#model organisms

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An accelerator node with a breakout riser card drawn part-way out on its rails, its ribbon cable landing on a compact activation-capture instrument beside it

How Mechanistic Interpretability Research Is Actually Done

Before any claim about what a model is doing, someone ran a forward pass, trained a probe, decomposed an activation into sparse pieces, and changed something on purpose to see what moved. This is that process, in the order it actually happens.

By Brecht Corbeel · August 12, 2026 · 19 min read

A tamper-evident foil seal lifting at one corner from a small archival case, the edge of a reference board visible inside, with two racked instrument nodes standing beyond on a bright bench

AI Research

How Do We Know an Interpretability Claim Is Actually Right?

A feature-visualization narrative that looks right and a circuit that has been checked against a known answer are different kinds of evidence. Most published claims sit closer to the first than the coverage of them usually admits.

By Brecht Corbeel · August 12, 2026 · 16 min read

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