Simon Willison • 7/15/2026

simonw/pedalican

The article describes the author's experience accidentally activating a 'pet' in Codex Desktop, a little animated robot reminiscent of Clippy. They then created their own custom pet—a pelican riding a bicycle named Pedalican—using GPT-5.6 Sol xhigh and gpt-image-2 to generate sprite assets. The process involved multiple rounds of image generation, resulting in a sprite sheet and animated GIFs. The author shares the open-source skills used (hatch-pet and imagegen) and provides a GitHub repo with all generated assets. This is a technical exploration of AI-driven sprite creation for desktop pets.

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#Openai #Codex Desktop #Gpt 56