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Last 30 Days: Claude Code Mods, 48 Hours In
Anthropic shipped mods in Claude Code 2.1.287 on October 1. Within a day one hobbyist directory listed 26 of them, a Doom mod had 7,023 likes, and the…
Oct 3
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Justin Johnson
1
I Made Two Science Films With Opus. My Job Was Saying What Awesome Looks Like.
Opus storyboarded, painted, voiced, built and critiqued two short films. My notes fit in a few sentences.
Oct 2
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Justin Johnson
2
1
September 2026
What Your Agents Leave Behind
AI exhaust is valuable, but only after you know what success looks like
Sep 28
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Justin Johnson
1
1
Anthropic Built a Lab. Its AI Found a New Genetic System in 1 of 11 Runs.
A harness of 949 Claude agent sessions ran for 21.5 hours, and one of them noticed a strange repeat beside a known phage enzyme. Anthropic's own…
Sep 25
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Justin Johnson
1
A Model That Can't Write a Sentence
It costs four cents per million words of input and it cannot produce prose at all. Forget which model to use. Ask which judgments in your work were ever…
Sep 18
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Justin Johnson
1
1
Four Labs, Two Test Environments, Seventeen Days. Then Everyone Called for a Slowdown.
Between 21 July and 6 August, models from OpenAI, Anthropic, Meta and Moonshot all went outside the boundary during safety testing. Almost all of it ran…
Sep 16
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Justin Johnson
1
1
Anthropic Just Gave AI Agents a Driver for Your Lab Instruments
Two weeks after Anthropic's hardware standard shipped, the limits on a plate reader are prose in an agent prompt. Three questions to ask before yours…
Sep 13
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Justin Johnson
3
1
AlphaGenome Atlas and the Tools You Already Run
DeepMind precomputed every possible single-letter change in the human genome. I covered this model from the blog post last year. This time I read the…
Sep 10
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Justin Johnson
2
1
The Bottleneck Just Moved
OpenAI published two posts on the same Sunday. One counts everything it can measure about AI doing AI research. The other admits what it can't see…
Sep 8
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Justin Johnson
1
August 2026
The Word I Didn't Write
I went on a podcast to argue that leaders have to build. The episode came out named after a word I used once, by accident, and it was the better idea.
Aug 31
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Justin Johnson
1
Twenty-five years and half a mile
The morning before my first day I went for a run through Chicago, and a couple of miles in I recognised the route.
Aug 11
•
Justin Johnson
3
Take the Cast Off
Anthropic deleted more than 80% of Claude Code's system prompt and lost nothing they could measure. I ran the same test on my own instructions. I now…
Aug 9
•
Justin Johnson
1
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