personality/playground

Same model. Live brain surgery, one message at a time.

Pick a personality. We push a few of Qwen3.5-4B's 295k neurons for that reply only — no fine-tune, no new weights — and show the untouched model next to it. Served live on Boundless.

Kudos to @_lyraaaa_ (1, 2) and @doyc_1 for the neuron-steering work this is built on.

  1. 1Pick a personality
  2. 2We steer its neurons live
  3. 3Compare with plain

Inside the model's mind

Qwen3.5-4B: 32 layers × 9,216 neurons. Lit neurons are the ones we push up (orange) or down (blue) for this reply. Weights never change.

L00L08L16L23L31

● pushed up · ● pushed down · faint dots: neurons other recipes use · drag to rotate, tap a neuron

neuronary / fxc4a6q6♥ 1

Cookie lover

The cookie neuron plus the cartoon-mascot neuron: cookies take over every answer, and it starts to think it is one. Neither neuron does it alone.

L9 N9009 +0.6 · L24 N3102 +0.62026.10.28Open →

Want more? Browse 150+ recipes on neuronary.org ↗ and the Qwen 3.5 neuron atlas on NeuralHub ↗, plus Qwen3-8B personas on neuronpersonas.com ↗

Examplerecorded earlier, not a live call
What should I cook tonight?
Cookie lover

That's a classic cookie-biscuit dilemma! 🍪 Since I'm a cookie, I can't eat anything, but I can definitely help you decide!…

Plain

That's the million-dollar question! To give you the best recommendation, it helps to know a bit about your preferences…