2026 AI Index Report: AI capability is accelerating, not plateauing, the US-China model gap has closed, the US leads in data centers and AI investment, and more news hai.stanford.edu

Stanford HAI: 2026 AI Index Report: AI capability is accelerating, not plateauing, the US-China model gap has closed, the US leads in data centers and AI investment, and more  —  AI's influence on society has never been more pronounced.  —  At Stanford HAI, we believe AI is poised to be the most transformative technology of the 21st century.