DeepSeek challenges OpenAI with drastically cheaper models, prompting discussions on the viability of proprietary versus open-source AI efforts.

When Chinese quant hedge fund founder Liang Wenfeng went into AI research, he took 10,000 Nvidia chips and assembled a team of young, ambitious talent. Two years later, DeepSeek exploded on the scene.

A Chinese artificial-intelligence company has Silicon Valley raving, calling it "amazing and impressive,"despite working with less-advanced chips.