Simon Willison’s Weblog

Dynamic Java. What happens when leaders from Java, Python, Perl, Parrot, Jython and Groovy get together in one room.

Posted 9th December 2004 at 12:12 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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