Portulans Institute波图兰研究所：2025年现有AI索引的最新技术水平报告（英文版）

Nowadays, a variety of indexes track national or regional AI progress, each with a different focus and audience. These indexes serve a range of purposes; they inform policymaking, highlight strengths and gaps in national AI ecosystems, and promote transparency and accountability in AI governance. Despite their varied origins, scopes, and methodologies, we found that most of these indexes can be broadly grouped into two main categories, based on their primary analytical focus. The first catego