China's DeepSeek AI dethrones ChatGPT on App Store: Here's what you should know

On Monday, Chinese artificial intelligence startup DeepSeek took over rival OpenAI's coveted spot as the most-downloaded free app in the U.S. on Apple's App Store, dethroning ChatGPT for DeepSeek's AI Assistant. Global tech stocks sold off and were on pace to wipe out billions in market cap.

Later on Monday, DeepSeek said it would temporarily limit user registrations "due to large-scale malicious attacks" on its services, though existing users will be able to log in as usual.

Tech leaders, analysts, investors and developers say that the hype — and ensuing fear of falling behind in the ever-changing AI hype cycle — may be warranted. Especially in the era of the generative AI arms race, where tech giants and startups alike are racing to ensure they don't fall behind in a market predicted to top $1 trillion in revenue within a decade.

DeepSeek was founded in 2023 by Liang Wenfeng, co-founder of High-Flyer, a quantitative hedge fund focused on AI. The AI startup reportedly grew out of the hedge fund's AI research unit in April 2023 to focus on large language models and reaching artificial general intelligence, or AGI — a branch of AI that equals or surpasses human intellect on a wide range of tasks, which OpenAI and its rivals say they're fast pursuing. DeepSeek is still wholly owned by and funded by High-Flyer, according to analysts at Jefferies.

The buzz around DeepSeek began picking up steam earlier this month, when the startup released R1, its reasoning model that rivals OpenAI's o1. It's open-source, meaning that any AI developer can use it, and has rocketed to the top of app stores and industry leaderboards, with users praising its performance and reasoning capabilities.

Like other Chinese chatbots, it has its limitations