Long Context Didn't Kill RAG. It Killed Lazy RAG
This story is from 2026-09-09. It is preserved in the archive; the latest stories are on the live feed.
Short version: In a controlled comparison published in June 2026, long-context prompting beat semantic RAG on correctness — 73.1% against 65.4% — and cost 26 times as much per query to do it. That single row is the whole argument: long context is genuinely better at the thing people claim it's bett…
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- 2026-09-09 06:41 · DEV Community — AI
Long Context Didn't Kill RAG. It Killed Lazy RAG