diff --git a/litellm/proxy/proxy_server.py b/litellm/proxy/proxy_server.py
index 9ee62f94647..2e57d3e0708 100644
--- a/litellm/proxy/proxy_server.py
+++ b/litellm/proxy/proxy_server.py
@@ -9089,6 +9089,7 @@ class ProxyStartupEvent:
                     prisma_client,
                     pod_lock_manager=proxy_logging_obj.db_spend_update_writer.pod_lock_manager,
                     alert=_alert_ptu_rollup_failure,
+                    router=llm_router,
                 )
 
             scheduler.add_job(
diff --git a/litellm/proxy/spend_tracking/ptu_flat_cost_rollup.py b/litellm/proxy/spend_tracking/ptu_flat_cost_rollup.py
index f1f7248c064..a4eac992d89 100644
--- a/litellm/proxy/spend_tracking/ptu_flat_cost_rollup.py
+++ b/litellm/proxy/spend_tracking/ptu_flat_cost_rollup.py
@@ -14,7 +14,6 @@ and share the existing unique constraint.
 
 import asyncio
 import json
-import sys
 from collections.abc import Awaitable, Callable, Mapping
 from dataclasses import dataclass
 from datetime import date, datetime, time, timedelta, timezone
@@ -327,16 +326,6 @@ class _LoadedDeployments:
     config_sourced: bool
 
 
-def _running_router() -> object | None:
-    """The proxy's router, or None outside a running proxy.
-
-    Read out of ``sys.modules`` rather than imported, so a rollup driven from a test or a
-    script does not pull the whole proxy server in behind it.
-    """
-    proxy_server: Final = sys.modules.get("litellm.proxy.proxy_server")
-    return getattr(proxy_server, "llm_router", None) if proxy_server is not None else None
-
-
 def _config_deployments(router: object | None, *, owned_by_db: frozenset[str]) -> tuple[_PTUDeployment, ...]:
     """Deployments the router holds that no ``LiteLLM_ProxyModelTable`` row owns.
 
@@ -357,15 +346,17 @@ def _config_deployments(router: object | None, *, owned_by_db: frozenset[str]) -
     )
 
 
-async def _load_ptu_models(prisma_client: "PrismaClient") -> _LoadedDeployments:
+async def _load_ptu_models(prisma_client: "PrismaClient", *, router: object | None) -> _LoadedDeployments:
     """Every deployment carrying valid manual PTU config, and every id the scan saw.
 
     Reserved capacity is billed by the provider whichever file declared it, so a
     deployment the proxy only knows from config.yaml accrues alongside the stored ones.
+    The router is handed in rather than read off the proxy module, so a run prices exactly
+    the deployments its caller declares and nothing a co-resident process left behind.
     """
     rows: Final = await prisma_client.db.litellm_proxymodeltable.find_many()
     db_ids: Final = frozenset(model_id for row in rows if (model_id := str(getattr(row, "model_id", "") or "")))
-    config_records: Final = _config_deployments(_running_router(), owned_by_db=db_ids)
+    config_records: Final = _config_deployments(router, owned_by_db=db_ids)
     models: Final = tuple(
         parsed for parsed in (_parse_ptu_model(row) for row in (*rows, *config_records)) if parsed is not None
     )
@@ -382,6 +373,7 @@ async def run_ptu_flat_cost_rollup(
     prisma_client: "PrismaClient",
     target_date: date | None = None,
     may_prune: bool = True,
+    router: object | None = None,
 ) -> RollupResult:
     """Rollup one UTC day of flat PTU cost across all PTU-configured model deployments.
 
@@ -406,7 +398,7 @@ async def run_ptu_flat_cost_rollup(
     date_str: Final = day.isoformat()
     run_started: Final = datetime.now(timezone.utc)
 
-    loaded: Final = await _load_ptu_models(prisma_client)
+    loaded: Final = await _load_ptu_models(prisma_client, router=router)
     ptu_models: Final = loaded.models
     charges: Final = _aggregate_charges(ptu_models, day)
 
@@ -527,6 +519,7 @@ async def _existing_sentinel_keys(
 async def run_ptu_flat_cost_backfill(
     prisma_client: "PrismaClient",
     today: date | None = None,
+    router: object | None = None,
 ) -> BackfillResult:
     """Price the elapsed days of every PTU window that carry no sentinel row yet.
 
@@ -546,7 +539,7 @@ async def run_ptu_flat_cost_backfill(
         verbose_proxy_logger.warning("PTU backfill: prisma_client is None, skipping")
         return BackfillResult(start=end, end=end, days_scanned=0, rows_written=0)
 
-    ptu_models: Final = (await _load_ptu_models(prisma_client)).models
+    ptu_models: Final = (await _load_ptu_models(prisma_client, router=router)).models
     days: Final = _backfill_window(ptu_models, end)
 
     if not days:
@@ -591,6 +584,7 @@ async def run_scheduled_ptu_rollup(
     pod_lock_manager: "PodLockManager | None" = None,
     target_date: date | None = None,
     alert: Callable[[str], Awaitable[None]] | None = None,
+    router: object | None = None,
 ) -> RollupResult | None:
     """Run the daily rollup under a cross-pod lock so only one proxy reconciles a day.
 
@@ -615,7 +609,7 @@ async def run_scheduled_ptu_rollup(
         return None
 
     if pod_lock_manager is None or pod_lock_manager.redis_cache is None:
-        return await _run_and_alert(prisma_client, target_date=target_date, alert=alert, may_prune=False)
+        return await _run_and_alert(prisma_client, target_date=target_date, alert=alert, may_prune=False, router=router)
 
     if not await pod_lock_manager.acquire_lock(cronjob_id=PTU_ROLLUP_JOB_ID, ttl=PTU_ROLLUP_LOCK_TTL_SECONDS):
         if await _lock_is_held(pod_lock_manager):
@@ -629,10 +623,10 @@ async def run_scheduled_ptu_rollup(
             "PTU rollup: could not take the rollup lock and no other pod holds it, "
             "running unguarded rather than skipping the day"
         )
-        return await _run_and_alert(prisma_client, target_date=target_date, alert=alert, may_prune=False)
+        return await _run_and_alert(prisma_client, target_date=target_date, alert=alert, may_prune=False, router=router)
 
     try:
-        return await _run_and_alert(prisma_client, target_date=target_date, alert=alert, may_prune=True)
+        return await _run_and_alert(prisma_client, target_date=target_date, alert=alert, may_prune=True, router=router)
     finally:
         await pod_lock_manager.release_lock(cronjob_id=PTU_ROLLUP_JOB_ID)
 
@@ -657,6 +651,7 @@ async def _run_and_alert(
     target_date: date | None,
     alert: "Callable[[str], Awaitable[None]] | None",
     may_prune: bool = True,
+    router: object | None = None,
 ) -> RollupResult:
     """Reconcile the day, catch up any days left unpriced, and alert on charges that did not land.
 
@@ -669,7 +664,9 @@ async def _run_and_alert(
     explicit date means reconcile exactly that day, so it stays a single-day operation.
     Its failure is contained: the day's own result is returned either way.
     """
-    result: Final = await run_ptu_flat_cost_rollup(prisma_client, target_date=target_date, may_prune=may_prune)
+    result: Final = await run_ptu_flat_cost_rollup(
+        prisma_client, target_date=target_date, may_prune=may_prune, router=router
+    )
     if result.rows_failed:
         await _deliver_alert(
             alert,
@@ -686,7 +683,7 @@ async def _run_and_alert(
             "by the provider with nothing attributing it here. Extend the window, or retire the deployment.",
         )
     if target_date is None:
-        await _backfill_and_alert(prisma_client, alert=alert)
+        await _backfill_and_alert(prisma_client, alert=alert, router=router)
     return result
 
 
@@ -694,6 +691,7 @@ async def _backfill_and_alert(
     prisma_client: "PrismaClient",
     *,
     alert: "Callable[[str], Awaitable[None]] | None",
+    router: object | None = None,
 ) -> None:
     """Catch up unpriced PTU days, alerting on charges that did not land.
 
@@ -701,7 +699,7 @@ async def _backfill_and_alert(
     caller whatever the catch-up pass does.
     """
     try:
-        backfill: Final = await run_ptu_flat_cost_backfill(prisma_client)
+        backfill: Final = await run_ptu_flat_cost_backfill(prisma_client, router=router)
     except Exception as exc:  # noqa: BLE001  # the catch-up pass must not fail the day's rollup
         verbose_proxy_logger.error("PTU backfill: catch-up pass failed, the day's rollup still stands: %s", exc)
         return
diff --git a/tests/test_litellm/proxy/spend_tracking/test_ptu_flat_cost_rollup.py b/tests/test_litellm/proxy/spend_tracking/test_ptu_flat_cost_rollup.py
index e039455607d..17a487ddd4b 100644
--- a/tests/test_litellm/proxy/spend_tracking/test_ptu_flat_cost_rollup.py
+++ b/tests/test_litellm/proxy/spend_tracking/test_ptu_flat_cost_rollup.py
@@ -1767,16 +1767,20 @@ async def test_the_prune_cutoff_allows_for_clock_skew_between_hosts():
 
 
 @pytest.mark.asyncio
-async def test_a_run_pricing_config_cannot_prune_a_row_it_did_not_scan(monkeypatch):
+async def test_a_run_pricing_config_cannot_prune_a_row_it_did_not_scan():
     """Staleness alone stops being evidence once two hosts hold different configuration: a
     row this run never considered belongs to a deployment another host is pricing from its
     own file, and sweeping it drops that charge."""
     table = _FakeSentinelTable()
     table.seed("t", DAY, "dep-elsewhere", 480.0, updated_at=datetime(2020, 1, 1, tzinfo=timezone.utc))
     entry = _router_entry(model_id="cfg-here", model_info=dict(_VALID_PTU))
-    monkeypatch.setattr(ptu_rollup, "_running_router", lambda: _router_holding(entry))
 
-    await run_scheduled_ptu_rollup(_prisma_for([], table), pod_lock_manager=_pod_lock(acquired=True), target_date=DAY)
+    await run_scheduled_ptu_rollup(
+        _prisma_for([], table),
+        pod_lock_manager=_pod_lock(acquired=True),
+        target_date=DAY,
+        router=_router_holding(entry),
+    )
 
     assert ("t", DAY.isoformat(), PTU_SENTINEL_API_KEY, "dep-elsewhere") in table.rows
     assert ("t", DAY.isoformat(), PTU_SENTINEL_API_KEY, "cfg-here") in table.rows
@@ -1784,7 +1788,7 @@ async def test_a_run_pricing_config_cannot_prune_a_row_it_did_not_scan(monkeypat
 
 
 @pytest.mark.asyncio
-async def test_a_deployment_deleted_from_the_table_keeps_the_day_it_was_charged(monkeypatch):
+async def test_a_deployment_deleted_from_the_table_keeps_the_day_it_was_charged():
     """The accepted cost of bounding the prune, driven through the sequence that produces
     it: charge the day while the deployment exists, remove it, run the day again. Nothing
     scans it now, so nothing may judge its row, and the amount it was billed stands."""
@@ -1793,18 +1797,19 @@ async def test_a_deployment_deleted_from_the_table_keeps_the_day_it_was_charged(
     live_row = _model_row(model_id="dep-live", model_info=ptu)
     doomed_row = _model_row(model_id="dep-doomed", model_info=ptu)
     charged_key = ("t", DAY.isoformat(), PTU_SENTINEL_API_KEY, "dep-doomed")
-    monkeypatch.setattr(
-        ptu_rollup, "_running_router", lambda: _router_holding(_router_entry(model_id="cfg", model_info=dict(ptu)))
-    )
+    router = _router_holding(_router_entry(model_id="cfg", model_info=dict(ptu)))
 
     await run_scheduled_ptu_rollup(
-        _prisma_for([live_row, doomed_row], table), pod_lock_manager=_pod_lock(acquired=True), target_date=DAY
+        _prisma_for([live_row, doomed_row], table),
+        pod_lock_manager=_pod_lock(acquired=True),
+        target_date=DAY,
+        router=router,
     )
     billed = table.rows[charged_key]["ptu_flat_cost"]
     table.rows[charged_key]["updated_at"] = datetime(2020, 1, 1, tzinfo=timezone.utc)
 
     await run_scheduled_ptu_rollup(
-        _prisma_for([live_row], table), pod_lock_manager=_pod_lock(acquired=True), target_date=DAY
+        _prisma_for([live_row], table), pod_lock_manager=_pod_lock(acquired=True), target_date=DAY, router=router
     )
 
     assert table.rows[charged_key]["ptu_flat_cost"] == billed
@@ -1842,7 +1847,7 @@ async def test_every_deployment_that_prices_is_inside_the_set_that_bounds_the_pr
         table,
     )
 
-    loaded = await ptu_rollup._load_ptu_models(prisma)
+    loaded = await ptu_rollup._load_ptu_models(prisma, router=None)
 
     assert {model.model_id for model in loaded.models} <= loaded.scanned_ids
     assert loaded.scanned_ids == {"dep-a", "dep-b", "dep-unpriced"}
@@ -1858,7 +1863,7 @@ async def test_a_priced_deployment_is_in_the_bound_even_with_an_id_the_scan_skip
         _FakeSentinelTable(),
     )
 
-    loaded = await ptu_rollup._load_ptu_models(prisma)
+    loaded = await ptu_rollup._load_ptu_models(prisma, router=None)
 
     assert {model.model_id for model in loaded.models} <= loaded.scanned_ids
 
@@ -1872,13 +1877,13 @@ async def test_the_prune_splits_the_id_set_across_statements(monkeypatch):
     table = _FakeSentinelTable()
     ptu = {"ptu_count": 5, "cost_per_ptu_per_hour": 2.0, "team_id": "t"}
     deployments = [_model_row(model_id=f"dep-{n}", model_info=ptu) for n in range(4)]
-    monkeypatch.setattr(
-        ptu_rollup, "_running_router", lambda: _router_holding(_router_entry(model_id="dep-4", model_info=dict(ptu)))
-    )
     table.seed("t", DAY, "dep-3", 480.0, updated_at=datetime(2020, 1, 1, tzinfo=timezone.utc))
 
     await run_scheduled_ptu_rollup(
-        _prisma_for(deployments, table), pod_lock_manager=_pod_lock(acquired=True), target_date=DAY
+        _prisma_for(deployments, table),
+        pod_lock_manager=_pod_lock(acquired=True),
+        target_date=DAY,
+        router=_router_holding(_router_entry(model_id="dep-4", model_info=dict(ptu))),
     )
 
     chunks = [call["model"]["in"] for call in table.delete_many_calls]
@@ -1911,140 +1916,124 @@ def _router_holding(*entries):
 
 
 @pytest.mark.asyncio
-async def test_a_config_declared_deployment_is_priced(monkeypatch):
+async def test_a_config_declared_deployment_is_priced():
     """The whole point. A PTU deployment the proxy only knows from config.yaml is not in
     LiteLLM_ProxyModelTable, so a DB-only scan bills the provider's reservation to nobody."""
     entry = _router_entry(model_id="cfg-1", model_name="gpt-4o-ptu", model_info=dict(_VALID_PTU))
-    monkeypatch.setattr(ptu_rollup, "_running_router", lambda: _router_holding(entry))
 
-    loaded = await ptu_rollup._load_ptu_models(_prisma_for([], _FakeSentinelTable()))
+    loaded = await ptu_rollup._load_ptu_models(_prisma_for([], _FakeSentinelTable()), router=_router_holding(entry))
 
     assert [(m.model_id, m.model_name, m.team_id) for m in loaded.models] == [("cfg-1", "gpt-4o-ptu", "t")]
     assert "cfg-1" in loaded.scanned_ids
 
 
 @pytest.mark.asyncio
-async def test_a_database_backed_router_entry_is_not_counted_twice(monkeypatch):
+async def test_a_database_backed_router_entry_is_not_counted_twice():
     """Every deployment loaded from the table is also in the router, flagged db_model. Pricing
     both copies would write two charges for one reservation."""
     row = _model_row(model_id="db-1", model_info=dict(_VALID_PTU))
     mirrored = _router_entry(model_id="db-1", model_info={**_VALID_PTU, "db_model": True})
-    monkeypatch.setattr(ptu_rollup, "_running_router", lambda: _router_holding(mirrored))
-
-    loaded = await ptu_rollup._load_ptu_models(_prisma_for([row], _FakeSentinelTable()))
-
-    assert [m.model_id for m in loaded.models] == ["db-1"]
-
-
-@pytest.mark.asyncio
-async def test_a_router_entry_sharing_an_id_with_the_table_is_priced_once(monkeypatch):
-    """db_model is data the router carries rather than something this module controls, so the
-    id anti-join is what actually maps onto the failure: two charges under one id."""
-    row = _model_row(model_id="both-1", model_info=dict(_VALID_PTU))
-    unflagged = _router_entry(model_id="both-1", model_info=dict(_VALID_PTU))
-    monkeypatch.setattr(ptu_rollup, "_running_router", lambda: _router_holding(unflagged))
-
-    loaded = await ptu_rollup._load_ptu_models(_prisma_for([row], _FakeSentinelTable()))
-
-    assert [m.model_id for m in loaded.models] == ["both-1"]
-
-
-@pytest.mark.asyncio
-async def test_a_client_credential_clone_is_not_priced(monkeypatch):
-    """Supplying an api_key on a request mints a clone of the deployment under a fresh id,
-    carrying the source's PTU config. Pricing it bills one reservation per distinct caller key."""
-    source = _router_entry(model_id="cfg-1", model_info=dict(_VALID_PTU))
-    clone = _router_entry(model_id="cfg-1-clone", model_info={**_VALID_PTU, "original_model_id": "cfg-1"})
-    monkeypatch.setattr(ptu_rollup, "_running_router", lambda: _router_holding(source, clone))
-
-    loaded = await ptu_rollup._load_ptu_models(_prisma_for([], _FakeSentinelTable()))
-
-    assert [m.model_id for m in loaded.models] == ["cfg-1"]
-
-
-@pytest.mark.asyncio
-async def test_a_config_deployment_without_ptu_config_is_scanned_but_not_priced(monkeypatch):
-    """It has to stay in the scanned set or its leftover sentinel rows become unprunable."""
-    entry = _router_entry(model_id="cfg-plain", model_info={"team_id": "t"})
-    monkeypatch.setattr(ptu_rollup, "_running_router", lambda: _router_holding(entry))
-
-    loaded = await ptu_rollup._load_ptu_models(_prisma_for([], _FakeSentinelTable()))
-
-    assert loaded.models == ()
-    assert "cfg-plain" in loaded.scanned_ids
-
-
-@pytest.mark.asyncio
-async def test_no_router_in_the_process_prices_the_database_alone(monkeypatch):
-    """The rollup is importable and callable outside a running proxy."""
-    monkeypatch.setattr(ptu_rollup, "_running_router", lambda: None)
 
     loaded = await ptu_rollup._load_ptu_models(
-        _prisma_for([_model_row(model_id="db-1", model_info=dict(_VALID_PTU))], _FakeSentinelTable())
+        _prisma_for([row], _FakeSentinelTable()), router=_router_holding(mirrored)
     )
 
     assert [m.model_id for m in loaded.models] == ["db-1"]
 
 
 @pytest.mark.asyncio
-async def test_a_config_deployment_is_charged_end_to_end(monkeypatch):
+async def test_a_router_entry_sharing_an_id_with_the_table_is_priced_once():
+    """db_model is data the router carries rather than something this module controls, so the
+    id anti-join is what actually maps onto the failure: two charges under one id."""
+    row = _model_row(model_id="both-1", model_info=dict(_VALID_PTU))
+    unflagged = _router_entry(model_id="both-1", model_info=dict(_VALID_PTU))
+
+    loaded = await ptu_rollup._load_ptu_models(
+        _prisma_for([row], _FakeSentinelTable()), router=_router_holding(unflagged)
+    )
+
+    assert [m.model_id for m in loaded.models] == ["both-1"]
+
+
+@pytest.mark.asyncio
+async def test_a_client_credential_clone_is_not_priced():
+    """Supplying an api_key on a request mints a clone of the deployment under a fresh id,
+    carrying the source's PTU config. Pricing it bills one reservation per distinct caller key."""
+    source = _router_entry(model_id="cfg-1", model_info=dict(_VALID_PTU))
+    clone = _router_entry(model_id="cfg-1-clone", model_info={**_VALID_PTU, "original_model_id": "cfg-1"})
+
+    loaded = await ptu_rollup._load_ptu_models(
+        _prisma_for([], _FakeSentinelTable()), router=_router_holding(source, clone)
+    )
+
+    assert [m.model_id for m in loaded.models] == ["cfg-1"]
+
+
+@pytest.mark.asyncio
+async def test_a_config_deployment_without_ptu_config_is_scanned_but_not_priced():
+    """It has to stay in the scanned set or its leftover sentinel rows become unprunable."""
+    entry = _router_entry(model_id="cfg-plain", model_info={"team_id": "t"})
+
+    loaded = await ptu_rollup._load_ptu_models(_prisma_for([], _FakeSentinelTable()), router=_router_holding(entry))
+
+    assert loaded.models == ()
+    assert "cfg-plain" in loaded.scanned_ids
+
+
+@pytest.mark.asyncio
+async def test_no_router_in_the_process_prices_the_database_alone():
+    """The rollup is importable and callable outside a running proxy."""
+    loaded = await ptu_rollup._load_ptu_models(
+        _prisma_for([_model_row(model_id="db-1", model_info=dict(_VALID_PTU))], _FakeSentinelTable()), router=None
+    )
+
+    assert [m.model_id for m in loaded.models] == ["db-1"]
+
+
+@pytest.mark.asyncio
+async def test_a_config_deployment_is_charged_end_to_end():
     """Through the scheduled entry point, so the charge lands in a sentinel row rather than
     stopping at the loader."""
     table = _FakeSentinelTable()
     entry = _router_entry(model_id="cfg-1", model_name="gpt-4o-ptu", model_info=dict(_VALID_PTU))
-    monkeypatch.setattr(ptu_rollup, "_running_router", lambda: _router_holding(entry))
 
-    await run_scheduled_ptu_rollup(_prisma_for([], table), pod_lock_manager=_pod_lock(acquired=True), target_date=DAY)
+    await run_scheduled_ptu_rollup(
+        _prisma_for([], table),
+        pod_lock_manager=_pod_lock(acquired=True),
+        target_date=DAY,
+        router=_router_holding(entry),
+    )
 
     assert ("t", DAY.isoformat(), PTU_SENTINEL_API_KEY, "cfg-1") in table.rows
 
 
 @pytest.mark.asyncio
-async def test_a_stale_database_backed_router_entry_is_not_treated_as_config(monkeypatch):
+async def test_a_stale_database_backed_router_entry_is_not_treated_as_config():
     """The reconcile can leave a deployment on the router after its row is gone. The id
     anti-join cannot see that one, so the flag is what keeps it from being priced as though
     config.yaml had declared it."""
     stale = _router_entry(model_id="db-gone", model_info={**_VALID_PTU, "db_model": True})
-    monkeypatch.setattr(ptu_rollup, "_running_router", lambda: _router_holding(stale))
 
-    loaded = await ptu_rollup._load_ptu_models(_prisma_for([], _FakeSentinelTable()))
+    loaded = await ptu_rollup._load_ptu_models(_prisma_for([], _FakeSentinelTable()), router=_router_holding(stale))
 
     assert loaded.models == ()
 
 
-def test_the_router_lookup_reads_the_proxys_own_global():
-    """Every other config test replaces this helper, so without one test driving the real
-    body a typo in the module path or the attribute name leaves the whole feature dead in
-    production with the suite still green."""
-    import sys
-    import types as _types
+@pytest.mark.asyncio
+async def test_a_router_left_on_the_proxy_module_is_not_scanned(monkeypatch):
+    """A run scans the router its caller hands it and nothing else. Reading the proxy module's
+    global instead made every run depend on whatever else in the process had set one, which
+    is what a caller passing no router is asking not to happen."""
+    import litellm.proxy.proxy_server as proxy_server
 
-    assert ptu_rollup._running_router() is None or "litellm.proxy.proxy_server" in sys.modules
+    ambient = _router_holding(_router_entry(model_id="ambient-1", model_info=dict(_VALID_PTU)))
+    monkeypatch.setattr(proxy_server, "llm_router", ambient, raising=False)
 
-    sentinel = object()
-    stub = _types.SimpleNamespace(llm_router=sentinel)
-    real = sys.modules.get("litellm.proxy.proxy_server")
-    sys.modules["litellm.proxy.proxy_server"] = stub
-    try:
-        assert ptu_rollup._running_router() is sentinel
-        del stub.llm_router
-        assert ptu_rollup._running_router() is None
-    finally:
-        if real is None:
-            del sys.modules["litellm.proxy.proxy_server"]
-        else:
-            sys.modules["litellm.proxy.proxy_server"] = real
+    loaded = await ptu_rollup._load_ptu_models(_prisma_for([], _FakeSentinelTable()), router=None)
 
-
-def test_the_router_lookup_returns_none_outside_a_proxy():
-    import sys
-
-    real = sys.modules.pop("litellm.proxy.proxy_server", None)
-    try:
-        assert ptu_rollup._running_router() is None
-    finally:
-        if real is not None:
-            sys.modules["litellm.proxy.proxy_server"] = real
+    assert loaded.models == ()
+    assert loaded.scanned_ids == frozenset()
+    assert loaded.config_sourced is False
 
 
 @pytest.mark.parametrize("chunk", [None, ("dep-a", "dep-b")], ids=["unbounded", "bounded"])
@@ -2063,7 +2052,7 @@ def test_the_prune_filter_is_a_plain_dict(chunk):
 
 
 @pytest.mark.asyncio
-async def test_the_catch_up_pass_reaches_a_config_declared_deployment(monkeypatch):
+async def test_the_catch_up_pass_reaches_a_config_declared_deployment():
     """The catch-up shares the loader, so config deployments join it without being wired in.
     That is what prices the elapsed days of a reservation declared before today."""
     table = _FakeSentinelTable()
@@ -2073,9 +2062,10 @@ async def test_the_catch_up_pass_reaches_a_config_declared_deployment(monkeypatc
         model_id="cfg-back",
         model_info={"ptu_count": 100, "cost_per_ptu_per_hour": 0.02, "team_id": "t", "ptu_effective_from": started},
     )
-    monkeypatch.setattr(ptu_rollup, "_running_router", lambda: _router_holding(entry))
 
-    await run_scheduled_ptu_rollup(_prisma_for([], table), pod_lock_manager=_pod_lock(acquired=True))
+    await run_scheduled_ptu_rollup(
+        _prisma_for([], table), pod_lock_manager=_pod_lock(acquired=True), router=_router_holding(entry)
+    )
 
     charged = sorted(day for (_, day, _, model) in table.rows if model == "cfg-back")
     yesterday = (now.date() - timedelta(days=1)).isoformat()
diff --git a/tests/test_litellm/proxy/test_proxy_server.py b/tests/test_litellm/proxy/test_proxy_server.py
index 83e9095c8ec..71fb184eb4b 100644
--- a/tests/test_litellm/proxy/test_proxy_server.py
+++ b/tests/test_litellm/proxy/test_proxy_server.py
@@ -11048,6 +11048,35 @@ async def test_ptu_rollup_job_registered_at_startup(monkeypatch):
     assert scheduler.get_job(PTU_ROLLUP_JOB_ID) is not None
 
 
+@pytest.mark.asyncio
+async def test_ptu_rollup_job_hands_the_rollup_the_proxys_router(monkeypatch):
+    """The rollup prices PTU deployments declared in config.yaml, which only the router
+    knows about. It takes the router as an argument, so nothing but this call site puts the
+    proxy's own router in front of it: without it that half of the feature is dead."""
+    monkeypatch.delenv("STORE_MODEL_IN_DB", raising=False)
+    from litellm.proxy.spend_tracking import ptu_flat_cost_rollup
+    from litellm.proxy.spend_tracking.ptu_feature_flag import PTU_COST_ATTRIBUTION_ENV_VAR
+    from litellm.proxy.spend_tracking.ptu_flat_cost_rollup import PTU_ROLLUP_JOB_ID
+
+    monkeypatch.setenv(PTU_COST_ATTRIBUTION_ENV_VAR, "true")
+    calls = []
+    monkeypatch.setattr(
+        ptu_flat_cost_rollup,
+        "run_scheduled_ptu_rollup",
+        AsyncMock(side_effect=lambda *args, **kwargs: calls.append(kwargs)),
+    )
+
+    scheduler = await _run_scheduled_background_jobs()
+
+    import litellm.proxy.proxy_server as ps
+
+    router = MagicMock()
+    monkeypatch.setattr(ps, "llm_router", router)
+    await scheduler.get_job(PTU_ROLLUP_JOB_ID).func()
+
+    assert [call["router"] for call in calls] == [router]
+
+
 @pytest.mark.asyncio
 async def test_ptu_rollup_job_not_registered_without_opt_in(monkeypatch):
     """Without LITELLM_ENABLE_PTU_COST_ATTRIBUTION the rollup never runs, so no sentinel row