By early 2025, nearly one-third of new software functions in the U.S. were created with AI assistance, with productivity gains concentrated among experienced developers.
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AI is already writing almost one-third of new software code, study shows
Generative AI is reshaping software development—and fast. A new study published in Science shows that AI-assisted coding is spreading rapidly, though unevenly: in the U.S., the share of new code relying on AI rose from 5% in 2022 to 29% in early 2025, compared with just 12% in China.