diff --git a/tests/unit/llms/anthropic/messages/native/test_response_cache.py b/tests/unit/llms/anthropic/messages/native/test_response_cache.py
index 133bcd96433..bc3b1f6ac76 100644
--- a/tests/unit/llms/anthropic/messages/native/test_response_cache.py
+++ b/tests/unit/llms/anthropic/messages/native/test_response_cache.py
@@ -2,6 +2,7 @@ import asyncio
 from typing import Any, AsyncIterator, Dict, Final, List
 
 import pytest
+import pytest_asyncio
 
 
 import datetime
@@ -67,7 +68,7 @@ async def _collect(stream: AsyncIterator[bytes]) -> List[bytes]:
     return [chunk async for chunk in stream]
 
 
-@pytest.fixture(autouse=True)
+@pytest_asyncio.fixture(autouse=True, loop_scope="function")
 async def _drain_logging_worker():
     yield
     await GLOBAL_LOGGING_WORKER.flush()
diff --git a/tests/unit/llms/edenai/conftest.py b/tests/unit/llms/edenai/conftest.py
index 5ca5728354c..e11a515e953 100644
--- a/tests/unit/llms/edenai/conftest.py
+++ b/tests/unit/llms/edenai/conftest.py
@@ -2,7 +2,6 @@ import asyncio
 import uuid
 
 import pytest
-import pytest_asyncio
 
 import litellm
 from litellm.integrations.custom_logger import CustomLogger
@@ -40,9 +39,8 @@ class SpendCapture(CustomLogger):
         await asyncio.wait_for(GLOBAL_LOGGING_WORKER.flush(), timeout=10.0)
 
 
-@pytest_asyncio.fixture
-async def spend_capture(monkeypatch) -> SpendCapture:
-    GLOBAL_LOGGING_WORKER.start()  # rebinds the worker's queue to this test's event loop
+@pytest.fixture
+def spend_capture(monkeypatch) -> SpendCapture:
     capture = SpendCapture(call_id=f"eden-{uuid.uuid4()}")
     monkeypatch.setattr(litellm, "callbacks", [capture])
     return capture
diff --git a/tests/unit/llms/sail/conftest.py b/tests/unit/llms/sail/conftest.py
index 2b2a6e5cae0..c1156af5b12 100644
--- a/tests/unit/llms/sail/conftest.py
+++ b/tests/unit/llms/sail/conftest.py
@@ -4,11 +4,9 @@ from typing import Final
 
 import httpx
 import pytest
-import pytest_asyncio
 import respx
 
 import litellm
-from litellm.litellm_core_utils.logging_worker import GLOBAL_LOGGING_WORKER
 from tests.unit.llms.sail.helpers import SAIL_API_BASE, SpendCapture, chat_completion_body
 
 
@@ -26,9 +24,8 @@ def sail_env(local_model_cost_map: None, monkeypatch: pytest.MonkeyPatch) -> Ite
     litellm.in_memory_llm_clients_cache.flush_cache()
 
 
-@pytest_asyncio.fixture
-async def spend_capture(monkeypatch: pytest.MonkeyPatch) -> SpendCapture:
-    GLOBAL_LOGGING_WORKER.start()
+@pytest.fixture
+def spend_capture(monkeypatch: pytest.MonkeyPatch) -> SpendCapture:
     capture: Final = SpendCapture(call_id=f"sail-{uuid.uuid4()}")
     monkeypatch.setattr(litellm, "callbacks", [capture])
     return capture
diff --git a/tests/unit/router_strategy/test_budget_limiter_hotpath.py b/tests/unit/router_strategy/test_budget_limiter_hotpath.py
index 10704a29347..c79ff6325d2 100644
--- a/tests/unit/router_strategy/test_budget_limiter_hotpath.py
+++ b/tests/unit/router_strategy/test_budget_limiter_hotpath.py
@@ -2,6 +2,7 @@ import asyncio
 import contextlib
 import gc
 import logging
+import threading
 from types import SimpleNamespace
 from typing import Final
 from unittest.mock import AsyncMock, MagicMock
@@ -301,6 +302,27 @@ def test_router_add_deployment_registers_deployment_budget(disable_budget_sync,
     assert config.max_budget == 0.000000000001
 
 
+def _leave_a_task_pending_on_a_closed_loop() -> None:
+    def park_a_task_then_close_the_loop() -> None:
+        loop: Final = asyncio.new_event_loop()
+
+        async def park() -> None:
+            await loop.create_future()
+
+        loop.create_task(park())
+        loop.call_soon(loop.stop)
+        loop.run_forever()
+        loop.close()
+
+    parker: Final = threading.Thread(target=park_a_task_then_close_the_loop)
+    parker.start()
+    parker.join()
+
+
+def _non_asyncio_log_lines(caplog: pytest.LogCaptureFixture) -> list[str]:
+    return [record.getMessage() for record in caplog.records if record.name != "asyncio"]
+
+
 @pytest.mark.asyncio
 async def test_sync_refused_by_the_open_circuit_breaker_is_quiet_and_leaks_no_task(disable_budget_sync, caplog):
     """The budget sync runs every second, so an open breaker must not add an error line or an unretrieved task exception per cycle."""
@@ -322,11 +344,12 @@ async def test_sync_refused_by_the_open_circuit_breaker_is_quiet_and_leaks_no_ta
         with caplog.at_level(logging.ERROR):
             await limiter._sync_in_memory_spend_with_redis()
             await asyncio.sleep(0)
+            _leave_a_task_pending_on_a_closed_loop()
             gc.collect()
     finally:
         loop.set_exception_handler(None)
 
-    assert caplog.records == []
+    assert _non_asyncio_log_lines(caplog) == []
     unretrieved.assert_not_called()
     assert limiter.redis_increment_operation_queue == [
         {"key": "provider_spend:openai:1d", "increment_value": 0.5, "ttl": 60}
@@ -382,11 +405,12 @@ async def test_push_task_failure_is_logged_once_and_not_leaked(disable_budget_sy
         with caplog.at_level(logging.ERROR):
             await limiter._push_in_memory_increments_to_redis()
             await asyncio.sleep(0)
+            _leave_a_task_pending_on_a_closed_loop()
             gc.collect()
     finally:
         loop.set_exception_handler(None)
 
-    assert [record.getMessage() for record in caplog.records if record.name != "asyncio"] == [
+    assert _non_asyncio_log_lines(caplog) == [
         "Error syncing in-memory cache with Redis: Error 61 connecting to 127.0.0.1:6379"
     ]
     unretrieved.assert_not_called()