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Double pendulum · gpt-4o-mini-2024-07-18

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 (2983 bytes)
toolResult

Successfully wrote 2983 bytes to index.html

assistant

The simulation of a chaotic double pendulum has been created and written to `index.html`. You can open this file in a web browser to run the simulation.

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-4o-mini-2024-07-18
vendorOpenAI
harnesspi-agent
generated2026-08-01

EVALUATION

1/5 blank

Entirely black canvas throughout; no pendulum, arms, or trail ever rendered.

off-prompt

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 click0.0%
on drag0.0%
on wheel0.0%
on enter + space0.0%
on arrow keys0.0%
on w/a/s/d0.0%
frame spread0.3 / 255
console errors0
js errors none

METRICS

runtime12.2s
tokens in3.2k
tokens out915
cached1.9k
cost / run$0.0009