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.S. and China in developing AI technology.

LinkedIn founder Reid Hoffman has been immersed in Silicon Valley since his August 1967 birth in Palo Alto, California, in the shadow of Stanford University, where he and fellow technology luminary Peter Thiel became friends as college students during the 1980s.

Hours after returning to the White House, President Donald Trump made a symbolic mark on the future of artificial intelligence by repealing former President Joe Biden’s guardrails for the fast-developing technology.

In a string of visits, dinners, calls, monetary pledges and social media overtures, big tech chiefs have joined a parade of business and world leaders in trying to improve their standing with President-elect Donald Trump before he takes office in January.

Being a venture capitalist carries a lot of prestige in Silicon Valley.

A Silicon Valley-backed initiative to build a green city for up to 400,000 people in the San Francisco Bay Area has qualified for the Nov. 5 ballot.

Silicon Valley investors behind a secretive $800 million land-buying spree got off to a rocky start with the voters they need to build a green new city in Northern California.

Tesla CEO Elon Musk has subpoenaed his friend and former Twitter CEO Jack Dorsey as part of an effort to back out of his $44 billion agreement to acquire the company Dorsey helped found.

Elon Musk’s wealthy high tech allies don’t seem too happy about receiving subpoenas from Twitter as part of the company’s legal battle with the Tesla CEO.

The icon for the social media app Clubhouse is seen on a smartphone screen in Beijing, Tuesday, Feb. 9, 2021. You can also download the app and get on a waiting list to be let into Clubhouse. Although Clubhouse hasn't divulged how many people are using its service, its app has been downloaded 5.3 million times, according to analytics firm App Annie. Thousands of Chinese users have flocked to the app in recent months, lured by the unfettered discussions it allowed with people abroad — particularly about democracy, Taiwan and other sensitive topics. Users still could download it if they had access to an Apple app store abroad.