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.

Chinese AI lab DeepSeek sent a shockwave through the tech sector this week after releasing its R1 large language model (LLM) that was faster, more efficient, and cheaper to train and run than existing models,

Here’s what you need to know about DeepSeek, the Chinese AI startup that rattled markets as its app dethroned OpenAI's as the most-downloaded free app in the U.S. on Apple.