What is a RAG MVP?
Short answer
A RAG MVP is one job — “ask my files” — with ingest, chunking, retrieval, citations, and auth so User A cannot retrieve User B’s documents.
Skip RAG if users will not upload documents or the answer is a 10-row FAQ. A prompt plus a database query is cheaper.
Do not fine-tune in v1. Retrieval quality beats a custom model for this job.