Simon Willison’s Weblog

Simple Update Protocol: Update. Already implemented by more than five services, each of which now have near-real-time updates in to the FriendFeed syndication engine.

Posted 18th December 2008 at 11:33 pm

Recent articles

The Summer of Johann: prompt injections as far as the eye can see - 15th August 2025
Open weight LLMs exhibit inconsistent performance across providers - 15th August 2025
LLM 0.27, the annotated release notes: GPT-5 and improved tool calling - 11th August 2025

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