China overtakes US in top AI researchers, studies cite visa pushback and DeepSeek's homegrown talent

China gained 14 percentage points of the elite between 2022 and 2025 ^[13] and the US lost 12 ^[14]. Together the two held 73% of NeurIPS-defined top researchers in 2022 and 75% in 2025 ^[15]. Everyone else slipped from 27% to 25% ^[15]. A 19-point American lead turned into a 7-point Chinese one ^[16].

Shares that mirror each other this closely invite a migration story. Carnegie China, though, counted participation in NeurIPS ^[4], so the share shows where elite work comes from. It cannot separate a researcher who came home from an American lab from one who never left China.

Three readings fit the same shares. One is the visa channel the study names, with researchers pushed back to China after time overseas ^[6]. Another is the competitive pay at leading Chinese firms that the study also names ^[6]. The third is a domestic pipeline that involves no visa decision at all, and the 12-point rise in Chinese undergraduates staying home ^[17] belongs to it.

DeepSeek is the one lab where the sources count heads. Stanford's Hoover Institution and HAI found that 53.5% of authors affiliated with it had never worked or studied outside China ^[1]. That leaves 46.5% with some foreign experience ^[12], only part of it American, and the analysis does not say how large that part is. More than 70% of the US-experienced group came home ^[8]. On that author list, visa policy can account for some fraction of the 46.5% and none of the majority.

The counter-case sits in the same research. One-third of the core contributors to a model Crypto Briefing describes as rivaling OpenAI's came out of China's domestic education system ^[9]. Beside 53.5% for all authors ^[1], the inner team looks less homegrown than the full author list, though the two figures use different tests. If the people who built that model mostly trained abroad, the visa reading is strongest among the people who matter most to the lab's best work. I think the evidence supports visa rules as a real but partial cause of China's 14-point gain ^[13]. A Carnegie breakdown showing that most of the gain came from researchers with US experience would prove that view wrong.

China, for its part, is spending on one pool. Foreign hiring runs into a Chinese working language, the Washington-Beijing rivalry and anti-foreign sentiment fed partly by youth unemployment, according to Crypto Briefing ^[11]. DeepSeek's openness to foreigners comes with a Chinese-language condition ^[2]. Its plan to double department sizes therefore draws on Chinese speakers, whether they stayed home or are returning from abroad ^[2]. Against a shortfall the labor ministry puts above 5 million ^[10], the only recruiting tool the sources show Chinese labs using is pay ^[6][2].