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Double pendulum · gpt-3.5-turbo

Simulate a chaotic double pendulum on a canvas using the correct equations of motion, drawing the arms and a colorful fading trail of the tip.

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transcript · 4 messages
user

Simulate a chaotic double pendulum on a canvas using the correct equations of motion, drawing the arms and a colorful fading trail of the tip.

assistant
write index.html (3012 bytes)
toolResult

Successfully wrote 3012 bytes to index.html

assistant

The chaotic double pendulum simulation has been created and saved in the `index.html` file. You can view the simulation by opening the file in a web browser.

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

modelgpt-3.5-turbo
vendorOpenAI
harnesspi-agent
generated2026-08-01

EVALUATION

1/5 broken

Nearly blank canvas showing only a tiny pendulum blip or dot, no visible arms or trail, not interactive.

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 motion0.1%
on click0.0%
on drag0.0%
on wheel0.0%
on enter + space0.0%
on arrow keys0.0%
on w/a/s/d0.0%
frame spread3.5 / 255
console errors0
js errors none

METRICS

runtime9.6s
tokens in3.4k
tokens out1.1k
cached0
cost / run$0.0033