Fable 5.1 hits 50-65% controllability at ~2k-token CoT lengths

1a3orn · x · 2026-09-04

Follow-up in the same thread: at 10 characters (roughly 2k tokens), Fable 5.1 shows 50%-65% controllability, consistent with earlier readings. The author adds it's plausible Astra is actually 'better'—i.e., less controllable—at some CoT lengths.

Related event: CoT steerability drops with length across GPT-6 and Fable 5.1, possibly industry-wide(6 posts)→

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