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When would you use fine-tuning vs RAG vs prompt engineering? How do you decide?
ML Concept: 5-7 minutes to answer
llm-engineeringfine-tuningragpromptingmust-knowcategory:ai_llm_tools
Updated Jan 18, 2026
Question
Question
When would you use fine-tuning vs RAG vs prompt engineering? How do you decide?
Expected time to answer: 5-7 minutes
Difficulty: intermediate
Why This Is Asked: Tests ability to choose the right LLM customization strategy for different scenarios
Tags: llm-engineering fine-tuning rag prompting must-know
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