The 2026 Stanford AI Index overview reports US private AI investment of $285.88 billion in 2025. Europe recorded $20.92 billion and China $12.41 billion over the same period.

Generative AI reached 53 percent adoption within three years of its introduction, a faster pace than the internet or personal computers reached at the same stage, according to the report's adoption chart.

Reported AI incidents hit a record 362 in 2025, after a sharp rise across the 2012 to 2025 period covered by the index.

Infrastructure data shows the United States with the most data centers of any country in 2025, followed by China, with Canada, Russia, Australia, Brazil and parts of Europe also showing relatively high counts. The report lists 2025 AI supercomputer counts by region: China 85, Europe and Central Asia 44, North America 41, East Asia and Pacific 27, Latin America and the Caribbean 8, and the Middle East and North Africa and South Asia 3 each.

On model quality, top U.S. models reached an Arena score of 1,503 against 1,464 for the top Chinese model. OSWorld agent accuracy rose to 66.3 percent in 2025, below the 72.35 percent human baseline.

The chart plots investment by region over time, with the U.S. line rising far above Europe and China in 2025.

Source: Stanford HAI AI Index - https://hai.stanford.edu/ai-index/2026-ai-index-report