Simon Willison’s Weblog

24 ways: User Styling. The web geek advent calendar is up and running again this year, with a striking new design.

Posted 3rd December 2008 at 9:08 am

Recent articles

My Lethal Trifecta talk at the Bay Area AI Security Meetup - 9th August 2025
The surprise deprecation of GPT-4o for ChatGPT consumers - 8th August 2025
GPT-5: Key characteristics, pricing and model card - 7th August 2025

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