If I had to compress everything I have learned about building trustworthy AI into a single sentence, it would be this: decide, up front, which parts of the answer are computed and…
Almost every unreliable AI system I have seen makes the same mistake: it asks one tool to do two fundamentally different jobs. The first job is establishing facts.
So the architecture has exactly one non-negotiable rule. The deterministic layer produces every fact. The language model reads those facts and interprets them.
I built Eternal Evals on exactly this architecture, in a domain that punishes hallucination immediately: Vedic astrology.
The single design decision that separates honest AI from confident nonsense: let a deterministic system establish the facts, and let the language model only interpret them.