Mr. Trump called Jensen Huang, Nvidia’s chief executive, while Mr. Huang was onstage in Los Angeles and criticized calls to slow down and regulate A.I.

The release of Muse Glimmer, a model that can be freely downloaded and modified, is likely to intensify a debate over whether A.I. should be restricted.

The voluntary review process will cover closed-source artificial intelligence models, but exclude those that publish the underlying code.

The disclosure followed OpenAI’s report last week that its own artificial intelligence had hacked into the network of an online library.

Anthropic and OpenAI are clashing with the rest of the tech industry over whether “open-source” models from China should be freely available or restricted.

The partnership, a first of its kind for the artificial intelligence company, will use the prediction market’s data to power some search results about the soccer tournament.

The experimental app, internally called “Arena,” would be independent of Facebook and Instagram. It could compete for attention with Polymarket and Kalshi, the biggest prediction markets.

The Guardrails Alliance, which has raised $5 million, is positioning itself as a populist effort that will take on the pro-A.I. interests trying to influence this year’s elections.

Strong investor interest in SpaceX could be good news for the A.I. rivals, which have signaled that they, too, intend to go public this year.

Elon Musk’s rocket company is spending big and losing money. That has raised questions about whether it can justify its valuation for its blockbuster initial public offering.

The flaw, which Meta said it had fixed, allowed anyone to take over accounts using a bug in the company’s new artificial intelligence software.

Elon Musk’s rocket company, on the cusp of the largest initial public offering ever, will soon end up in index funds after rule changes by Nasdaq and other index providers.

The artificial intelligence company, which is racing OpenAI to the stock market, has seen explosive growth over the last year thanks largely to technology that can automatically write computer code.

Anthropic raised $65 billion in new fund-raising that put its value at $900 billion, ahead of OpenAI’s last valuation of $730 billion, as the companies duel for A.I. dominance.