Simon Willison’s Weblog

Yahoo and Upcoming, Sitting In A Tree. This is really good news.

Posted 5th October 2005 at 11:14 am

Recent articles

Designing agentic loops - 30th September 2025
Claude Sonnet 4.5 is probably the "best coding model in the world" (at least for now) - 29th September 2025
I think "agent" may finally have a widely enough agreed upon definition to be useful jargon now - 18th September 2025

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