AI coding has made CI a bottleneck, so we reworked ours to keep up

AI coding has made CI a bottleneck, so we reworked ours to keep up Earlier this year, I opened Linear to find that Tuomas, our CTO, had assigned an issue to me, titled “CI costs are high.” While I was at it, he also wanted me to make CI faster. Agents have made it exponentially faster to ship code, but validating those changes hasn’t quite kept up at the same rate. Every PR still has to pass throu...