diff --git a/litellm/router.py b/litellm/router.py
index a98631b7f97..c18dfea1a36 100644
--- a/litellm/router.py
+++ b/litellm/router.py
@@ -13716,8 +13716,6 @@ class Router:
             self._stamp_or_clear_metadata_key(request_kwargs, "model_group", bound_model)
             return bound_registered_model
 
-        if self._request_header(request_kwargs, "x-app") != "cli":
-            return registered_model_name
         if self._select_pre_routing_strategy(registered_model_name, request_kwargs) is None:
             return registered_model_name
         await self._claude_code_session_router_cache.async_set_cache(
diff --git a/tests/unit/test_router/test_router.py b/tests/unit/test_router/test_router.py
index d4f9924dd13..0aedfce3598 100644
--- a/tests/unit/test_router/test_router.py
+++ b/tests/unit/test_router/test_router.py
@@ -11515,15 +11515,16 @@ class TestClaudeCodeSubagentSessionRouterBinding:
         }
 
     @pytest.mark.asyncio
-    async def test_subagent_concrete_model_uses_the_main_sessions_router(self):
+    @pytest.mark.parametrize("app", ["cli", "cli-bg"])
+    async def test_subagent_concrete_model_uses_the_main_sessions_router(self, app):
         router = self._router()
 
         await router.acompletion(
             model="smart-router",
             messages=[{"role": "user", "content": "main turn"}],
-            **self._request_kwargs(),
+            **self._request_kwargs(app=app),
         )
-        subagent_kwargs = self._request_kwargs(agent_id="agent-1234")
+        subagent_kwargs = self._request_kwargs(app=app, agent_id="agent-1234")
 
         response = await router.acompletion(
             model="expensive-model",