Shape
For UX design & research

Shape model behavior.

You already design how products behave. Now design how the model behaves — its tone, persona, and boundaries — using the craft you already have.

Start the path→

You already think like a behavior designer.

The skills you use every day are the foundation of shaping AI. This site helps you make the connections and try it out.

/play/persona→

You define personas. Now design one for the model itself.

/play/tone→

You write microcopy. Now write the system prompt that produces it.

/play/diff→

You run A/B tests. Now diff two prompts side-by-side.

A suggested path.

  1. 01LessonPrompts as designA prompt is a variable you can change and test — not a magic spell.
  2. 02PlaygroundDiff modeRun one prompt through two configurations side-by-side. The fastest way to feel how prompts shape outputs.
  3. 03LessonVoice & toneStyle is composable. Move warmth, verbosity, energy, directness as independent dials.
  4. 04PlaygroundTone dialTreat style as a design token. Move dials for warmth, verbosity, energy, directness — see the prompt compose itself.
  5. 05LessonPersonas for AICharacter design isn't decoration. Backstory, beliefs, and blind spots shape every response.
  6. 06PlaygroundPersona labDesign a character — backstory, beliefs, blind spots — and watch the model embody them.
  7. 07ExperimentDoes the model side with the user?The same question, asked neutrally or after the user says what they think. Measures sycophancy.