Hybrid retrieval Reciprocal rank fusion Offline evals

RAG that can say I do not know

Ask this corpus something it covers and you get an answer with citations and scores. Ask it something it does not cover and it abstains instead of inventing one. That second behaviour is the whole point.

Ask the corpus

The last question is deliberately outside the corpus. Try it and watch the answer refuse.

Or write your own

What it is allowed to read

Three short handbooks, seeded on every instance so the demo stays deterministic.