Anthropic's CI jobs grew 25x in 6 months as Claude writes 80% of its code
tylerjdunn · x · 2026-09-15
Anthropic's engineering blog details how agentic coding is straining CI: engineers ship 8x more code per quarter than in 2021-2025, with Claude authoring 80% and driving PR reviews. Tests grew 10x, pushing CI jobs up 25x in six months. The team patched its test impact analysis service three times (lasting 70, 29, then under a day) before rebuilding the architecture—echoing Steve Yegge's call that CI/CD as we know it is dying.
Related event: Claude writes 80% of code at Anthropic as CI tasks soar 25x(2 posts)→
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