I got Opus 4.6 to one shot it, took 5-ish mins. "Write me a python program that outputs an svg of a fleur-de-lis. Use freely available images to double check your work."

It basically just re-created the wikipedia article fleur-de-lis, which I'm not sure proves anything beyond "you have to know how to use LLMs"

Just for reference, Codex using GPT-5.4 and that exact prompt was a 4-shot that took ten minutes. The first result was a horrific caricature. After a slight rebuke ("That looks terrible. Read https://en.wikipedia.org/wiki/Fleur-de-lis for a better understanding of what it should look like."), it produced a very good result but it then took two more prompts about the right side of the image being clipped off before it got it right.

Same, I used Sonnet 4.6 with the prompt, "Write a simple program that displays a fleur-de-lis. Python is a good language for this." Took five or six minutes, but it wrong a nice Python TK app that did exactly what it was supposed to.