I replaced Python's built-in functions with semantic operators. (1/)

Coding agents follow "it's always your fault" a bit too well.

When they hit a compiler bug, they'll rearrange methods, tweak syntax, and go in circles rather than consider the tooling might be wrong.

Had to manually identify and minimize this mypy bug after Claude Code couldn't.

Missing Semester has grown past 100K subscribers on YouTube. Appreciate all the engagement and support!

We plan to teach another iteration of the course in January 2026, revising the curriculum and covering new topics like AI IDEs and vibe coding.

My favorite way to measure progress in AI: finding papers obsoleted by ChatGPT prompts

Ever get blinded when writing code late at night and you alt-tab from your dark-mode terminal to your browser? Made this little macOS utility to solve this little problem, just updated for the latest macOS.

No thanks to AI for hallucinating BrightnessKit.framework.

We reproduced (and fixed!) Cursor’s rogue customer support AI. (1/5)

Coincidence, or genius growth hack? Cursor self-propagating through developer set-up instructions.

Is AI any good at evaluating AI? Is it turtles all the way down? We benchmarked evaluation models like LLM-as-a-judge, HHEM, Prometheus across 6 RAG applications. 1/2

And some repos are even organically suggested by ChatGPT. (3/3)

Some of this might be through web search / tool use, but for at least some, knowledge about the projects is actually part of LLM model weights. (2/3)

A substantial portion of traffic for some of my open-source projects comes from ChatGPT these days. Sometimes even a majority, beating traffic from Google. Time to prioritize LLM optimization over search engine optimization. (1/3)