Neural Thickets: adding noise to LLM weights boosts reasoning for free — it's just sampling in disguise

kastnerkyle · x · 2026-10-31

A repost of nicodufour's thread on Neural Thickets (@yulegan, @phillipisola): inject random noise into an LLM's weights, keep the best copies, and let them vote — reasoning improves with no training at all.

The follow-up explains why it works: it's sampling in disguise. Swapping noise on billions of weights for a single random vector on the logits yields the same gains, suggesting the benefit comes from decode-time randomness rather than the weight perturbations themselves.

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