 5.1 still perfo…

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Timeline · 2 reports

  1. 2026-09-05 15:31 · r/singularity
    A Slinky Down an Escalator - GPT 6 Astra max vs Claude Fable 5.1 max
  2. 2026-09-04 03:26 · r/OpenAI
    GPT-6 Astra vs Claude Fable 5.1 based on the benchmarks available so far

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