Book Review: ‘Empire of AI,’ by Karen Hao; ‘The Optimist,’ by Keach Hagey

Two journalists explore the artificial intelligence company OpenAI and present complementary portraits of its notorious co-founder.

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Is the Tech Industry Nearing an A.I. Slowdown?

Companies like OpenAI and Google are running out of the data used to train artificial intelligence systems. Can new methods continue years of rapid progress?

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