Boids flocking · gpt-5.1-codex-mini

Output generated Cost / run $0.0053 Runtime 22.1s

Prompt for this run

Create a full-screen flocking simulation of boids using separation, alignment, and cohesion, drawn as oriented triangles that steer smoothly and flee from the mouse cursor.

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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

METRICS

runtime22.1s

tokens in5.6k

tokens out2.3k

cached3.2k

cost / run$0.0053

Transcript · 6 messages

user

Create a full-screen flocking simulation of boids using separation, alignment, and cohesion, drawn as oriented triangles that steer smoothly and flee from the mouse cursor.

assistant

thinking

**Planning a single-page site**

I'm thinking about creating a single-page website, and the first step is to write an `index.html` file. I need to inspect the filesystem to ensure I’m following the right structure. It’s exciting to set everything up properly from the beginning! I want to make sure I include all necessary components so the page runs smoothly. Let's dive into crafting that page!

→ bash {"command":"ls"}

toolResult

(no output)

assistant

thinking

**Creating an index.html file**

I need to create a complete solution in a single index.html file. I'll edit or write a new file using the necessary code. It has to include CSS and JavaScript, all within the same document. I want a full-screen canvas for simulating boids that will respond to mouse movement, showing behaviors like separation, alignment, and cohesion. I'll make sure that everything is self-contained without external resources. Let’s go ahead and start creating this file!

→ write index.html (7055 bytes)

toolResult

Successfully wrote 7055 bytes to index.html

assistant

Created `index.html` with a full-screen boid flocking simulation featuring separation, alignment, cohesion, and mouse-flee behavior.