concurrent.cd

“At Meta, significant lines of code per human-landed diff grew by 105.9% year over year and per-developer diff volume rose 51%, with agentic AI responsible for over 80% of that growth. Meanwhile, the share of diffs receiving timely review has declined, exposing a widening gap between code supply and reviewer bandwidth.”

— Chris Adams et al., Meta · Abstract

Quote · arxiv.org

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From “Code supply outgrows reviewer bandwidth at Meta”, found 2026-10-16.

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The best large-scale numbers yet on routing review by risk. The abstract also reports that RADAR-reviewed diffs have one third the revert rate and 1/50 the production-incident rate of other diffs.

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