NLP vs LLM vs RAG, Routed by Task Shape and Cost
NLP vs LLM vs RAG is a routing decision set by task shape. Compare the cost math, failure modes, and an LLM-fallback pattern before picking a model.
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Fine-Tuning vs RAG vs Prompt Engineering Decision Framework
Fine-tuning vs RAG vs prompt engineering: run this eval-gated framework before training a custom model and inheriting its hidden maintenance tax.