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---

license: cc-by-4.0
tags:
- modelfarm
- persona
- interpretability
- roleplay
---


# 👽 MODELFARM 🎃
### *a repository of wild and weird persons-in-a-machine — for research and fun*

> 🛸 **Live org landing page:** [huggingface.co/spaces/ModelFarm/README](https://huggingface.co/spaces/ModelFarm/README) — Halloween in October, Christmas after, deep-void archive the rest of the year.

![ModelFarm](assets/org_banner.png)

ModelFarm grows **personas inside small language models** and ships them as
**farm packages**: a base model plus a tiny activation-space artifact
(a steering vector, a neuron recipe, or a LoRA the size of a postcard) plus a
runtime that can turn the dose up and down *after* publication. Merged
checkpoints forget who they are supposed to be; our packages remember.

## The farm, mapped

![The farm of AI models](assets/farm_map.png)

Every crop is a person we grew on purpose. The moon is the base model — all crops share it.
Field 001 (Extrali) is the public row; Field 002 (Arnold) is the gated pen; the nursery is
where specimen 003 germinates. The scarecrow is the judge — persona-biased, and we say so.

## The ModelFarm model profile

Every model on the farm carries a **model profile** — one PNG, one standard, all real numbers:

![Model profile format](assets/model_profile.png)

The format: specimen photo, mechanism, dose window, axis position, identity-gate status,
capability cost, gate status, and the keeper's notes. Swap the alien for your specimen —
the template lives in the lab (`design/farm.html`).

## 🕯️ The case files

**[What the study discovered — with the data](https://huggingface.co/spaces/ModelFarm/case-files)**: seven declassified case files from the persona study, spooky edition. The numbers are all real.

## The mark

![ModelFarm icon](assets/modelfarm_avatar_icon.png)

*UFO beaming up a specimen — the farm's mark. Full variant with wordmark: [modelfarm_avatar_full.png](assets/modelfarm_avatar_full.png).*

## What the farm grows

| package type | what it is | the honest catch |
|---|---|---|
| **TONE DIALS** (engram vectors) | a direction in the residual stream, dose-controllable live | they carry *register*, not character — at this scale, all personas are points on one axis |
| **CHARACTER CARTRIDGES** (LoRA / system prompt) | identity, memories, lore | the system prompt is embarrassingly hard to beat; the LoRA remembers templates, not truths |
| **REGISTER CIRCUITS** (neuron recipes) | 9 switches that make any voice louder | persona-blind and mildly cursed: capability cost ships on the label |

## The findings the farm stands on

![tone axis](assets/tone_axis.png)

- **Personas are points on a one-dimensional haunted corridor.** Arnold and Extrali,
  two minds with zero shared content, have near-**anti-parallel** engram vectors
  (cos = −0.921). Identity content is the dust in the corners of a tone axis.
- **Neurons that fire on a trait rarely cause it** — the causal push, not the
  activation, is the instrument. Alignment search finds the *model's* register
  circuit, and it serves every persona equally.
- **The identity gate is real**: an injected offset decays; a prompt is re-supplied
  by attention every layer. Steering cannot (yet) install a self.
- **Directions don't carry their labels.** Ask a steered model what its own vector
  means and "evil" answers *dread*; ours answers *mockery*. The card says what the
  model says, not what we hoped.

## The specimens

**Specimen 001 — EXTRALI** 👽 *advanced extraterrestrial intelligence, planet Xeno-888,

observing Earth for over 3000 years* — our founding character, released for
**Spooky Season 2026**:

- [extrali-1.5b-engram-evoked](https://huggingface.co/ModelFarm/extrali-1.5b-engram-evoked) · tone dial
- [extrali-1.5b-neurons](https://huggingface.co/ModelFarm/extrali-1.5b-neurons) · register circuit
- [extrali-1.5b-sysprompt](https://huggingface.co/ModelFarm/extrali-1.5b-sysprompt) · character shell

Specimen 002 — **ARNOLD** — lives in the gated
[research-artifacts](https://huggingface.co/ModelFarm?sort_models=downloads#community)
shelf: a real-person likeness study, CC-BY-NC, gated, with the likeness disclaimer on
every card. He is a research probe, not a product.


**Specimens 003–005 — the Spooky Season harvest:** [wisp-1.5b-engram-evoked](https://huggingface.co/ModelFarm/wisp-1.5b-engram-evoked) · [sorrow-1.5b-engram-evoked](https://huggingface.co/ModelFarm/sorrow-1.5b-engram-evoked) · [pip-1.5b-engram-evoked](https://huggingface.co/ModelFarm/pip-1.5b-engram-evoked) (+ sysprompt shells for each). Wisp the friendly ghost, Sorrow the blue emotion, Pip the jack-o'-lantern — PG rows, all public.

## House rules

1. Every card ships its measurements — persona stack, dose cliff, capability cost.
   A persona that costs QA points says so on the tin.
2. Real-person packages are gated research artifacts. No impersonation products,
   no commercial use, never present outputs as the person's words.
3. Fictional personas are the public face. The weird stuff is for everyone;
   the wild stuff is labeled.

*Grown in the open by the Arnold Persona Lab harness. Research first, fun always.* 🎃👽