Similar is not the same — embeddings, Fellegi-Sunter, and what a machine has to know before it may merge two records. Plus where explicit vectors do belong: retrieval for agentic entity resolution.
The part intelligence doesn't make cheaper — reasoning is collapsing in price; knowing which real thing you mean is not. Why arche exists, and what it looks like built.
The same clinic, three spellings — how much of a national facility reconciliation is actually a hard problem, measured on public Nigerian data, with runnable notebooks.
Introducing arche — the practical introduction: install it, and see the four verbs on one worked example with real output.