Fine-tuning vs. RAG

AI 101: The 2026 Foundation — lesson 13 of 20 (DEFINITION)

Fine-tuning re-trains a model on your examples (changes how it behaves). RAG — retrieval-augmented generation — feeds a model your documents at question time (changes what it knows). Most businesses need RAG first; it’s cheaper and always current.

Source: AWS — What is RAG?

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