Tag #policy-hierarchy 1 post tagged policy-hierarchy. ← All topics deep-dive OpenAI's Under-18 Principles: a guardrail engineer reads the new Model Spec OpenAI's December Model Spec adds Root-level Under-18 Principles that bind the model even against jailbreak framing. The defense is real, the bypass surface is well-documented, and the deployment lessons cut across every team shipping age-gated AI. May 5, 2026