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
@@ -679,6 +679,22 @@
           limit: 2
     timeout_in_minutes: 120
 
+  - label: "LLDB Data Formatters"
+    command: "libcxx/utils/ci/run-buildbot check-lldb-data-formatters"
+    artifact_paths:
+      - "**/test-results.xml"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
   # Tests on non-Unix platforms
   - group: ":windows: Windows"
     steps:
diff --git a/libcxx/utils/ci/run-buildbot b/libcxx/utils/ci/run-buildbot
--- a/libcxx/utils/ci/run-buildbot
+++ b/libcxx/utils/ci/run-buildbot
@@ -463,6 +463,20 @@
     generate-cmake
     check-cxx-benchmarks
 ;;
+check-lldb-data-formatters)
+    clean
+    ${CMAKE} \
+        -S "${MONOREPO_ROOT}/llvm" \
+        -B "${BUILD_DIR}" \
+        -GNinja -DCMAKE_MAKE_PROGRAM="${NINJA}" \
+        -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+        -DLLVM_ENABLE_ASSERTIONS=ON \
+        -DLLDB_ENABLE_PYTHON=ON \
+        -DLLVM_ENABLE_PROJECTS='llvm;clang;lldb' \
+        -DLLVM_ENABLE_RUNTIMES='libcxx;libcxxabi'
+
+    ${NINJA} -C "${BUILD_DIR}" check-lldb-api-functionalities-data-formatter-data-formatter-stl-libcxx
+;;
 documentation)
     clean
     generate-cmake -DLLVM_ENABLE_SPHINX=ON