Previously little-known Chinese startup DeepSeek has dominated headlines and app charts in recent days thanks to its new AI chatbot, which sparked a global tech sell-off that wiped billions off Silicon Valley’s biggest companies and shattered assumptions of America’s dominance of the tech race.

The Chinese artificial intelligence firm DeepSeek has rattled markets with claims its latest AI model performs on a par with those of OpenAI, despite using less advanced, more energy efficient computer chips.

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.