Microseconds, Grids, and Sober AI Math

Hey 👋 — a small but tasty issue today: one deep technical dive that makes the impossible sound almost casual, a hypnotic little grid you'll want to click "randomize" on more than once, and a dose of AI market sobriety to keep expectations grounded.

JIT compiling code in 5μs

A database engineer walks through building a JIT compiler for pgrust that targets assembly directly, turning SQL queries into machine code in about five microseconds flat. What makes this one worth the read isn't just the speed — it's the admission that AI assistance is what made tackling a project this gnarly feel tractable in the first place, a nice bit of honesty about how the tooling is changing what solo hackers attempt. (via HN discussion)

Procedural grid art

A minimal generative piece called "2308" hands you a randomize button and a grid, then gets out of the way — the kind of one-idea, no-explanation-needed sketch that's dangerously easy to sit and click through a dozen times. (via HN discussion)

Anthropic's best AI model struggles to attract users as cheaper tools thrive

Simon Willison rounds up billing-data figures from Ramp showing that Anthropic's older Opus 4.8 is still eating more usage share than the newer, pricier Opus 5 — a useful reminder that "best" and "most used" are frequently different columns on the same spreadsheet.

Quick hits

• Show HN: Self-hosted social media agents with Raspberry Pi — because nothing says "healthy relationship with social media" like outsourcing it to a $35 board.
• Wild AI-related reliability incidents are coming — a bracing look at the outages we haven't had yet.

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