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Google DeepMind finds no AI speed-up in AI research

Belfield, an engineer at Google, reports that AI writes more than 75 percent of production code, but a human examines each code change.

Who checks AI-written code? A grid of 100 squares for Google DeepMind code changes: 88 filled squares need human review, 12 outline squares are the 11.9% fully delegated to AI, up from 7.5%. AI writes over 75% of production code. Who checks AI-written code? Google DeepMind code changes 88% need human review 11.9% fully delegated to AI up from 7.5% AI writes over 75% of production code Source: Haydn Belfield, Google
At Google DeepMind, AI writes most production code, yet about 88 percent of code changes still need human oversight, according to Google engineer Haydn Belfield.

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  1. Google says self-improving AI isn't anywhere closethe-decoder.com
AI MATTER · NEWS · AI MATTER · NEWS ·14 OCT2026

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