AI Coding Made CI a Bottleneck, So Linear Reworked Theirs
How Linear cut PR wait time and halved runner cost while its test suite quadrupled.
About AI Coding Made CI a Bottleneck, So Linear Reworked Theirs
Agents made shipping code faster; validating it did not keep up. Linear’s test suites almost quadrupled in 2026, yet the team brought pull-request wait time down from over six minutes to just over five and cut runner time per test roughly in half.
The four moves: upgraded infrastructure and tooling (faster third-party runners instead of GitHub Actions), optimised the jobs that gate other work, reduced repeated setup, and made test execution more efficient. The codebase is TypeScript, but most of it transfers.
Read it if your agents now open more PRs than your CI can absorb, which is the new normal for a small team running Claude Code or Codex all day.
The facts
- Type
- Guides
- Tags
- Developer ToolsAutomation
- Listed
- September 28, 2026
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