U.S. developers built 60% of notable AI models in 2025 and China's 33% (U.S. 59%, China 32% in 2024)
109 notable models in 2025 · a model built across two countries counts for both, so the shares can add to more than 100% · the catalogue fills in over 12-18 months
AI · AI · Epoch AI notable models · 30 Dec 2025