DeepSeek, a Hangzhou-based startup founded in 2023, shot to the top of Apple’s App Store free app chart after releasing a new open-source AI model it says rivals OpenAI's work. Its website was hit by outages amid a spike in interest.

The little-known artificial intelligence firm has emphasized research, even as it emerged as the brainchild of a hedge fund.

DeepSeek is just one of an array of companies developing AI models and applications. Here’s a guide to a number of the biggest players in China.

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.

Entrepreneur Marc Andreessen, known for co-writing Mosaic, one of the world’s first web browsers, wrote Sunday on X that “DeepSeek R1 is AI’s Sputnik moment,” likening it to the space race between the U.S. and the Soviet Union and the event that forced the U.S. to realize that its technological abilities were not unassailable.

With a model that offers comparable performance at seemingly a fraction of the cost, the DeepSeek chatbot is causing a reckoning over American dominance in the tech industry. The U.S. has imposed sanctions on advanced chip sales to slow down progress in AI elsewhere.

Tongliang Liu, University of Sydney Chinese artificial intelligence (AI) company DeepSeek has sent shockwaves through the tech community, with the release of extremely efficient AI models that can compete with cutting-edge products from US companies such as OpenAI and Anthropic.