The United States continues to dominate the global artificial intelligence (AI) ecosystem, but China is emerging as a formidable challenger through cost-efficient AI models that are increasingly attracting enterprise adoption, according to a report by financial services major J.P. Morgan. In its report, "Semiquincententacles: the US grip on global markets at 250", J.P. Morgan said the US retains a commanding lead in AI readiness, innovation, infrastructure and investment, although Chinese firms are making rapid gains in the commercial deployment of AI models."The US is the most vibrant and prepared country for AI, with China close behind on some measures," the…