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After fine-tuning an LLM on company data, do you still need RAG? How would you verify?

Decide whether retrieval can be removed after fine-tuning. Test changed facts, source support, access boundaries, and the cost of keeping answers current.

Updated Oct 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.

Decide whether retrieval can be removed after fine-tuning. Test changed facts, source support, access boundaries, and the cost of keeping answers current.

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