Simon Willison’s Weblog

Twitter / MarsPhoenix. NASA’s Mars Phoenix lander, due to land on the planet today, has a Twitter account. Bio: “I dig Mars!”.

Posted 25th May 2008 at 7:41 pm

Recent articles

GPT-5: Key characteristics, pricing and model card - 7th August 2025
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ChatGPT agent's user-agent - 4th August 2025

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