© Neuronpedia 2026
    Privacy & TermsBlogGitHubSlackTwitterContact
    Neuronpedia logo - a computer chip with a rounded viewfinder border around it

    Neuronpedia

    Natural Language
    Autoencoders
    NEW    Assistant AxisNEWCircuit TracerUPDATESteerSAE EvalsExportsAPI Community BlogPrivacy & TermsContact
    1. Home
    3. Joseph Bloom · Open Source Sparse Autoencoders for all Residual Stream Layers of GPT2-Small
    5. GPT2-Small
    7. Residual Stream
    9. 2-RES-JB
    11. 12445
    Prev
    Next
    INDEX
    Explanations

    phrases or words related to the term "Fen" such as "Fenway" or "Fenner"

    oai_token-act-pair · gpt-3.5-turbo

    mentions of the drug Fenmethylline and its variations

    oai_token-act-pair · gpt-4o-miniTriggered by @bot
    New Auto-Interp
    Top Features by Cosine Similarity
    Comparing With GPT2-SMALL @ 2-res-jb
    Configuration
    jbloom/GPT2-Small-SAEs-Reformatted/blocks.2.hook_resid_pre
    Prompts (Dashboard)
    24,576 prompts, 128 tokens each
    Dataset (Dashboard)
    Skylion007/openwebtext
    Features
    24,576
    Data Type
    torch.float32
    Hook Point
    blocks.2.hook_resid_pre
    Architecture
    standard
    Context Size
    128
    Dataset
    Skylion007/openwebtext
    Hook Point Layer
    2
    Activation Function
    relu
    Embeds
    IFrame
    Link
    Not in Any Lists

    No Comments

    Negative Logits
    eering
    -0.78
    stakes
    -0.75
    dress
    -0.66
     vertically
    -0.61
    */(
    -0.61
    henko
    -0.61
    stage
    -0.60
    anwhile
    -0.60
     AMA
    -0.60
    cules
    -0.60
    POSITIVE LOGITS
    nec
    1.11
     Fen
    1.02
    ruary
    0.92
    terness
    0.88
    cers
    0.82
    omen
    0.82
    cil
    0.81
    combe
    0.81
    brook
    0.80
    iHUD
    0.76
    Activations Density 0.008%

    No Known Activations