88 nodes, 2,099 edges: the circuit behind a model computing 36+59
JacobHHilton · x · 2026-10-17
Jacob Hilton shares the detailed attribution graph a model produces when computing 36+59: 88 nodes and 2,099 edges, asking "Do I now understand how this model performs 36+59?"
Technical notes: he used an LLM to add text labels (hover-only in the original interface) so the graph is viewable as a plain image, and avoided the provided subgraph because it was produced via an ad-hoc manual process.
A vivid illustration of circuit-level interpretability output complexity — even trivial arithmetic expands into a near-hundred-node graph.
Related event: ARC's Jacob Hilton Sparks Debate: Interpretability Far From Solved(22 posts)→
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