AI regulation timeline: EU, US, UK, Korea 2024-08 EU AI Act in force Regulation 2024/1689 2025-02 prohibited practices apply 2025-08 GPAI obligations apply 2026-01 Korea Framework Act effective 2026-08 EU AI Act full applicability Article 50 transparency penalties up to 15M EUR / 3% 2025 rebrands UK AISI -> AI Security Institute (Feb 2025): narrower frontier-security focus, drops bias / free-speech framing. US AISI -> CAISI (Jun 2025): Center for AI Standards and Innovation; pro-growth posture; NIST host.