Grafted artificial neurons lift a 135M model's multiplication accuracy from 21% to 83%

CatAstro_Piyush · x · 2026-11-08

cybermynd shares a "brain surgery" experiment on a tiny 135M-parameter model: by grafting artificial neurons directly into the network, they changed how it solves problems, lifting accuracy on unseen multiplication problems from 21% to 83% — with no training at all. It's a striking example of directly editing a model's internal computation instead of fine-tuning it.

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