Retrieving every time is wasteful and occasionally harmful; retrieving never leads to hallucination. Self-RAG turns retrieval into a decision the model controls, then critiques what came back. The signal is the retrieve-on-demand plus self-critique loop.
Updated Sep 2026 · Grounded in real GenAI, LLM, and AI/ML engineering interview loops and written to a senior-engineer editorial bar.
Retrieving every time is wasteful and occasionally harmful; retrieving never leads to hallucination. Self-RAG turns retrieval into a decision the model controls, then critiques what came back. The signal is the retrieve-on-demand plus self-critique loop.
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