Claude Sonnet 5.5highin Claude CodeAquarium
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
15/15Written from the prompt (test v1, checks v1). The model never saw them.
- ✓Opens without a page error
- ✓Test hooks present (fish, food, tank)
- ✓Canvas fills the window (at least 1280×720)1920×1080
- ✓Animation is alive (frames keep changing)177 quadros em 3 s; imagem mudou
- ✓Smooth: median frame time under 25 msintervalo mediano 24.8 ms (~40 fps)
- ✓At least 6 fish of at least 2 species16 peixes, espécies ['angelfish', 'blue-tang', 'clownfish', 'goldfish', 'neon-tetra']
- ✓Fish swim (80% move 30 px in 2 s)16 de 16 percorreram 30 px ou mais em 2 s (ids estáveis: True)
- ✓Fish never leave the waternenhum fora da água
- ✓Clicking the water drops food where you clickedração a 0 px do clique em (384,142)
- ✓Food sinksdesceu 47 px em 1.4 s
- ✓Fish go to the food and eat it4 de 4 comidas por um peixe que chegou nelas em até 20 s
- ✓Fish that ate grew3 de 4 peixes que comeram cresceram
- ✓No uncaught exception during the session
- ✓No console errors
- ✓No network attempts
The record
DOWNLOAD JSON ↓- Model
- Claude Sonnet 5.5
claude-sonnet-5-5 - Reasoning effort
- high
- Started
- Oct 10, 01:29 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 1,454 · out 105,131 · reasoning 78,458 · requests 1
- Cost
- $1.06 API-equivalent · extra spend $0 (subscription)
- Test
- Aquarium v1 · checks v1 · prompt
1e1988206e10 - Output file
- 44.3 KB · sha256
3ff9a6c9f3ab - Run id
20261010T012906Z_aquario-v1_sonnet-high_r1