Claude Haiku 5.5highin Claude CodeGalton board
Running live
OPEN FULL SCREEN ↗
Open it running ↗This is the exact file the model wrote, unedited, served from an isolated domain with the network blocked, as in the test.
What the robot did
The comparison clip (the same script for every model)
Checks
14/15Written from the prompt (test v1, checks v1). The model never saw them.
- ✓Opens without a page error
- ✓Test hooks present (getState, setGravity, pause, resume, reset)
- ✓Visible canvas, at least 800×6001920×1080
- ✓Animation is alive (frames keep changing)288 quadros em 3 s; imagem mudou
- ✓Smooth: median frame time under 25 msintervalo mediano 9.0 ms (~111 fps)
- ✓Starts by itself: balls fall and reach the binsdropped=449 inBins=192
- ✓At least 13 bins15 caixas
- ✓Counters add up (balls in bins ≤ balls dropped)soma=192 inBins=192 dropped=449
- ✗Bell-shaped histogram (half the balls in the middle third)terço central com 38% de 192 bolas
- ✓Pause freezes, resume continuespausado: 458→458; depois de retomar: 494
- ✓Changing gravity changes the scene900 → 720 (pedido 720.0)
- ✓Reset empties the binsdepois do reset: inBins=0 dropped=5
- ✓No uncaught exception during the session
- ✓No console errors
- ✓No network attempts
The record
DOWNLOAD JSON ↓- Model
- Claude Haiku 5.5
claude-haiku-5-5 - Reasoning effort
- high
- Started
- Oct 10, 00:30 UTC
- Harness
- Claude Code 2.1.296, by Anthropic (not ours) · one shot · tools used: 0
- Harness settings
- print mode, safe mode, every tool off (--tools ""), no saved session, empty folder outside Git ·
CLAUDE_CODE_MAX_OUTPUT_TOKENS=128000 - Tokens
- in 2 · cache read 3,007 · out 104,662 · reasoning 90,665 · requests 1
- Cost
- $0.052 API-equivalent · extra spend $0 (subscription)
- Test
- Galton board v1 · checks v1 · prompt
2e0eaba1ad6a - Output file
- 26.6 KB · sha256
efecda98946c - Run id
20261010T003053Z_galton-v1_haiku-high_r2