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Course in preparation · Coming soon

Interpretability: Probes, Features and Circuits

Look inside a small open model and test what you think you see. Train probes, find features with a sparse autoencoder, trace a circuit, and run the control that could prove each claim wrong.

Who it is for. Researchers and engineers drawn to interpretability teams, who want hands-on work with model internals rather than reading about it.

The planned syllabus

Planned lessons will help you understand each method, apply it to an AI problem, and judge whether the result holds up.

  1. 01

    Activations and the residual stream

    Hook a small model, record its activations, and know what each one is.

  2. 02

    Linear probes and their controls

    Train a probe, then a control task, so a high accuracy means something.

  3. 03

    Sparse autoencoders

    Train one on a small model's activations and judge which features are real.

  4. 04

    Circuits and patching

    Activation patching and ablation: find which components carry a behavior.

  5. 05

    Claims that hold up

    Write an interpretability result with its evidence, its controls and its limits.