Behind OpenAI’s Audacious Plan to Make A.I. Flow Like Electricity

Sam Altman, OpenAI’s chief executive, is talking to the United Arab Emirates, Asian chipmakers and U.S. officials to expand the computing power needed to build artificial intelligence.

Counting Inflation, the Stock Market May Have Hit a Peak

Robert Shiller, the Nobel laureate, says valuations adjusted for high inflation suggest stock returns for the next decade are likely to be modest.

Stocks Climb to Record, Lifted by Big Tech and Rate Cut Hopes

The S&P 500 crossed above its January 2022 peak after weeks of wavering. Investors have been buying stocks after homing in on signals that the Fed’s campaign of raising interest rates is over.

U.S. Tightens China’s Access to A.I. Chips

The further limits on shipments could cripple Beijing’s A.I. ambitions and dampen revenues for U.S. chip makers, analysts said.