© Neuronpedia 2026
    Privacy & TermsBlogGitHubSlackTwitterContact
    Neuronpedia logo - a computer chip with a rounded viewfinder border around it
    Neuronpedia
    Jacobian LensNEW
    Natural Language
    Autoencoders
    MAY 26
    Assistant AxisJAN 26Circuit TracerAPR 26SteerSAE EvalsExportsinterp-engineNEW Community BlogPrivacy & TermsContact
    Side-by-side compare needs a wider screen.
    Open other featureClose compare
    PrevNext
    Close
    Circuit Sparsity
    No connected neurons data available
    Explanations

    is .isalnum() or .isalpha()

    python-code · gemini-2.5-flash-lite
    Auto-Interp Tools
    Top Features by Cosine Similarity
    Configuration
    Prompts (Dashboard)
    16,384 prompts, 256 tokens each
    Dataset (Dashboard)
    neuronpedia/python-code-simplified
    No Configuration Found
    Embeds
    IFrame
    Link
    Negative Logits
    yp
    -0.08
     typ
    -0.06
    ords
    -0.06
    ype
    -0.06
    lable
    -0.06
    isit
    -0.05
    _type
    -0.05
    type
    -0.05
    ord
    -0.05
    instance
    -0.04
    Positive Logits
    ()<|
    0.05
    ub
    0.05
     by
    0.05
    _by
    0.05
    ()↵↵
    0.05
    ()↵
    0.05
    ob
    0.05
    ():↵
    0.04
    _sub
    0.04
    ())
    0.04
    Activations Density 76.976%

    No Known Activations

    PrevNext
    Close
    Circuit Sparsity
    No connected neurons data available
    Explanations

    float literal separator (negative activations)

    python-code · gemini-2.5-flash-lite

    for loop syntax

    python-code · gemini-2.5-flash-lite
    Auto-Interp Tools
    Top Features by Cosine Similarity
    Configuration
    Prompts (Dashboard)
    16,384 prompts, 256 tokens each
    Dataset (Dashboard)
    neuronpedia/python-code-simplified
    No Configuration Found
    Embeds
    IFrame
    Link
    Negative Logits
    vent
    -0.07
    ay
    -0.05
    input
    -0.05
     all
    -0.04
    all
    -0.03
    _i
    -0.03
     {
    -0.03
    Ã
    -0.03
    {
    -0.03
    bs
    -0.03
    Positive Logits
    arehouse
    0.05
    udent
    0.05
    light
    0.04
    uild
    0.04
    stac
    0.04
    liver
    0.04
    rontier
    0.03
     self
    0.03
    mployee
    0.03
    ruck
    0.03
    Activations Density 58.787%

    No Known Activations