diff --git a/tests/test_token_usage_and_cost_bounds.py b/tests/test_token_usage_and_cost_bounds.py
new file mode 100644
index 00000000000..4544f951a1d
--- /dev/null
+++ b/tests/test_token_usage_and_cost_bounds.py
@@ -0,0 +1,26 @@
+import pytest
+import litellm
+from litellm import completion_cost, Usage
+
+def test_usage_dataclass_initialization():
+    usage = Usage(prompt_tokens=150, completion_tokens=50, total_tokens=200)
+    assert usage.prompt_tokens == 150
+    assert usage.completion_tokens == 50
+    assert usage.total_tokens == 200
+
+def test_completion_cost_with_zero_tokens():
+    mock_resp = {
+        "model": "gpt-3.5-turbo",
+        "usage": {
+            "prompt_tokens": 0,
+            "completion_tokens": 0,
+            "total_tokens": 0
+        }
+    }
+    cost = completion_cost(completion_response=mock_resp)
+    assert cost == 0.0
+
+def test_model_cost_lookup():
+    cost_map = litellm.model_cost
+    assert isinstance(cost_map, dict)
+    assert "gpt-4" in cost_map or "gpt-3.5-turbo" in cost_map
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