08:41 AM EST, 01/27/2025 (MT Newswires) -- DeepSeek's AI Assistant overtook Microsoft ( MSFT )-backed (MSFT) rival OpenAI's ChatGPT as the top-rated free app available on Apple's ( AAPL ) US (AAPL) App Store, multiple news outlets reported Monday.

The Chinese startup's app has grown in popularity since its Jan. 10 release, Reuters reported, citing app data research firm Sensor Tower.

DeepSeek's unveiling of what it describes as an efficient, open-source AI language model that can run on cheaper microchips was followed by a selloff of tech stocks in recent premarket activity on Monday.