diff --git a/litellm/proxy/auth/auth_checks.py b/litellm/proxy/auth/auth_checks.py
index 6ddf2cfeb20..570b6742f57 100644
--- a/litellm/proxy/auth/auth_checks.py
+++ b/litellm/proxy/auth/auth_checks.py
@@ -2949,6 +2949,26 @@ async def _get_agent_ids_from_access_groups(
     )
 
 
+def _resolve_all_team_model_sentinel_for_auth_check(
+    models: List[str],
+    llm_router: Optional[Router],
+    team_id: Optional[str],
+) -> List[str]:
+    if (
+        SpecialModelNames.all_team_models.value not in models
+        or team_id is None
+        or llm_router is None
+    ):
+        return models
+    proxy_models = llm_router.get_model_names()
+    non_sentinel_models = [
+        model for model in models if model != SpecialModelNames.all_team_models.value
+    ]
+    if not proxy_models:
+        return non_sentinel_models or models
+    return list(dict.fromkeys(non_sentinel_models + proxy_models))
+
+
 def _check_model_access_helper(
     model: str,
     llm_router: Optional[Router],
@@ -2966,6 +2986,12 @@ def _check_model_access_helper(
             model_name=model, team_id=team_id
         )
 
+    models = _resolve_all_team_model_sentinel_for_auth_check(
+        models=models,
+        llm_router=llm_router,
+        team_id=team_id,
+    )
+
     if (
         len(access_groups) > 0 and llm_router is not None
     ):  # check if token contains any model access groups
diff --git a/litellm/proxy/auth/model_checks.py b/litellm/proxy/auth/model_checks.py
index 6e477ac10a4..aa53954da8f 100644
--- a/litellm/proxy/auth/model_checks.py
+++ b/litellm/proxy/auth/model_checks.py
@@ -123,11 +123,13 @@ def get_key_models(
             and user_api_key_dict.team_id is not None
         ):
             all_models = list(user_api_key_dict.team_models)
-            # GH#30619: if team_models also contains all-team-models,
-            # expand to actual proxy model list instead of leaking
-            # the sentinel string into /model/info
             if SpecialModelNames.all_team_models.value in all_models:
-                all_models = list(proxy_model_list)
+                all_models = [
+                    model
+                    for model in all_models
+                    if model != SpecialModelNames.all_team_models.value
+                ]
+                all_models.extend(proxy_model_list)
                 if include_model_access_groups:
                     all_models.extend(model_access_groups.keys())
         if SpecialModelNames.all_proxy_models.value in all_models:
diff --git a/tests/test_litellm/proxy/auth/test_auth_checks.py b/tests/test_litellm/proxy/auth/test_auth_checks.py
index 52634cc25fe..2dcf040a556 100644
--- a/tests/test_litellm/proxy/auth/test_auth_checks.py
+++ b/tests/test_litellm/proxy/auth/test_auth_checks.py
@@ -351,6 +351,43 @@ async def test_can_key_call_model_all_team_models_no_team_id_is_denied():
     assert exc_info.value.type == ProxyErrorTypes.key_model_access_denied
 
 
+@pytest.mark.asyncio
+async def test_can_team_access_model_all_team_models_expands_router_models():
+    from litellm import Router
+    from litellm.proxy._types import SpecialModelNames
+    from litellm.proxy.auth.auth_checks import can_team_access_model
+
+    team_object = LiteLLM_TeamTable(
+        team_id="team-123",
+        models=[SpecialModelNames.all_team_models.value],
+    )
+    router = Router(
+        model_list=[
+            {
+                "model_name": "allowed-model",
+                "litellm_params": {"model": "openai/gpt-4o", "api_key": "sk-test"},
+            }
+        ]
+    )
+
+    assert (
+        await can_team_access_model(
+            model="allowed-model",
+            team_object=team_object,
+            llm_router=router,
+        )
+        is True
+    )
+    with pytest.raises(ProxyException) as exc_info:
+        await can_team_access_model(
+            model="blocked-model",
+            team_object=team_object,
+            llm_router=router,
+        )
+
+    assert exc_info.value.type == ProxyErrorTypes.team_model_access_denied
+
+
 @pytest.mark.asyncio
 async def test_get_key_object_should_reconnect_once_on_db_connection_error():
     mock_prisma_client = MagicMock()
diff --git a/tests/test_litellm/proxy/auth/test_model_checks.py b/tests/test_litellm/proxy/auth/test_model_checks.py
index d35e4848ef7..261485e8965 100644
--- a/tests/test_litellm/proxy/auth/test_model_checks.py
+++ b/tests/test_litellm/proxy/auth/test_model_checks.py
@@ -565,6 +565,27 @@ def test_get_key_models_all_team_models_recursive_team():
     assert set(result) == {"model-a", "model-b"}
 
 
+def test_get_key_models_all_team_models_keeps_mixed_team_entries():
+    from litellm.proxy.auth.model_checks import get_key_models
+    from litellm.proxy._types import SpecialModelNames
+
+    user_api_key_dict = type(
+        "obj",
+        (object,),
+        {
+            "models": [SpecialModelNames.all_team_models.value],
+            "team_id": "team-1",
+            "team_models": [
+                SpecialModelNames.all_team_models.value,
+                "restricted-model",
+            ],
+        },
+    )()
+    result = get_key_models(user_api_key_dict, ["model-a", "model-b"], {})
+    assert SpecialModelNames.all_team_models.value not in result
+    assert set(result) == {"model-a", "model-b", "restricted-model"}
+
+
 def test_get_team_models_all_team_models_expands():
     """GH#30619: all-team-models in team_models should expand."""
     from litellm.proxy.auth.model_checks import get_team_models