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What Is RAG, and When Do You Actually Need It Instead of Fine-Tuning?

This story is from 2026-10-22. It is preserved in the archive; the latest stories are on the live feed.

You've decided to put a large language model to work on your own data. Your first instinct is probably "let's fine-tune it on our documents." Hold on. That instinct is wrong most of the time, and acting on it will cost you six weeks and a five-figure training bill before you discover it didn't solv…

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  1. 2026-10-22 14:30 · DEV Community — Machine Learning
    What Is RAG, and When Do You Actually Need It Instead of Fine-Tuning?

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