diff --git a/python/sglang/test/kits/unified_radix_cache_kit.py b/python/sglang/test/kits/unified_radix_cache_kit.py
index e6fd24e58..8636b0bc5 100644
--- a/python/sglang/test/kits/unified_radix_cache_kit.py
+++ b/python/sglang/test/kits/unified_radix_cache_kit.py
@@ -16,7 +16,7 @@ def _random_suffixes(n, length, seed):
 
 
 class UnifiedRadixTreeTestMixin:
-    """Mixin: gsm8k, mmlu and multi-turn KL tests with multi-branch interleaving."""
+    """Mixin: gsm8k and multi-turn KL tests with multi-branch interleaving."""
 
     kl_threshold: float = 0.003
     max_new_tokens: int = 512
@@ -30,7 +30,6 @@ class UnifiedRadixTreeTestMixin:
     decode_hit_inter_batch_delay_s: float = 0
 
     gsm8k_threshold: float = 0.93
-    mmlu_threshold: float = 0.8
     num_gsm8k_questions: int = 200
 
     def test_gsm8k(self):
@@ -54,24 +53,6 @@ class UnifiedRadixTreeTestMixin:
         )
         self.assertGreaterEqual(metrics["accuracy"], self.gsm8k_threshold)
 
-    def test_mmlu(self):
-        """Simple-evals MMLU multi-task accuracy."""
-        from sglang.test.run_eval import run_eval as run_simple_eval
-
-        args = SimpleNamespace(
-            base_url=self.base_url,
-            model=self.model,
-            eval_name="mmlu",
-            num_examples=64,
-            num_threads=32,
-        )
-        metrics = run_simple_eval(args)
-        print(
-            f"[{self.__class__.__name__}] MMLU score: {metrics['score']:.3f} "
-            f"(threshold: {self.mmlu_threshold})"
-        )
-        self.assertGreaterEqual(metrics["score"], self.mmlu_threshold)
-
     def test_multiturn_logprobs_match(self):
         """Helper 1: 3-turn, no explicit cache seeding."""
         ids = self.input_ids[:4]
diff --git a/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_hicache_pp_kl.py b/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_hicache_pp_kl.py
index 04171f5eb..bea3fb06f 100644
--- a/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_hicache_pp_kl.py
+++ b/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_hicache_pp_kl.py
@@ -36,7 +36,6 @@ class TestUnifiedQwen3HiCachePP(UnifiedRadixTreeTestMixin, CustomTestCase):
     kl_threshold = 0.005
     gsm8k_threshold = 0.7
     num_gsm8k_questions = 50
-    mmlu_threshold = 0.7
     decode_cache_assert = staticmethod(_assert_pp_decode_cached_tokens)
 
     def test_gsm8k(self):
diff --git a/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_cp.py b/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_cp.py
index 66d3ae79b..40b8c733e 100644
--- a/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_cp.py
+++ b/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_cp.py
@@ -24,7 +24,6 @@ class TestUnifiedQwen3HiCacheCP(UnifiedRadixTreeTestMixin, CustomTestCase):
     max_running_requests = 32
     kl_threshold = 0.005
     gsm8k_threshold = 0.7
-    mmlu_threshold = 0.7
 
     @classmethod
     def setUpClass(cls):
diff --git a/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_dcp.py b/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_dcp.py
index 2b6e35a2f..69d6bdbec 100644
--- a/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_dcp.py
+++ b/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_dcp.py
@@ -42,7 +42,6 @@ class TestUnifiedKimiLinearDcpHiCache(UnifiedRadixTreeTestMixin, CustomTestCase)
 
     kl_threshold = 0.01
     gsm8k_threshold = 0.85
-    mmlu_threshold = 0.4
     prefill_cache_assert = staticmethod(
         make_mamba_prefill_assert(chunk_size=WIDENED_PAGE)
     )
diff --git a/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_hybrid_bitexact.py b/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_hybrid_bitexact.py
index 90f862ccb..58480570d 100644
--- a/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_hybrid_bitexact.py
+++ b/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_hybrid_bitexact.py
@@ -25,9 +25,9 @@ Measured avg_kl_div:
 extra coverage rather than as the guard for one fix. CI runs `1-gpu-large`, which
 is SM90.
 
-These classes do not use UnifiedRadixTreeTestMixin: it bundles gsm8k and mmlu,
-which an undertrained checkpoint cannot gate on, and each class here runs the
-harness its regression was actually reproduced with.
+These classes do not use UnifiedRadixTreeTestMixin: it bundles a gsm8k case an
+undertrained checkpoint cannot gate on, and each class here runs the harness its
+regression was actually reproduced with.
 
 The imported `test_`-prefixed helpers are aliased so pytest does not collect them
 as tests.
diff --git a/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_swa.py b/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_swa.py
index 1846a9c05..a57069e78 100644
--- a/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_swa.py
+++ b/test/registered/radix_cache/unified_radix_tree/test_unified_radix_cache_kl_swa.py
@@ -8,7 +8,6 @@ from sglang.test.test_utils import (
     DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
     DEFAULT_URL_FOR_TEST,
     CustomTestCase,
-    is_in_ci,
     popen_launch_server,
 )
 
@@ -22,11 +21,6 @@ class TestUnifiedSWARadixCache(UnifiedRadixTreeTestMixin, CustomTestCase):
 
     kl_threshold = 0.03
     gsm8k_threshold = 0.7
-    mmlu_threshold = 0.7
-
-    @unittest.skipIf(is_in_ci(), "SWA model mmlu eval not stable enough")
-    def test_mmlu(self):
-        super().test_mmlu()
 
     @classmethod
     def setUpClass(cls):