Why Does RAG Hallucinate When the Right Documents Exist?
This story is from 2026-10-21. It is preserved in the archive; the latest stories are on the live feed.
You check the logs. The right document was retrieved. It's sitting in the prompt, rank 2 of 5. And the model still gives a confidently wrong answer. This is the most frustrating RAG bug, because every dashboard says "retrieval worked." The usual advice (improve your embeddings, tune your chunking)…
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- 2026-10-21 07:59 · DEV Community — AI
Why Does RAG Hallucinate When the Right Documents Exist?