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Mandelbrot explorer · gpt-5.1-codex-mini

Render the Mandelbrot set with a smooth color gradient on a full-screen canvas, with click-and-drag to pan and mouse-wheel to zoom.

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user

Render the Mandelbrot set with a smooth color gradient on a full-screen canvas, with click-and-drag to pan and mouse-wheel to zoom.

assistant
thinking
**Creating an HTML file**

I need to create a single index.html file. First, I'll inspect the repository to see its structure and understand what elements I need to include in this file. I wonder if there are existing templates I could use or if I should start from scratch. It might be helpful to check the styles and scripts that are already in place so that everything meshes well. Let’s get this started!
bash {"command":"pwd"}
toolResult

/tmp/ws

assistant
thinking
**Planning index.html setup**

I’m considering building an index.html file that includes a full-screen canvas for displaying the Mandelbrot set with a smooth gradient. I also want to incorporate functionality for click-and-drag panning and mouse wheel zooming. It sounds interesting, but I need to make sure to inspect the repository to see how existing code can help with this. I think laying out these features will create an engaging visualization!
bash {"command":"ls"}
toolResult

(no output)

assistant
write index.html (4633 bytes)
toolResult

Successfully wrote 4633 bytes to index.html

assistant

Created `index.html` containing a full-screen Mandelbrot viewer with smooth gradients, click-drag panning, and mouse-wheel zoom.

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-5.1-codex-mini
vendorOpenAI
harnesspi-agent
generated2026-08-01

EVALUATION

3/5 working

Mandelbrot set renders with red/black coloring; drag pans and wheel zooms correctly, but color gradient is flat/uninteresting.

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 drag21.6%
on wheel4.1%
on enter + space0.0%
on arrow keys0.0%
on w/a/s/d0.0%
frame spread27 / 255
console errors0
js errors none

METRICS

runtime20.7s
tokens in6.4k
tokens out2.3k
cached4.4k
cost / run$0.0052