Fable 5.1 likely matches Astra on CoT controllability, observers say

Miles_Brundage · x · 2026-09-04

Observers on X suggest Fable 5.1 likely has chain-of-thought controllability on par with Astra, citing a short demo showing the control achieved in remarkably few characters — a side-by-side look at CoT controllability across frontier models.

Related event: CoT steerability declines with length across GPT-6 and Fable 5.1, comparison shows(7 posts)→

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