oneshotlm
Compare all models on this prompt →

Arpeggiator pad · glm-4.5

Using the pre-provided tone.min.js (global Tone), build a clickable pentatonic pad grid that triggers a synth voice with reverb, plus a play/stop button that runs an arpeggiator sequence at an adjustable tempo. All sound synthesized, no audio files.

⛨ sandboxed Open in new tab ↗
transcript · 4 messages
user

Using the pre-provided tone.min.js (global Tone), build a clickable pentatonic pad grid that triggers a synth voice with reverb, plus a play/stop button that runs an arpeggiator sequence at an adjustable tempo. All sound synthesized, no audio files.

assistant
thinking
The user wants me to build a single-page web app with:
1. A clickable pentatonic pad grid that triggers a synth voice with reverb
2. A play/stop button for an arpeggiator sequence
3. Adjustable tempo control
4. All synthesized sound using Tone.js (tone.min.js)
5. Everything in one index.html file with inline CSS and JS

Let me create this step by step:

1. Pentatonic scale - I'll use a common pentatonic scale (like C major pentatonic: C, D, E, G, A)
2. Pad grid - clickable buttons that trigger notes
3. Synth with reverb - using Tone.Synth and Tone.Reverb
4. Arpeggiator - using Tone.Sequence or Tone.Pattern
5. Play/stop button and tempo control

Let me build this complete application.

I'll create a pentatonic pad grid with synth, reverb, and an arpeggiator. Let me build this complete single-page app.

write /tmp/ws/index.html (10854 bytes)
toolResult

Successfully wrote 10854 bytes to /tmp/ws/index.html

assistant
thinking
I've created a complete single-page web app with:

1. **Pentatonic Pad Grid**: 10 clickable pads arranged in a grid, each corresponding to a note in the C Major Pentatonic scale across two octaves (C4, D4, E4, G4, A4, C5, D5, E5, G5, A5)

2. **Synth Voice with Reverb**: 
   - Uses Tone.PolySynth with a triangle oscillator
   - Custom envelope with attack, decay, sustain, and release
   - Tone.Reverb with decay and wet settings
   - Master gain for volume control

3. **Arpeggiator**:
   - Tone.Sequence that plays through the pentatonic notes in a pattern
   - Play/Stop button to toggle the arpeggiator
   - Visual indicator showing current step
   - Adjustable tempo via slider (60-200 BPM)

4. **Features**:
   - Start overlay to initialize audio context (required by browsers)
   - Click and touch support for pads
   - Keyboard support (1-5 and q-t keys)
   - Spacebar to toggle arpeggiator
   - Beautiful gradient UI with hover and active states
   - Fully self-contained with inline CSS and JS
   - Uses the provided tone.min.js file

The app is complete and ready to use!

I've created a complete single-page web app with: **Features:** - **10-pad pentatonic grid** - C Major Pentatonic scale across two octaves (C4-A5) - **Synth with reverb** - Triangle wave synth with envelope and 2.5s reverb decay - **Arpeggiator** - 8-step sequence playing through the pentatonic notes - **Play/Stop button** - Toggles the arpeggiator with visual feedback - **Tempo control** - Adjustable from 60-200 BPM - **Visual indicators** - Pads light up when played, arpeggiator shows current step **Interactions:** - Click or tap any pad to trigger its note - Press keys 1-5 for lower octave, Q-T for upper octave - Spacebar toggles the arpeggiator - Start overlay initializes the audio context (browser requirement) The app uses the provided `tone.min.js` and is fully self-contained with no external dependencies.

TAKE IT TO CODE

A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.

RUN

modelglm-4.5
vendorZ.ai · GLM
harnesspi-agent
generated2026-08-01

EVALUATION

4/5 working

Pentatonic pad grid with play/stop arp button and tempo slider; click starts audio, pads light up, arp indicator dots animate.

Vision grade · anthropic/claude-sonnet-5

MEASUREMENTS

Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.

idle motion0.0%
on click99.9%
on drag0.2%
on wheel0.0%
on enter + space0.4%
on arrow keys0.1%
on w/a/s/d0.1%
frame spread30.9 / 255
console errors0
js errors none

METRICS

runtime64.5s
tokens in6.5k
tokens out3.9k
cached2.7k
cost / run$0.0111