Simon Willison’s Weblog

XULRunner 1.8.0.1 Release Notes (via) First stable developer release—create cross-platform apps with XUL.

Posted 6th February 2006 at 12:38 am

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GPT-5: Key characteristics, pricing and model card - 7th August 2025
OpenAI's new open weight (Apache 2) models are really good - 5th August 2025
ChatGPT agent's user-agent - 4th August 2025

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