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The Stanford Institute for Human-Centered AI released its 2026 AI Index in April — over 400 pages tracking technical performance, investment, adoption, regulation, and societal impact across dozens of countries. It is the most comprehensive public accounting of AI’s trajectory available, and it paints a picture of an industry moving faster than the systems designed to measure and manage it.
Global corporate AI investment reached $581.7 billion in 2025, more than double the prior year. SWE-bench Verified coding performance jumped from 60% to nearly 100% of human baseline in a single year. Generative AI reached 53% population adoption within three years of mass-market launch — faster than the personal computer or the internet. The US-China model performance gap has narrowed to just 2.7%. Employment for software developers ages 22 to 25 has fallen nearly 20%. Model transparency scores dropped 31% in a single year. And training emissions for one frontier model reached 72,816 tons of CO₂ equivalent.