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My RAG evaluation was lying to me, twice!!

This story is from 2026-09-25. It is preserved in the archive; the latest stories are on the live feed.

I built the usual thing: a CLI that ingests documents, embeds them, and answers questions with citations. Bun, TypeScript, SQLite with sqlite-vec for the vector index, Voyage for embeddings, Claude for generation. About 700 lines. Nothing in that stack is interesting — it's a weekend's work and the…

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  1. 2026-09-25 21:47 · DEV Community — AI
    My RAG evaluation was lying to me, twice!!

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