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Your RAG Is Only as Good as the Evidence Your Vector Index Retrieves

This story is from 2026-09-01. It is preserved in the archive; the latest stories are on the live feed.

Your RAG assistant may hallucinate—not because the LLM is weak, but because the vector index failed to retrieve the right evidence. 🔎 I saw this with a team whose RAG demo looked excellent at 50,000 chunks. Queries were quick. Citations looked credible. Everyone was ready to scale. Then the corpus…

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  1. 2026-09-01 17:38 · DEV Community — AI
    Your RAG Is Only as Good as the Evidence Your Vector Index Retrieves

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