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.

The AI world is fretting about the emergence of a low-cost LLM developed by an obscure Chinese firm that may have copied OpenAI.

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.