Late-layer neurons in Qwen act like on-off switches, unlike Olmo
Sauers_ · x · 2026-09-29
The author, working with Claude Opus 5.5, reports that neurons in late layers of Qwen models behave like on-off switches — a pattern not observed in Olmo.
This hints at structural differences between model families in late-layer activation sparsity/binarization, which could matter for interpretability analysis. Few further details are given.
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