diff --git a/tests/local_testing/test_router.py b/tests/local_testing/test_router.py
index ee51c15101..f4fbeaff1c 100644
--- a/tests/local_testing/test_router.py
+++ b/tests/local_testing/test_router.py
@@ -718,61 +718,9 @@ def test_router_azure_acompletion():
         pytest.fail(f"Got unexpected exception on router! - {e}")
 
 
-# test_router_azure_acompletion()
-
-
-def test_router_context_window_fallback():
-    """
-    - Give a gpt-3.5-turbo model group with different context windows (4k vs. 16k)
-    - Send a 5k prompt
-    - Assert it works
-    """
-    import os
-
-    from large_text import text
-
-    litellm.set_verbose = False
-
-    print(f"len(text): {len(text)}")
-    try:
-        model_list = [
-            {
-                "model_name": "gpt-3.5-turbo",  # openai model name
-                "litellm_params": {  # params for litellm completion/embedding call
-                    "model": "azure/chatgpt-v-2",
-                    "api_key": os.getenv("AZURE_API_KEY"),
-                    "api_version": os.getenv("AZURE_API_VERSION"),
-                    "api_base": os.getenv("AZURE_API_BASE"),
-                    "base_model": "azure/gpt-35-turbo",
-                },
-            },
-            {
-                "model_name": "gpt-3.5-turbo-large",  # openai model name
-                "litellm_params": {  # params for litellm completion/embedding call
-                    "model": "gpt-3.5-turbo-1106",
-                    "api_key": os.getenv("OPENAI_API_KEY"),
-                },
-            },
-        ]
-
-        router = Router(model_list=model_list, set_verbose=True, context_window_fallbacks=[{"gpt-3.5-turbo": ["gpt-3.5-turbo-large"]}], num_retries=0)  # type: ignore
-
-        response = router.completion(
-            model="gpt-3.5-turbo",
-            messages=[
-                {"role": "system", "content": text},
-                {"role": "user", "content": "Who was Alexander?"},
-            ],
-        )
-
-        print(f"response: {response}")
-        assert response.model == "gpt-3.5-turbo-1106"
-    except Exception as e:
-        pytest.fail(f"Got unexpected exception on router! - {str(e)}")
-
-
 @pytest.mark.asyncio
-async def test_async_router_context_window_fallback():
+@pytest.mark.parametrize("sync_mode", [True, False])
+async def test_async_router_context_window_fallback(sync_mode):
     """
     - Give a gpt-4 model group with different context windows (8192k vs. 128k)
     - Send a 10k prompt
@@ -806,17 +754,23 @@ async def test_async_router_context_window_fallback():
         ]
 
         router = Router(model_list=model_list, set_verbose=True, context_window_fallbacks=[{"gpt-4": ["gpt-4-turbo"]}], num_retries=0)  # type: ignore
+        if sync_mode is False:
+            response = await router.acompletion(
+                model="gpt-4",
+                messages=[
+                    {"role": "system", "content": text * 2},
+                    {"role": "user", "content": "Who was Alexander?"},
+                ],
+            )
 
-        response = await router.acompletion(
-            model="gpt-4",
-            messages=[
-                {"role": "system", "content": text * 2},
-                {"role": "user", "content": "Who was Alexander?"},
-            ],
-        )
-
-        print(f"response: {response}")
-        assert "gpt-4-turbo" in response.model
+            print(f"response: {response}")
+            assert "gpt-4-turbo" in response.model
+        else:
+            response = router.completion(
+                model="gpt-4",
+                messages=[{"role": "user", "content": "Who was Alexander?"}],
+            )
+            assert "gpt-4-turbo" in response.model
     except Exception as e:
         pytest.fail(f"Got unexpected exception on router! - {str(e)}")