EU rules on AI models become enforceable. What's going to change?

The EU's AI Act rules on large language models became enforceable on August 1, 2026, establishing the European Commission as the world's leading AI regulator. The landmark legislation requires transparency in model development, disclosure of copyrighted training data, and compels developers of powerful "frontier" models to identify and mitigate societal risks. The EU faces significant enforcement challenges due to limited resources and competition with the private sector for AI talent, but has established the European AI Office and enlisted external scientific expertise to oversee compliance.