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)→
More from coding & agent
- Open-Source Agentic AI Security Lab: 9 Scenarios Breaking Agent Authorization — Rewanth_Tammana · 2026-09-16
- Models don't have agency, systems do: the one-token trick that seeds tool use — sethjuarez · 2026-09-16
- Agent Name Service Gives AI Agents Verifiable Identities via SCITT Receipts and OAuth — someone_somewhere_9 · 2026-09-16
- Dev ships multi-tenant MCP server for maginary, an OpenRouter-like multimedia generator — lutian · 2026-09-16
- Lessons from building agentic dev workflows: let software own the control loop — mostly_deterministic · 2026-09-16
- Dhruv Batra: screen-reading web agents can handle changing websites without APIs — Responsible-Grass452 · 2026-09-16