Neel Nanda replicates Astra system card: no-CoT reasoning jumps 1.75x over next-best models

NeelNanda5 · x · 2026-09-11

Neel Nanda replicated the Astra system card's claim of doing substantial computation without chain of thought: Astra takes 1.75x the steps of the next-best models (Fable 5.1/Gemini 3.8 Flash) with no CoT, and no-CoT capabilities improved far more than with-CoT ones.

Related event: Astra's No-CoT Reasoning Surge Raises Safety Concerns(7 posts)→

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