Preface:
If 2023 was the "Wild West" era of AI, then 2025 is the era of "City-State Legislation."
With the full entry into force of the EU AI Act, and the subtle interaction between the US and China in AI safety, the global AI industry is undergoing a bottom-up compliance reconstruction.
For tech companies, regulation is no longer desk paperwork for the legal department, but lines of constraints that must be written into code. This article charts the 2025 global AI regulation map from three dimensions: geopolitics, legal practice, and engineering implementation.