diff --git a/.buildkite/pipeline-utils/ci-stats/client.ts b/.buildkite/pipeline-utils/ci-stats/client.ts
index 25a761f1444c6..288ffed2c184b 100644
--- a/.buildkite/pipeline-utils/ci-stats/client.ts
+++ b/.buildkite/pipeline-utils/ci-stats/client.ts
@@ -164,6 +164,7 @@ export class CiStatsClient {
           jobName: string;
         }
     >;
+    durationPercentile?: number;
     groups: Array<{
       type: string;
       queue?: string;
diff --git a/.buildkite/pipeline-utils/ci-stats/pick_test_group_run_order.ts b/.buildkite/pipeline-utils/ci-stats/pick_test_group_run_order.ts
index 9af56eae97c47..cf54637aabbbc 100644
--- a/.buildkite/pipeline-utils/ci-stats/pick_test_group_run_order.ts
+++ b/.buildkite/pipeline-utils/ci-stats/pick_test_group_run_order.ts
@@ -231,6 +231,7 @@ export async function pickTestGroupRunOrder() {
   const prNumber = process.env.GITHUB_PR_NUMBER as string | undefined;
 
   const { sources, types } = await ciStats.pickTestGroupRunOrder({
+    durationPercentile: 75,
     sources: [
       // try to get times from a recent successful job on this PR
       ...(prNumber