Daily Read · 2026-03-19

Great news—we’ve hit our (very modest) performance goals for the CPython JIT over a year early for macOS AArch64, and a few months early for x86_64 Li

20. GPT-5.4 mini and GPT-5.4 nano, which can describe 76,000 photos for $52 · 5.0/10 · simonwillison

OpenAI today: Introducing GPT‑5.4 mini and nano . These models join GPT-5.4 which was released two weeks ago . OpenAI's self-reported benchmarks show

21. Use subagents and custom agents in Codex · 5.0/10 · simonwillison

Use subagents and custom agents in Codex Subagents were announced in general availability today for OpenAI Codex, after several weeks of preview behin

22. Coding agents for data analysis · 5.0/10 · simonwillison

Coding agents for data analysis Here's the handout I prepared for my NICAR 2026 workshop "Coding agents for data analysis" - a three hour session aime

23. How coding agents work · 5.0/10 · simonwillison

Agentic Engineering Patterns > As with any tool, understanding how coding agents work under the hood can help you make better decisions about how to a

24. Samsung Discontinues Its Galaxy Z TriFold After Just Three Months · 5.0/10 · daringfireball

Jess Weatherbed, The Verge: Samsung is preparing to axe its first three-panel foldable phone less than three months after launching the device in the

25. ‘The Last Quiet Thing’ · 5.0/10 · daringfireball

Another crackerjack essay on design and attention from Terry Godier. (Note that the Casio in the essay not only shows the actual time, but has functio

26. ★ Apple Exclaves and the Secure Design of the MacBook Neo’s On-Screen Camera Indicator · 5.0/10 · daringfireball

“What that means in practice is that even a kernel-level exploit would not be able to turn on the camera without the light appearing on screen.”

27. CHM Live: Apple at 50 · 5.0/10 · daringfireball

David Pogue absolutely killed it hosting this live event last week. Glad I saved it to watch on my TV. Special guests include Chris Espinosa, John Scu

28. iFixit’s MacBook Neo Teardown · 5.0/10 · daringfireball

iFixit: Is Apple’s most affordable laptop ever also one of its most repairable? For years, opening a MacBook has usually meant fighting your way throu

29. Shower Thought: Git Teleportation · 5.0/10 · idiallo

In many sci-fi shows, spaceships have a teleportation mechanism on board. They can teleport from inside their ship to somewhere on a planet. This way,

30. Pluralistic: William Gibson vs Margaret Thatcher (17 Mar 2026) · 5.0/10 · pluralistic

Today's links William Gibson vs Margaret Thatcher: The Street Finds Its Own Alternatives For Things. Hey look at this: Delights to delectate. Object p

31. F Cancer · 5.0/10 · garymarcus

The real test of AI

32. Powers don’t clear fractions · 5.0/10 · johndcook

If a number has a finite but nonzero fractional part, so do all its powers. I recently ran across a proof in [1] that is shorter than I expected. Theo

33. Tone row operations · 5.0/10 · johndcook

The previous post introduced the idea of a twelve-tone row, a permutation of the twelve pitch classes of a chromatic scale. The earlier post also intr

2026-03-18 22:31 UTC · Kimi K2 · 94 sources