Post
Simon Willison
simonwillison.net
did:plc:kft6lu4trxowqmter2b6vg6z
Made myself a custom Codex pet today (you'll never guess what it was), and had some fun reverse-engineering how the feature works - it generates animated sprite sheets using gpt-image-2 https://simonwillison.net/2026/Jul/14/pedalican/
2026-07-14T22:54:06.981Z