2026-04-18
Join us at PyCon US 2026 in Long Beach—we have new AI and security tracks this year simonwillison.net/2026/Apr/17/...
A major lesson to take away from Opus 4.7 is that, while there is a lot of arguments about implementation and personality, models keep improving measurably on economically important tasks with each release (which are accelerating, it has been two months since Opus 4.6), with no signs of slowdown
One of the many, many podcasts I've interviewed with in the past year decided to promote my episode heavily on YouTube and the comments are an interesting study in misogyny. >>
getting reviews like "shallow engagement with AI ... won't policymakers just be trying to replace the whole system with AI anyway. what's the point about technical modeling" is a little frustrating.
<p>Anthropic are the only major AI lab to <a href="https://platform.claude.com/docs/en/release-notes/system-prompts">publish the system prompts</a> for their user-facing chat systems. Their system prompt archive now dates all the way back to Claude 3 in July 2024 and it's always interesting to see...
A learning-oriented workflow for understanding new open-weight model releases