Simon Willison’s Weblog

System Administrator Appreciation Day. The last Friday in July is Annual System Administrator Appreciation day. Thank (or hug) your sysadmin today!

Posted 27th July 2007 at 7:21 pm

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

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