Fine-tuning, RAG or training your own model?
RAG gives the model current knowledge at every question, fine-tuning teaches behaviour through examples, and a small model is enough for choosing a category. First note the mistake: outdated terms are a source problem, the wrong department a behaviour problem. In a scenario of 1,000 tickets a month, RAG with the current terms cuts errors from 15% to 7%, and fine-tuning to 3%, which together save 12 hours of corrections, or €419 a month.