Simon Willison’s Weblog

Scripting Media Types (via) JavaScript finally has an official mime-type (or several)—application/javascript looks like the best bet.

Posted 6th July 2005 at 12:04 am

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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