diff --git a/numbast/src/numbast/tools/tests/conftest.py b/numbast/src/numbast/tools/tests/conftest.py
index 4863a6c8..60c32239 100644
--- a/numbast/src/numbast/tools/tests/conftest.py
+++ b/numbast/src/numbast/tools/tests/conftest.py
@@ -14,6 +14,16 @@
 from click.testing import CliRunner
 
 from numbast.tools.static_binding_generator import static_binding_generator
+from numbast.static.renderer import clear_base_renderer_cache
+from numbast.static.function import clear_function_apis_registry
+
+
+@pytest.fixture(autouse=True)
+def reset_state():
+    """Reset global state before each test to avoid cross-test pollution."""
+    clear_base_renderer_cache()
+    clear_function_apis_registry()
+    yield
 
 
 @pytest.fixture
diff --git a/numbast/src/numbast/tools/tests/test_cli.py b/numbast/src/numbast/tools/tests/test_cli.py
index f9511596..36ccb371 100644
--- a/numbast/src/numbast/tools/tests/test_cli.py
+++ b/numbast/src/numbast/tools/tests/test_cli.py
@@ -10,8 +10,6 @@
 from numba import cuda
 import pytest
 
-from numbast.static.renderer import clear_base_renderer_cache
-from numbast.static.function import clear_function_apis_registry
 from numbast.tools.static_binding_generator import static_binding_generator
 
 
@@ -44,9 +42,6 @@ def kernel(arr):
     ],
 )
 def test_cli_yml_invalid_inputs(tmpdir, args, arch_str):
-    clear_base_renderer_cache()
-    clear_function_apis_registry()
-
     subdir = tmpdir.mkdir("sub")
     data = os.path.join(os.path.dirname(__file__), "data.cuh")
 
@@ -85,9 +80,6 @@ def test_cli_yml_invalid_inputs(tmpdir, args, arch_str):
 
 
 def test_cli_yml_inputs_full_spec(tmpdir, kernel, arch_str):
-    clear_base_renderer_cache()
-    clear_function_apis_registry()
-
     subdir = tmpdir.mkdir("sub")
     data = os.path.join(os.path.dirname(__file__), "data.cuh")
 
@@ -138,9 +130,6 @@ def test_cli_yml_inputs_full_spec(tmpdir, kernel, arch_str):
     "cc, expected", [("sm_70", False), ("sm_86", True), ("sm_90", True)]
 )
 def test_cli_yml_inputs_full_spec_with_cc(tmpdir, cc, expected):
-    clear_base_renderer_cache()
-    clear_function_apis_registry()
-
     subdir = tmpdir.mkdir("sub")
     data = os.path.join(os.path.dirname(__file__), "data.cuh")
 
@@ -188,9 +177,6 @@ def test_cli_yml_inputs_full_spec_with_cc(tmpdir, cc, expected):
 
 
 def test_yaml_deduce_missing_types(tmpdir, kernel, arch_str):
-    clear_base_renderer_cache()
-    clear_function_apis_registry()
-
     subdir = tmpdir.mkdir("sub")
     data = os.path.join(os.path.dirname(__file__), "data.cuh")
 
@@ -237,9 +223,6 @@ def test_yaml_deduce_missing_types(tmpdir, kernel, arch_str):
 
 
 def test_yaml_deduce_missing_datamodels(tmpdir, kernel, arch_str):
-    clear_base_renderer_cache()
-    clear_function_apis_registry()
-
     subdir = tmpdir.mkdir("sub")
     data = os.path.join(os.path.dirname(__file__), "data.cuh")
 
@@ -287,9 +270,6 @@ def test_yaml_deduce_missing_datamodels(tmpdir, kernel, arch_str):
 
 
 def test_yaml_exclude_function(tmpdir, arch_str):
-    clear_base_renderer_cache()
-    clear_function_apis_registry()
-
     subdir = tmpdir.mkdir("sub")
     data = os.path.join(os.path.dirname(__file__), "data.cuh")
 
@@ -350,9 +330,6 @@ def kernel(arr):
 
 
 def test_yaml_exclude_function_empty_list(tmpdir, kernel, arch_str):
-    clear_base_renderer_cache()
-    clear_function_apis_registry()
-
     subdir = tmpdir.mkdir("sub")
     data = os.path.join(os.path.dirname(__file__), "data.cuh")
 
@@ -401,9 +378,6 @@ def test_yaml_exclude_function_empty_list(tmpdir, kernel, arch_str):
 
 
 def test_yaml_exclude_struct(tmpdir, arch_str):
-    clear_base_renderer_cache()
-    clear_function_apis_registry()
-
     subdir = tmpdir.mkdir("sub")
     data = os.path.join(os.path.dirname(__file__), "data.cuh")
 
@@ -461,9 +435,6 @@ def kernel(arr):
 
 
 def test_yaml_exclude_struct_empty_list(tmpdir, kernel, arch_str):
-    clear_base_renderer_cache()
-    clear_function_apis_registry()
-
     subdir = tmpdir.mkdir("sub")
     data = os.path.join(os.path.dirname(__file__), "data.cuh")
 
@@ -546,9 +517,6 @@ def kernel_fail():
 
 
 def test_implit_ctor_lowering(tmpdir, implicit_conversion_kernel, arch_str):
-    clear_base_renderer_cache()
-    clear_function_apis_registry()
-
     subdir = tmpdir.mkdir("sub")
     data = os.path.join(os.path.dirname(__file__), "data_ctor_lowering.cuh")
 
diff --git a/numbast/src/numbast/tools/tests/test_symbol_exposure.py b/numbast/src/numbast/tools/tests/test_symbol_exposure.py
index 1b2ceac5..8abf641f 100644
--- a/numbast/src/numbast/tools/tests/test_symbol_exposure.py
+++ b/numbast/src/numbast/tools/tests/test_symbol_exposure.py
@@ -5,9 +5,6 @@
 import subprocess
 import sys
 
-from numbast.static.renderer import clear_base_renderer_cache
-from numbast.static.function import clear_function_apis_registry
-
 from cuda.core.experimental import Device
 
 dev = Device(0)
@@ -16,8 +13,6 @@
 
 def test_symbol_exposure(run_in_isolated_folder, arch_str):
     """Test that only a limited set of symbols are exposed via __all__ imports."""
-    clear_base_renderer_cache()
-    clear_function_apis_registry()
 
     res = run_in_isolated_folder(
         "cfg.yml.j2",