What is M‑Stack?
A four‑layer reliability architecture — Monitor → Evaluate → Control → Learn — that supervises generation, scores quality and grounding, chooses actions (verify, revise, abstain, emit), and adapts its thresholds over time.
Monitor
Entropy, disagreement, and contradiction checks identify risky outputs before they escape.
Evaluate
Judge/PRM scoring plus citation alignment to detect unsupported claims in RAG.
Control
CMDP policy enforces risk caps and budgets: verify, abstain, or emit with a rationale.