Simon Willison’s Weblog

objc_msgSend. Crazy hardcore optimization story.

Posted 2nd August 2005 at 11:09 am

Recent articles

Trying out the new Gemini 2.5 model family - 17th June 2025
The lethal trifecta for AI agents: private data, untrusted content, and external communication - 16th June 2025
An Introduction to Google’s Approach to AI Agent Security - 15th June 2025

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