DeepSeek is a new artificial intelligence chatbot that’s sending shock waves through Wall Street, Silicon Valley and Washington. The app, named after the Chinese start-up that built it, rocketed to the top of Apple’s App Store in the United States over the weekend.

DeepSeek says its newest AI model is as good as those of its American rivals, was cheaper to build and it’s available for free. What does that mean for US AI supremacy?

A small lab in China has shaken Silicon Valley. The sudden appearance of an advanced AI assistant from DeepSeek, a previously little-known company in the Chinese city of Hangzhou, has sparked discussion and debate within the U.