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Deep dives

Deep dives on working with AI

The longer argument: why a workflow is shaped the way it is, where a cost curve breaks, what a pricing change actually signals. One piece at a time, written to be disagreed with.

1 pagesLast updated 2026-10-23

Opus 5.5 Is Not 40% Cheaper Everywhere. Here Is Where the Number Holds.

Anthropic's headline for Claude Opus 5.5 is simple: 40% cheaper, 30% faster than Opus 5. Those two numbers are doing most of the work in every comparison article published since September.

    How this section works

    Deep dives are where the arguments live that do not fit inside an entry or a tutorial: why a workflow is structured a particular way, where a cost curve breaks, what a pricing change really signals. They are written to be read once, argued with, and returned to.

    Each one links back to the permanent pages it depends on, so the reference material stays current even when the argument ages. If a conclusion stops holding — a price moves, a tool changes its licence — the piece is annotated rather than rewritten, because the reasoning is usually still worth reading even when its premise has moved. Pieces appear when there is an argument worth making rather than on a fixed schedule, so the archive is short and the gaps between entries can be long.