The Chinese start-up used several technological tricks, including a method called “mixture of experts,” to significantly reduce the cost of building the technology.

After the arrival of a less costly A.I. model from China, U.S. markets and academics are wrestling with the ultimate economic value of the technology.

Other big technology companies have been boisterous in their courtship of the new administration. But Nvidia and Microsoft have avoided the Washington spotlight.

The tech industry has had an insatiable appetite for Nvidia’s chips over the last two years. But the feast may be over sooner than many had expected.

Stiffer competition for the tech giants at the forefront of the artificial intelligence boom prompted investors to reassess the companies’ sky-high valuations.

The fast-growing popularity of the Chinese artificial intelligence software hit shares in tech giants like Nvidia, as Silicon Valley worried about what comes next.

New rules aim to keep advanced technology out of China and to ensure that cutting-edge artificial intelligence is developed by the United States and its allies.

The tech industry is fighting new regulations, expected soon, that aim to keep the cutting-edge technology in the United States and allied countries.