diff --git a/libcxx/utils/ci/buildkite-pipeline.yml b/libcxx/utils/ci/buildkite-pipeline.yml
--- a/libcxx/utils/ci/buildkite-pipeline.yml
+++ b/libcxx/utils/ci/buildkite-pipeline.yml
@@ -694,3 +694,35 @@
         - exit_status: -1  # Agent was lost
           limit: 2
     timeout_in_minutes: 120
+
+  - label: "AIX (32-bit)"
+    command: "libcxx/utils/ci/run-buildbot aix"
+    artifact_paths:
+      - "**/test-results.xml"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    env:
+        OBJECT_MODE: "32"
+    agents:
+        os: aix
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "AIX (64-bit)"
+    command: "libcxx/utils/ci/run-buildbot aix"
+    artifact_paths:
+      - "**/test-results.xml"
+    env:
+        OBJECT_MODE: "64"
+    agents:
+        os: aix
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120