For most of the past decade, the United States held a comfortable lead in artificial intelligence. That margin is now effectively gone. Stanford University's ninth annual AI Index, released April 13, found that Chinese AI models have traded places with American ones at the top of performance rankings multiple times since early 2025, with the current gap down to 2.7 percentage points — a spread that used to be measured in double digits.
The report documents a technology that is simultaneously accelerating and becoming harder to scrutinize. Generative AI reached 53 percent of the global population within three years — faster than the personal computer or the internet — and 88 percent of organizations now use it. Yet the most capable models are the least transparent: the Foundation Model Transparency Index dropped from 58 to 40 out of 100 in a single year, as leading companies stopped disclosing training data, compute costs, and dataset sizes. Meanwhile, young software developers aged 22 to 25 saw employment fall nearly 20 percent, and AI-related safety incidents rose 55 percent year over year.