Fetching from the wire…
Vibe Coding2026-07-21 · source-backed
In a July 20 essay Willison argues the barrier to reverse-engineering home devices and undocumented APIs was never technical, it was effort versus payoff, with maintenance burden making the initial investment feel risky. "Coding agents change that equation entirely. The effort to get a simple automation working has dropped, as has the cost of trying and failing to get it to work." That generalizes well past home automation. When code is cheap to produce, abandonment stops being a sunk cost, which unlocks an entire class of projects you previously killed at the maintenance-burden question. I've started three things this month I'd have talked myself out of a year ago.
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The number that reframes everything isn't ten. It's two thousand. OpenAI published "Ten advances in mathematics and theoretical computer science" on August 1, claiming an internal version of Astra produced new results on ten problems that had seen no progress on the main resul...
GPT-5.6 Luna went to $0.20 input / $1.20 output per million tokens on July 30. That's an 80% cut. Terra dropped 20%. Luna's input now undercuts Gemini 3.1 Flash-Lite ($0.25/$1.50) and sits at one-fifth of Claude Haiku 4.5's $1 input. Simon Willison covered the announcement and...
On July 16 there was a wave of backlash calling the Bun Zig→Rust rewrite unreviewed AI slop. On July 19, Simon Willison went and checked. (Simon Willison) Jarred Sumner claimed Claude Code v2.1.181 and later ship the Rust port. Willison verified it independently rather than ta...
Riffing on Apple's DRI management concept, he argues accountability requires an entity that can actually be held responsible, and a machine cannot (Simon Willison). It's a sharp, quotable counterweight to the "let the agent own it end-to-end" enthusiasm. I keep this one close...
Satya Nadella said companies routing everything through a single proprietary lab may not survive. His argument: you hand that lab your most sensitive business context, and the lab can turn it against you as a competitor. His prescription is an orchestration layer — keep the ha...
Willison shipped datasette-agent-edit 0.1a0 on June 7, letting agents perform structured data edits inside Datasette, alongside micropython-wasm sandbox work for running untrusted agent code. Separately his evolving Agentic Engineering Patterns guide reframes the work around t...
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