diff --git a/python/CuTeDSL/cutlass/base_dsl/arch.py b/python/CuTeDSL/cutlass/base_dsl/arch.py
index 1740486340..36fadf39d3 100644
--- a/python/CuTeDSL/cutlass/base_dsl/arch.py
+++ b/python/CuTeDSL/cutlass/base_dsl/arch.py
@@ -10,59 +10,12 @@
 # is strictly prohibited.
 
 from collections.abc import Callable
-from enum import Enum, EnumMeta
-import re
-from typing import Any
-
-
-class ArchMeta(EnumMeta):
-    """
-    Custom metaclass for Arch enum that supports dynamic aliases based on CUDA version.
-
-    - If cuda_version >= 13.0: sm_101/sm_101a/sm_101f are aliases of sm_110/sm_110a/sm_110f, use sm_110 as the canonical name
-    - Otherwise: sm_110/sm_110a/sm_110f are aliases of sm_101/sm_101a/sm_101f, use sm_101 as the canonical name
-    """
-
-    _arch_aliases: dict[str, str] = {}
-
-    def __new__(
-        mcs, name: str, bases: tuple[type, ...], namespace: dict[str, Any]
-    ) -> "ArchMeta":
-        cls = super().__new__(mcs, name, bases, namespace)  # type: ignore[arg-type]
-        from .version_info import CUDA_VERSION
-
-        if CUDA_VERSION.major >= 13:
-            # sm_101 -> sm_110, use sm_110 as the canonical name
-            mcs._arch_aliases = {
-                "sm_101": "sm_110",
-                "sm_101a": "sm_110a",
-                "sm_101f": "sm_110f",
-            }
-        else:
-            # sm_110 -> sm_101, use sm_101 as the canonical name
-            mcs._arch_aliases = {
-                "sm_110": "sm_101",
-                "sm_110a": "sm_101a",
-                "sm_110f": "sm_101f",
-            }
-        return cls
-
-    def __getattribute__(cls, name: str) -> Any:
-        # Use type.__getattribute__ to avoid recursion when accessing _arch_aliases
-        aliases = type.__getattribute__(cls, "_arch_aliases")
-        if name in aliases:
-            # Redirect to the target member
-            return type.__getattribute__(cls, aliases[name])
-        return super().__getattribute__(name)
-
-    def __getitem__(cls, name: str) -> "Arch":  # type: ignore[override]
-        # Support Arch["sm_101"] style access
-        if name in cls._arch_aliases:
-            return super().__getitem__(cls._arch_aliases[name])
-        return super().__getitem__(name)
-
-
-class Arch(Enum, metaclass=ArchMeta):
+from enum import Enum
+
+from .version_info import CUDA_VERSION
+
+
+class Arch(Enum):
     # sm_arch = (major, minor, suffix)
     # Ampere
     sm_80 = (8, 0, "")
@@ -77,21 +30,30 @@ class Arch(Enum, metaclass=ArchMeta):
     sm_100 = (10, 0, "")
     sm_100a = (10, 0, "a")
     sm_100f = (10, 0, "f")
-    sm_101 = (10, 1, "")
-    sm_101a = (10, 1, "a")
-    sm_101f = (10, 1, "f")
+    if CUDA_VERSION.major >= 13:
+        sm_110 = (11, 0, "")
+        sm_110a = (11, 0, "a")
+        sm_110f = (11, 0, "f")
+        sm_101 = sm_110
+        sm_101a = sm_110a
+        sm_101f = sm_110f
+    else:
+        sm_101 = (10, 1, "")
+        sm_101a = (10, 1, "a")
+        sm_101f = (10, 1, "f")
+        sm_110 = sm_101
+        sm_110a = sm_101a
+        sm_110f = sm_101f
     sm_103 = (10, 3, "")
     sm_103a = (10, 3, "a")
     sm_103f = (10, 3, "f")
-    sm_110 = (11, 0, "")
-    sm_110a = (11, 0, "a")
-    sm_110f = (11, 0, "f")
     sm_120 = (12, 0, "")
     sm_120a = (12, 0, "a")
     sm_120f = (12, 0, "f")
     sm_121 = (12, 1, "")
     sm_121a = (12, 1, "a")
     sm_121f = (12, 1, "f")
+
     def __init__(self, major: int, minor: int, suffix: str) -> None:
         self.major = major
         self.minor = minor
@@ -112,7 +74,7 @@ def HopperArchs(cls) -> tuple["Arch", ...]:
 
     @classmethod
     def BlackwellArchs(cls) -> tuple["Arch", ...]:
-        return (
+        archs = (
             Arch.sm_100,
             Arch.sm_100a,
             Arch.sm_100f,
@@ -132,6 +94,7 @@ def BlackwellArchs(cls) -> tuple["Arch", ...]:
             Arch.sm_121a,
             Arch.sm_121f,
         )
+        return tuple(dict.fromkeys(archs))
 
     def __str__(self) -> str:
         return self.name
@@ -168,7 +131,7 @@ def is_family_of(self, arch: "Arch") -> bool:
         """
         # sm_101 is renamed to sm_110, sm_101f is family of sm_110f, but is not family of sm_100f
         if self in [Arch.sm_101a, Arch.sm_101f]:
-            return arch.major == 11 and arch.minor >= 0
+            return arch in [Arch.sm_101, Arch.sm_101a, Arch.sm_101f]
 
         return (
             self.major == arch.major