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In Britain, amid growing evidence of harm to young people from extreme content online, a “Smartphone Free Childhood” campaign is going viral.

The start-up’s valuation, which has nearly doubled in six months, shows continued enthusiasm for A.I. among investors.

Eric Trump and Donald Trump Jr. are investing in a Bitcoin-mining company called American Bitcoin, created by the merger of two firms.

The company, which uses artificial intelligence to develop new treatments, now counts the venture capital firm Thrive Capital as a backer.

The Swedish retailer H&M said it was exploring the use of artificial intelligence in producing “digital twins” of models.

The private equity giant is considering investing as the video app works to follow a law that requires it to separate from its Chinese owner, ByteDance, by next week.

The deal combined two of Mr. Musk’s companies, which have been on different trajectories. The transaction valued xAI at $80 billion and X at $33 billion, the billionaire said.

The chairman, Brendan Carr, sent a letter to the company accusing it of violating equal employment opportunity regulations.

The start-up, which provides the processing power to help develop A.I. systems, faces questions about its debt and the overall economy.

President Trump’s intervention came while Mr. Milton was appealing his conviction on securities and wire fraud charges.

Carmakers are likely to face higher costs regardless of how they respond to President Trump’s 25 percent tariffs on cars and auto parts.

The company, which originally expected its shares to be priced between $47 and $55, will ask for $40 a share in a sign of stock market uncertainty.

An update to ChatGPT made it easy to simulate Hayao Miyazaki’s style of animation, which has flooded social media with memes.

Rebecca Kelly Slaughter and Alvaro Bedoya, who were fired from the agency this month, accused President Trump in a lawsuit of executive overreach.

A new Friends Tab will feature posts from a user’s friends and relatives, which was the original mission of the app.

Companies like OpenAI and China’s DeepSeek offer chatbots designed to take their time with an answer. Here’s how they work.

With a national ban increasingly unlikely, let’s reflect on how the app both sparks joy among users and raises mental health concerns.

A journalist’s inclusion in a national security discussion served as a reminder that you might not know every number in the chat — and that could be a big problem.

The app, which was introduced in 2014 and has hundreds of millions of users, is widely viewed as the safest messaging tool because of its encryption technology.

Nvidia showcased robots that could work in warehouses, pedal around like “Star Wars” droids and manipulate surgical equipment at its weeklong A.I. conference

The popular video app, which could be banned in the United States next month if it is not sold to a non-Chinese owner, is portraying itself as a savior of Americans and a champion of small businesses in a new campaign.