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.