Posts from September 2026 [ on iamcal.com ]

Posts from September 2026

Sep 9th: Opusfived is infuriatingly well done. It's extremely familiar to anyone who's been using the Opus 5 model family. I hate it.

Sep 2nd: This color match game is pretty fun, though I'm fairly terrible at it. I love this trend for daily scored games.

This is the personal website of Cal Henderson, Slack co-founder & CTO.

I give occasional talks, write code and sometimes articles.

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