diff --git a/litellm/tests/test_anthropic_completion.py b/litellm/tests/test_anthropic_completion.py
index cac0945d8..15d150a56 100644
--- a/litellm/tests/test_anthropic_completion.py
+++ b/litellm/tests/test_anthropic_completion.py
@@ -48,6 +48,42 @@ def test_anthropic_completion_input_translation():
     ]
 
 
+def test_anthropic_completion_input_translation_with_metadata():
+    """
+    Tests that cost tracking works as expected with LiteLLM Proxy
+
+    LiteLLM Proxy will insert litellm_metadata for anthropic endpoints to track user_api_key and user_api_key_team_id
+
+    This test ensures that the `litellm_metadata` is not present in the translated input
+    It ensures that `litellm.acompletion()` will receieve metadata which is a litellm specific param
+    """
+    data = {
+        "model": "gpt-3.5-turbo",
+        "messages": [{"role": "user", "content": "Hey, how's it going?"}],
+        "litellm_metadata": {
+            "user_api_key": "88dc28d0f030c55ed4ab77ed8faf098196cb1c05df778539800c9f1243fe6b4b",
+            "user_api_key_alias": None,
+            "user_api_end_user_max_budget": None,
+            "litellm_api_version": "1.40.19",
+            "global_max_parallel_requests": None,
+            "user_api_key_user_id": "default_user_id",
+            "user_api_key_org_id": None,
+            "user_api_key_team_id": None,
+            "user_api_key_team_alias": None,
+            "user_api_key_team_max_budget": None,
+            "user_api_key_team_spend": None,
+            "user_api_key_spend": 0.0,
+            "user_api_key_max_budget": None,
+            "user_api_key_metadata": {},
+        },
+    }
+    translated_input = anthropic_adapter.translate_completion_input_params(kwargs=data)
+
+    assert "litellm_metadata" not in translated_input
+    assert "metadata" in translated_input
+    assert translated_input["metadata"] == data["litellm_metadata"]
+
+
 def test_anthropic_completion_e2e():
     litellm.set_verbose = True