There have been a few that get that right - most notable Qwen 3.8 27B running on my laptop: https://simonwillison.net/2026/Aug/16/qwen-38-27b/#the-defau...

Also the recent Geminis - https://simonwillison.net/2026/Oct/13/llm-gemini/ - and GPT-6 Astra on Max: https://static.simonwillison.net/static/2026/gpt-pelicans-gr... - and Claude Fable 5.1 https://static.simonwillison.net/static/2026/claude-pelicans...

GLM 5.3 not only got that part right, but animated it: https://crimson-jeri-74.tiiny.site/

To be fair I have a feeling that if you added 'animated' to the SVG request, the output quality from many other models would improve, just because of the extra chain-of-thought work needed to fulfill the more complex request. IMHO the animation requirement should be added to the canonical pelican prompt.