Meta's open-weight Muse Glimmer is exempt from AI Act technical documentation under Article 53(2). Two lawful thresholds later, no party is required to document the exact state deployed. SOURCE 0 seals it anyway.

Providers of general-purpose AI models with systemic risk must document adversarial testing and any involvement of independent external evaluators under Article 55 of the AI Act. Population-scale synthetic-persona simulation infrastructure is a plausible candidate for that role — external to the model provider, but not independent of itself when its own population and validation figures are self-reported. No such case has been identified; this article examines the structural gap that would arise if one did.

Forty-four questions professionals ask about proving AI Act compliance — risk management, logging, incident reporting, watermarking — each mapped to the SOURCE 0 term that answers it, and to the article of Regulation (EU) 2024/1689 it rests on.