Trump said he and New York City mayor Mamdani disagree, but that Mamdani deserves respect.

Yan Wentao, a partner at Hillhouse Ventures, officially joined DeepSeek as CFO on Monday (Sept. 21) and has reported to the company, ending a three-year CFO vacancy since the start-up's founding. The hire circulated in the investment community last week; several young partners from leading VCs had competed for the role over the past two months.

US President Trump posted on social media saying warnings that AI will kill or attack people are alarmist and likened them to past climate alarmism. He declared Whoever wins AI wins and said he will not "kill" AI development over such concerns, arguing AI will have greater impact than the Industrial Revolution or the internet. He said the administration will be cautious and rely on the Justice Department and other law enforcement to constrain AI where necessary, but otherwise will encourage AI, including superintelligence (SI).