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Sparks of Weight-Space Programming: LLMs can natively read & write neural network weights

— Rikiya Takehi, Jayden Teoh, Alex Zhang, Omar Khattab

Frontier LLMs can read raw neural network weights to tell what a network does, and write or edit weights directly without training loops, such as fixing a reasoning-loop issue in Qwen3.5-0.8B by editing 0.016% of its weights.

Added

Nov 3, 2026

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