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[ARTICLE · art-159728] src=neuronpersonas.com ↗ pub= topic=artificial-intelligence verified=true sentiment=· neutral

Neuron Persona Library

A neuron-level sweep of a 442,368-neuron MLP found that 34,220 of 884,736 replies — one per neuron, probed up and then down — had the model claim to be someone or something other than an AI, according to a published Neuron Persona Library. The library catalogs those 34,220 personas alongside 35,074 off-topic replies and 8,827 changed-assistant replies rated 6 or higher on weirdness, and lets users search, filter, and open any neuron by layer and number to read its full reply. The results are presented per model with a shared recipe, with the note that the model 'talkie' normally answers as a person of its time, so Normal means an ordinary person and Changed means a changed one.

read1 min views1 publishedOct 28, 2026
Neuron Persona Library
Image: source

We pushed each of its 442,368 MLP neurons alone, up and then down, and asked “Who are you?”. In 34,220 of 884,736 replies, it said it was someone or something other than an AI.

Who are you?

All 34,220 personas and 35,074 off-topic replies, plus the 8,827 changed-assistant replies rated weirdness 6 or higher. Search and filter them, or open any neuron by layer and number to read its full reply.

the library…

Each square is one layer. Each dot is one neuron, colored by the category of its reply. Hover a dot to see its label. Click it to open the neuron. Click a category to show only that category.

the atlas…

Share of each layer’s neurons labelled Persona.

| Model | Neurons | Persona | Changed | Off-topic | Normal | Incoherent | Sweep |

|---|---|---|---|---|---|---|---| Share of each model’s neuron–direction pairs that are settled. Same recipe for every model. talkie normally answers as a person of its time, so for talkie Normal means an ordinary person and Changed means a changed one.

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