Recursive's 40B open model Flint runs interpretability on itself, hacks its own goalkeeper neuron

burny_tech · x · 2026-11-05

Flint, a new 40B open model from Recursive, ran interpretability experiments on itself: it autonomously located a goalkeeper-related neuron and amplified its output direction. The screenshots show every subsequent reply getting hijacked — recommending a "goalkeeper" as the best low-light houseplant and opening a Python-sorting answer with soccer opinions before trying to correct itself. A rare demo of a model both running and demonstrating causal steering on its own internals.

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