diff --git a/litellm/proxy/management_endpoints/auto_router_endpoints.py b/litellm/proxy/management_endpoints/auto_router_endpoints.py
index 0920b2c39e2..d179e93c8f0 100644
--- a/litellm/proxy/management_endpoints/auto_router_endpoints.py
+++ b/litellm/proxy/management_endpoints/auto_router_endpoints.py
@@ -501,9 +501,7 @@ MAX_QUALITY_SIGNAL_ROWS: Final = 100_000
 
 QUALITY_SIGNALS_CACHE_TTL_SECONDS: Final = 3600
 
-_quality_signals_cache: Final = InMemoryCache(
-    max_size_in_memory=64, default_ttl=QUALITY_SIGNALS_CACHE_TTL_SECONDS
-)
+_quality_signals_cache: Final = InMemoryCache(max_size_in_memory=64, default_ttl=QUALITY_SIGNALS_CACHE_TTL_SECONDS)
 
 _QUALITY_SIGNALS_SQL: Final = """
 SELECT
@@ -564,7 +562,9 @@ def _quality_signals_for(
         if row.api_key not in reachable_by_key_dict:
             reachable_by_key_dict[row.api_key] = set()
         reachable_by_key_dict[row.api_key].add(row.model)
-    reachable_by_key: Final = MappingProxyType({key: frozenset(models) for key, models in reachable_by_key_dict.items()})
+    reachable_by_key: Final = MappingProxyType(
+        {key: frozenset(models) for key, models in reachable_by_key_dict.items()}
+    )
     reachable_models: Final = tuple(frozenset(row.model for row in router_key_rows))
     ranks: Final = rank_models_by_cost(llm_router, reachable_models) if llm_router is not None else MappingProxyType({})
 
diff --git a/tests/test_litellm/proxy/management_endpoints/test_auto_router_endpoints.py b/tests/test_litellm/proxy/management_endpoints/test_auto_router_endpoints.py
index d3d7e9f3df5..5fdc37af2b4 100644
--- a/tests/test_litellm/proxy/management_endpoints/test_auto_router_endpoints.py
+++ b/tests/test_litellm/proxy/management_endpoints/test_auto_router_endpoints.py
@@ -567,9 +567,7 @@ class TestAutoRouterQualitySignals:
         assert err.value.status_code == 400
 
     @pytest.mark.asyncio
-    async def test_a_window_over_the_row_cap_is_rejected_not_silently_truncated(
-        self, monkeypatch: pytest.MonkeyPatch
-    ):
+    async def test_a_window_over_the_row_cap_is_rejected_not_silently_truncated(self, monkeypatch: pytest.MonkeyPatch):
         from litellm.proxy.management_endpoints.auto_router_endpoints import (
             MAX_QUALITY_SIGNAL_ROWS,
         )
@@ -705,9 +703,7 @@ class TestAutoRouterQualitySignals:
         assert response.totals.routed.abandonment_rate_pct == 50.0
 
     @pytest.mark.asyncio
-    async def test_disconnect_before_first_token_is_excluded_from_abandonment(
-        self, monkeypatch: pytest.MonkeyPatch
-    ):
+    async def test_disconnect_before_first_token_is_excluded_from_abandonment(self, monkeypatch: pytest.MonkeyPatch):
         # Same shape as the test above, but the disconnect delivered nothing: the caller
         # never saw a response to judge, so it must not read as abandonment.
         rows = [
@@ -721,9 +717,7 @@ class TestAutoRouterQualitySignals:
         assert response.totals.routed.abandonment_rate_pct == 0.0
 
     @pytest.mark.asyncio
-    async def test_a_repeated_window_is_served_from_cache_without_a_second_scan(
-        self, monkeypatch: pytest.MonkeyPatch
-    ):
+    async def test_a_repeated_window_is_served_from_cache_without_a_second_scan(self, monkeypatch: pytest.MonkeyPatch):
         from litellm.proxy import proxy_server
         from litellm.proxy.management_endpoints.auto_router_endpoints import (
             get_auto_router_quality_signals,
@@ -750,9 +744,7 @@ class TestAutoRouterQualitySignals:
         assert scans == 1
         assert second == first
 
-        await get_auto_router_quality_signals(
-            user_api_key_dict=ADMIN, start_date="2026-08-01", end_date="2026-08-03"
-        )
+        await get_auto_router_quality_signals(user_api_key_dict=ADMIN, start_date="2026-08-01", end_date="2026-08-03")
         assert scans == 2
 
     @pytest.mark.asyncio