New super-fast model from OpenAI today powered by their new Cerebras partnership - GPT-5.3-Codex-Spark
It's 4-5x faster than GPT-5.3-Codex but the pelican isn't as good!
Here's its pelican compared to full GPT-5.3 Codex, both on "medium" https://simonwillison.net/2026/Feb/12/codex-spark/
@simon gpt-oss-spark eta wen
@simon I have yet to find a model that makes good sounds.
Bird chirps and whistles are excellent, but try a gunshot or an engine and you'll be disappointed.
@simon I find it curious that these SVG pelicans are all quite similar to each other. Even across models. They all appear to trend towards the same style, the same background, the same 2D direction.
