What OpenAI Did When ChatGPT Users Lost Touch With Reality

In tweaking its chatbot to appeal to more people, OpenAI made it riskier for some of them. Now the company has made its chatbot safer. Will that undermine its quest for growth?

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A.I. Toy Bear Speaks of Sex, Knives and Pills, Consumer Group Warns

The chatter left startled adults unsure whether they heard correctly. Testers warned that interactive toys like this one could allow children to stray into inappropriate exchanges.

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The A.I. Boom Is Driving the Economy. What Happens if It Falters?

A windfall for companies that build data centers and their suppliers is overshadowing weakness in other industries.

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The Fed, Crypto and A.I. Weigh on the Markets

Growing jitters over the Federal Reserve, crypto and the future of the artificial intelligence boom have helped drive a global sell-off.

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We Asked Roblox’s C.E.O. About Child Safety. It Got Tense.

This week the company announced that it would require users to undergo an A.I.-powered age estimation process in order to chat with others on the platform. Will this change reassure parents?

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Anxiety Over A.I. Spending Returns to Global Markets

A sharp reversal in Asian stocks, after a rally fueled by Nvidia’s strong earnings, underscores how fears of an A.I. bubble are driving broad market swings.

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The A.I. Boom Has Found Another Gear. Why Can’t People Shake Their Worries?

It is a time of superlatives in the tech industry, with historic profits, stock prices and deal prices. It’s enough to make some people very nervous.

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The Privacy Battle in Our Brains

My colleague talks about technology that can actually read our minds — and maybe even change them.

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Did Nvidia Do Enough to Chill A.I. Bubble Fears?

The chipmaker at the center of the artificial intelligence boom reported blowout results. But that hasn’t resolved some key questions behind the tech rally.

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To Meld A.I. With Supercomputers, National Labs Are Picking Up the Pace

A.I. has added urgency to the U.S. national laboratories that have been sites of cutting-edge scientific research, leading to deals with tech giants like Nvidia to speed up.

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