diff --git a/litellm/proxy/auth/model_checks.py b/litellm/proxy/auth/model_checks.py
index b89db51c6f1..6e477ac10a4 100644
--- a/litellm/proxy/auth/model_checks.py
+++ b/litellm/proxy/auth/model_checks.py
@@ -122,9 +122,14 @@ def get_key_models(
             SpecialModelNames.all_team_models.value in all_models
             and user_api_key_dict.team_id is not None
         ):
-            all_models = list(
-                user_api_key_dict.team_models
-            )  # copy to avoid mutating cached objects
+            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)
+                if include_model_access_groups:
+                    all_models.extend(model_access_groups.keys())
         if SpecialModelNames.all_proxy_models.value in all_models:
             all_models = list(proxy_model_list)  # copy to avoid mutating caller's list
             if include_model_access_groups:
@@ -160,6 +165,12 @@ def get_team_models(
         all_models_set.update(team_models)
         if SpecialModelNames.all_team_models.value in all_models_set:
             all_models_set.update(team_models)
+            # GH#30619: expand all-team-models sentinel
+            # to the actual proxy model list
+            all_models_set.discard(SpecialModelNames.all_team_models.value)
+            all_models_set.update(proxy_model_list)
+            if include_model_access_groups:
+                all_models_set.update(model_access_groups.keys())
         if SpecialModelNames.all_proxy_models.value in all_models_set:
             all_models_set.update(proxy_model_list)
             if include_model_access_groups:
diff --git a/tests/test_litellm/proxy/auth/test_model_checks.py b/tests/test_litellm/proxy/auth/test_model_checks.py
index 02b1f698132..d35e4848ef7 100644
--- a/tests/test_litellm/proxy/auth/test_model_checks.py
+++ b/tests/test_litellm/proxy/auth/test_model_checks.py
@@ -543,3 +543,56 @@ async def test_get_available_models_for_user_expands_query_team_wildcard(
     )
 
     assert "openai/gpt-4o-mini" in result
+
+
+def test_get_key_models_all_team_models_recursive_team():
+    """GH#30619: when key and team both have all-team-models,
+    the sentinel should expand to proxy_model_list."""
+    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],
+        },
+    )()
+    proxy_model_list = ["model-a", "model-b"]
+    result = get_key_models(user_api_key_dict, proxy_model_list, {})
+    assert SpecialModelNames.all_team_models.value not in result
+    assert set(result) == {"model-a", "model-b"}
+
+
+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
+    from litellm.proxy._types import SpecialModelNames
+
+    result = get_team_models(
+        [SpecialModelNames.all_team_models.value],
+        ["model-a", "model-b"],
+        {},
+    )
+    assert SpecialModelNames.all_team_models.value not in result
+    assert set(result) == {"model-a", "model-b"}
+
+
+def test_get_team_models_all_team_models_expands_with_access_groups():
+    """GH#30619: all-team-models with include_model_access_groups
+    should include access group keys."""
+    from litellm.proxy.auth.model_checks import get_team_models
+    from litellm.proxy._types import SpecialModelNames
+
+    result = get_team_models(
+        [SpecialModelNames.all_team_models.value],
+        ["model-a", "model-b"],
+        {"group-1": ["g1-model"], "group-2": ["g2-model"]},
+        include_model_access_groups=True,
+    )
+    assert SpecialModelNames.all_team_models.value not in result
+    assert "model-a" in result
+    assert "model-b" in result
+    assert "group-1" in result
+    assert "group-2" in result