diff --git a/python/sglang/test/test_utils.py b/python/sglang/test/test_utils.py
index 1c65776bc..5ebbca864 100644
--- a/python/sglang/test/test_utils.py
+++ b/python/sglang/test/test_utils.py
@@ -2223,6 +2223,12 @@ class ModelLaunchSettings:
                 self.extra_args.append(fixed_arg)
 
 
+class ModelEvalMetrics:
+    def __init__(self, accuracy: float, eval_time: float):
+        self.accuracy = accuracy
+        self.eval_time = eval_time
+
+
 def extract_trace_link_from_bench_one_batch_server_output(output: str) -> str:
     match = re.search(r"\[Profile\]\((.*?)\)", output)
     if match:
diff --git a/test/registered/backends/test_flashinfer_trtllm_gen_moe_backend.py b/test/registered/backends/test_flashinfer_trtllm_gen_moe_backend.py
index 72915e292..0105ba6bc 100644
--- a/test/registered/backends/test_flashinfer_trtllm_gen_moe_backend.py
+++ b/test/registered/backends/test_flashinfer_trtllm_gen_moe_backend.py
@@ -332,6 +332,14 @@ class TestFlashinferTrtllmGenMoeBackendNvFp4PerTokenActivationRouted(
     backend = "flashinfer_trtllm_routed"
 
 
+# Only this class is affected, but the file runs with failfast, so leaving it
+# enabled also cuts off the two classes that sort after it.
+@unittest.skip(
+    "flashinfer-ai/flashinfer#4486: on SM100/SM103 the TRTLLM_GEN tile-192 BMM "
+    "path returns non-finite MoE output from FlashInfer 0.6.16.post4 on, so the "
+    "first real prefill trips the sampler NaN assert and gsm8k scores 0.0. "
+    "See #34629 for the package bisect."
+)
 class TestFlashinferTrtllmGenMoeBackendNvFp4Online(
     FlashinferTrtllmGenMoeBackendNvFp4OnlineBase, CustomTestCase
 ):