diff --git a/.github/workflows/pr-test.yml b/.github/workflows/pr-test.yml
index feff45db0..f71dab83d 100644
--- a/.github/workflows/pr-test.yml
+++ b/.github/workflows/pr-test.yml
@@ -526,6 +526,49 @@ jobs:
           # temporarily put backend-independent cpu tests here
           python3 run_suite.py --hw cpu --suite default $CONTINUE_ON_ERROR_FLAG
 
+  stage-a-cpu-only:
+    needs: [check-changes, call-gate]
+    if: |
+      always() &&
+      (
+        (inputs.target_stage == 'stage-a-cpu-only') ||
+        (
+          !inputs.target_stage &&
+          (github.event_name == 'schedule' || (!failure() && !cancelled())) &&
+          (needs.check-changes.outputs.main_package == 'true')
+        )
+      )
+    runs-on: ubuntu-latest
+    steps:
+      - name: Free disk space
+        run: |
+          sudo rm -rf /usr/share/dotnet /usr/local/lib/android /opt/ghc
+          df -h
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.pr_head_sha || inputs.ref || github.sha }}
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
+
+      - name: Install dependencies
+        run: |
+          pip install -e "python/[dev]"
+
+      - name: Run test
+        timeout-minutes: 10
+        run: |
+          cd test/
+          CONTINUE_ON_ERROR_FLAG=""
+          if [[ "${{ needs.check-changes.outputs.continue_on_error }}" == "true" ]]; then
+            CONTINUE_ON_ERROR_FLAG="--continue-on-error"
+          fi
+          python3 run_suite.py --hw cpu --suite stage-a-cpu-only $CONTINUE_ON_ERROR_FLAG
+
   stage-b-test-small-1-gpu:
     needs: [check-changes, call-gate, stage-a-test-1, sgl-kernel-build-wheels]
     if: |
@@ -1752,6 +1795,7 @@ jobs:
         multimodal-gen-test-2-gpu,
 
         stage-a-test-1,
+        stage-a-cpu-only,
         stage-b-test-small-1-gpu,
         stage-b-test-large-1-gpu,
         stage-b-test-large-2-gpu,
diff --git a/scripts/ci/slash_command_handler.py b/scripts/ci/slash_command_handler.py
index 537956f8d..6d4558dd4 100644
--- a/scripts/ci/slash_command_handler.py
+++ b/scripts/ci/slash_command_handler.py
@@ -145,6 +145,7 @@ def handle_rerun_stage(
     # Valid NVIDIA stage names that support target_stage
     nvidia_stages = [
         "stage-a-test-1",
+        "stage-a-cpu-only",
         "stage-b-test-small-1-gpu",
         "stage-b-test-large-1-gpu",
         "stage-b-test-large-2-gpu",
diff --git a/test/srt/test_harmony_parser.py b/test/registered/parser/test_harmony_parser.py
similarity index 99%
rename from test/srt/test_harmony_parser.py
rename to test/registered/parser/test_harmony_parser.py
index 20cc02e5c..cee13af88 100644
--- a/test/srt/test_harmony_parser.py
+++ b/test/registered/parser/test_harmony_parser.py
@@ -9,8 +9,11 @@ from sglang.srt.parser.harmony_parser import (
     iter_tokens,
     prefix_hold,
 )
+from sglang.test.ci.ci_register import register_cpu_ci
 from sglang.test.test_utils import CustomTestCase
 
+register_cpu_ci(est_time=6, suite="stage-a-cpu-only")
+
 
 class TestEvent(CustomTestCase):
     def test_init(self):
diff --git a/test/srt/test_reasoning_parser.py b/test/registered/parser/test_reasoning_parser.py
similarity index 99%
rename from test/srt/test_reasoning_parser.py
rename to test/registered/parser/test_reasoning_parser.py
index 7d3f2a139..5c28066c7 100644
--- a/test/srt/test_reasoning_parser.py
+++ b/test/registered/parser/test_reasoning_parser.py
@@ -8,8 +8,11 @@ from sglang.srt.parser.reasoning_parser import (
     ReasoningParser,
     StreamingParseResult,
 )
+from sglang.test.ci.ci_register import register_cpu_ci
 from sglang.test.test_utils import CustomTestCase
 
+register_cpu_ci(est_time=5, suite="stage-a-cpu-only")
+
 
 class TestStreamingParseResult(CustomTestCase):
     def test_init_default(self):
diff --git a/test/run_suite.py b/test/run_suite.py
index 57ae2c505..a4c73a011 100644
--- a/test/run_suite.py
+++ b/test/run_suite.py
@@ -17,7 +17,7 @@ HW_MAPPING = {
 
 # Per-commit test suites (run on every PR)
 PER_COMMIT_SUITES = {
-    HWBackend.CPU: ["default"],
+    HWBackend.CPU: ["default", "stage-a-cpu-only"],
     HWBackend.AMD: ["stage-a-test-1", "stage-b-test-small-1-gpu"],
     HWBackend.CUDA: [
         "stage-a-test-1",
diff --git a/test/srt/run_suite.py b/test/srt/run_suite.py
index 7793145cb..c82a53f98 100644
--- a/test/srt/run_suite.py
+++ b/test/srt/run_suite.py
@@ -43,7 +43,6 @@ suites = {
         TestFile("test_fp8_utils.py", 9),
         TestFile("rotary_embedding/test_mrope.py", 10),
         TestFile("test_gpt_oss_1gpu.py", 402),
-        TestFile("test_harmony_parser.py", 6),
         TestFile("test_hidden_states.py", 55),
         TestFile("test_input_embeddings.py", 38),
         TestFile("test_io_struct.py", 8),
@@ -62,7 +61,6 @@ suites = {
         TestFile("test_prefill_adder.py", 1),
         TestFile("test_priority_scheduling.py", 130),
         TestFile("test_pytorch_sampling_backend.py", 66),
-        TestFile("test_reasoning_parser.py", 5),
         TestFile("test_request_queue_validation.py", 47),
         TestFile("test_retract_decode.py", 259),
         TestFile("test_score_api.py", 260),
@@ -207,7 +205,6 @@ suite_amd = {
         TestFile("test_constrained_decoding.py", 120),
         TestFile("test_eval_fp8_accuracy.py", 303),
         TestFile("test_external_models.py", 45),
-        TestFile("test_harmony_parser.py", 20),
         TestFile("test_input_embeddings.py", 38),
         TestFile("test_io_struct.py", 8),
         TestFile("test_jinja_template_utils.py", 1),
@@ -224,7 +221,6 @@ suite_amd = {
         TestFile("test_profile_merger.py", 12),
         TestFile("test_profile_merger_http_api.py", 15),
         TestFile("test_pytorch_sampling_backend.py", 66),
-        TestFile("test_reasoning_parser.py", 5),
         TestFile("test_request_queue_validation.py", 70),
         TestFile("test_retract_decode.py", 450),
         TestFile("test_rope_rocm.py", 3),