I ran their "Write a POV-Ray file that shows a pelican riding on a bicycle" prompt against the new gpt-5-codex-mini and got the worst result yet! https://simonwillison.net/2025/Nov/9/pelican-on-a-bike-raytracer-edition/
@simon “In this work, the A.I.tist explores fundamental absurdity upon infinite, grounded womanhood. The deconstruction of both the pelican itself and the bicycle frame it sits upon reflect the fragmented nature of life, and they in turn are upon wheels that cleverly combine an infinity symbol and a vagina mired waist-deep in the earth itself.”