Simon Willison’s Weblog

Plot & Vega-Lite. Useful documentation comparing the brand new Observable Plot to Vega-Lite, complete with examples of how to achieve the same thing in both libraries.

Posted 4th May 2021 at 4:32 pm

Recent articles

GPT-5: Key characteristics, pricing and model card - 7th August 2025
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ChatGPT agent's user-agent - 4th August 2025

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