Decide
Which approach do you actually need?
Most AI projects go wrong at the first decision, not the last. These are short — three questions, an answer, and the reason behind it.
RAG or fine-tuning?
The most common architecture decision, and the one most often made backwards.
Answer a few questions →I want to build a chatbot
What you actually need — which is usually less than you think.
Answer a few questions →Should I run a model myself?
Self-hosting versus an API — and the arithmetic people skip.
Answer a few questions →Every recommendation links to the concepts behind it, so you can check the reasoning rather than take it on trust.