Simon Willison’s Weblog

Knockbrex Castle. I’m off to a Scottish castle with 11 fellow geeks for /dev/fort—offline for six days, back next Saturday.

Posted 30th May 2009 at 10:51 am

Recent articles

OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI - 12th December 2025
GPT-5.2 - 11th December 2025
Useful patterns for building HTML tools - 10th December 2025

castle 1 devfort 5 holiday 2 knockbrex 1 offline 10 scotland 1 sedf 1

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe