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.

A new Chinese AI model, created by the Hangzhou-based startup DeepSeek, has stunned the American AI industry by outperforming some of OpenAI’s leading models, displacing ChatGPT at the top of the iOS app store,

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.