Simon Willison • 7/15/2026

simonw/pedalican

This article describes how the author accidentally discovered Codex Desktop's pet feature and created a custom animated pet named Pedalican—a pelican riding a bicycle. Using GPT-5.6 Sol xhigh and gpt-image-2, they generated sprite assets, animation loops, and documented the entire process in a GitHub repo. The post explores the open-source implementation details, including the hatch-pet and imagegen skills, and highlights the use of AI for generating game-ready sprites. It is a tech-focused tutorial on AI-assisted sprite creation and customization within a developer tool.

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#Openai #Codex #Gpt Image 2