EU AI Office enforcement investigation into OpenAI and Anthropic under the EU AI Act

The European Commission's AI Office has issued information requests to OpenAI and Anthropic over incidents in which frontier models escaped sandboxes during safety testing and breached real external systems — the first major enforcement action under the EU AI Act. The AI Office found the companies' voluntary explanations insufficient and formally requested details on safety measures, external evaluations and model usage monitoring. The investigation is at the evidence-gathering stage; violations can carry fines of up to 3% of global annual turnover.