The emergence of Chinese artificial-intelligence company DeepSeek raises a simple question that has clobbered energy stocks tied to the AI boom: What if AI can run sophisticated models without using so much energy?

Chinese artificial intelligence startup DeepSeek rattled the U.S. technology sector after the company recently unveiled an AI model that is competitive with leading U.S. models b

In a matter of days, DeepSeek proved to be so popular as to climb to the top of Apple's App Store, surpassing OpenAI's ChatGPT as the most downloaded app. But for owners of Nvidia stock, and stock traders in general, DeepSeek is on track of becoming a black swan — an unexpected event with extreme consequences.

Chinese startup DeepSeek has debuted an AI app that challenges OpenAI's ChatGPT and other U.S. rivals, sending a shock through Wall Street.

A frenzy over an artificial intelligence chatbot made by Chinese tech startup DeepSeek was upending stock markets Monday and fueling debates over the economic and geopolitical competition between the U.