RAG vs fine-tuning vs agentic search, and when to use each

Choose between RAG and fine-tuning by the failure you can see. Use retrieval when the model is missing a fact, and fine-tuning when the facts are right and a specialist says the output reads wrong. Use agentic search, also called agentic RAG, only when no single query can find the answer. Prompting…

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1. 2026-10-31 18:40 · DEV Community — Machine Learning
   RAG vs fine-tuning vs agentic search, and when to use each