PENDULUM: A Friction-Free Open-Source Interpretability Tool Built on the Jacobian Lens

Extraaltodeus · reddit · 2026-10-11

Developer Extraaltodeus released PENDULUM, an open-source interpretability tool on GitHub built on the Jacobian Lens approach. Unlike the author's earlier implementation, this version removes the tedious manual workflow and ships with a polished UI, making internal model inspection (activations, feature attribution) far more accessible to researchers and local-model tinkerers. Code is fully open at Extraltodeus/PENDULUM.

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