How mature is each company’s AI governance? We score it from primary evidence (regulatory filings, job postings, and governance disclosures), never from press releases.
The Governance Score is the evidence ladder: the mean of P(>=L0)...P(>=L5) across 10 factors, with P(>=k) = 1 - 0.2^N for N distinct sources at >= k.
Rungs above a factor’s highest source are exactly 0; a lone top-rung source gets half credit.
Coverage (factors seen / 10) is shown on hover.
The floor tick marks the independently corroborated score — [floor, DA] is corroboration depth, not a confidence interval.
It is demonstrated governance — it correlates with disclosure, so a mature non-discloser scores low.
Cross-sector ranks are provisional (llm_inferred), pending the invariance + coverage checks; L5 (Ethical Vanguard *) is defined within a firm’s own sector.