diff --git a/litellm/tests/langfuse.log b/litellm/tests/langfuse.log
index e69de29bb2d..f47590a293e 100644
--- a/litellm/tests/langfuse.log
+++ b/litellm/tests/langfuse.log
@@ -0,0 +1,88 @@
+int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
+Traceback (most recent call last):
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/client.py", line 778, in generation
+    "usage": _convert_usage_input(usage) if usage is not None else None,
+             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/utils.py", line 77, in _convert_usage_input
+    "totalCost": extract_by_priority(usage, ["totalCost", "total_cost"]),
+                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/utils.py", line 32, in extract_by_priority
+    return int(usage[key])
+           ^^^^^^^^^^^^^^^
+TypeError: int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
+int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
+Traceback (most recent call last):
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/client.py", line 778, in generation
+    "usage": _convert_usage_input(usage) if usage is not None else None,
+             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/utils.py", line 77, in _convert_usage_input
+    "totalCost": extract_by_priority(usage, ["totalCost", "total_cost"]),
+                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/utils.py", line 32, in extract_by_priority
+    return int(usage[key])
+           ^^^^^^^^^^^^^^^
+TypeError: int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
+int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
+Traceback (most recent call last):
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/client.py", line 778, in generation
+    "usage": _convert_usage_input(usage) if usage is not None else None,
+             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/utils.py", line 77, in _convert_usage_input
+    "totalCost": extract_by_priority(usage, ["totalCost", "total_cost"]),
+                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/utils.py", line 32, in extract_by_priority
+    return int(usage[key])
+           ^^^^^^^^^^^^^^^
+TypeError: int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
+int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
+Traceback (most recent call last):
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/client.py", line 778, in generation
+    "usage": _convert_usage_input(usage) if usage is not None else None,
+             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/utils.py", line 77, in _convert_usage_input
+    "totalCost": extract_by_priority(usage, ["totalCost", "total_cost"]),
+                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/utils.py", line 32, in extract_by_priority
+    return int(usage[key])
+           ^^^^^^^^^^^^^^^
+TypeError: int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
+int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
+Traceback (most recent call last):
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/client.py", line 778, in generation
+    "usage": _convert_usage_input(usage) if usage is not None else None,
+             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/utils.py", line 77, in _convert_usage_input
+    "totalCost": extract_by_priority(usage, ["totalCost", "total_cost"]),
+                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  File "/opt/homebrew/lib/python3.11/site-packages/langfuse/utils.py", line 32, in extract_by_priority
+    return int(usage[key])
+           ^^^^^^^^^^^^^^^
+TypeError: int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
+consumer is running...
+Getting observations... None, None, None, None, litellm-test-98e1cc75-bef8-4280-a2b9-e08633b81acd, None, GENERATION
+consumer is running...
+Getting observations... None, None, None, None, litellm-test-532d2bc8-f8d6-42fd-8f78-416bae79925d, None, GENERATION
+joining 1 consumer threads
+consumer thread 0 joined
+joining 1 consumer threads
+consumer thread 0 joined
+joining 1 consumer threads
+consumer thread 0 joined
+joining 1 consumer threads
+consumer thread 0 joined
+joining 1 consumer threads
+consumer thread 0 joined
+joining 1 consumer threads
+consumer thread 0 joined
+joining 1 consumer threads
+consumer thread 0 joined
+joining 1 consumer threads
+consumer thread 0 joined
+joining 1 consumer threads
+consumer thread 0 joined
+joining 1 consumer threads
+consumer thread 0 joined
+joining 1 consumer threads
+consumer thread 0 joined
+joining 1 consumer threads
+consumer thread 0 joined
diff --git a/litellm/tests/test_alangfuse.py b/litellm/tests/test_alangfuse.py
index 6c3830935ef..29718d4746a 100644
--- a/litellm/tests/test_alangfuse.py
+++ b/litellm/tests/test_alangfuse.py
@@ -205,8 +205,6 @@ async def test_langfuse_logging_without_request_response(stream):
         assert _trace_data[0].output == {
             "role": "assistant",
             "content": "redacted-by-litellm",
-            "function_call": None,
-            "tool_calls": None,
         }
 
     except Exception as e:
diff --git a/litellm/utils.py b/litellm/utils.py
index 65cf60c1e09..5ae4958197f 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -378,16 +378,13 @@ class Message(OpenAIObject):
         super(Message, self).__init__(**params)
         self.content = content
         self.role = role
-        self.tool_calls = None
-        self.function_call = None
-
         if function_call is not None:
             self.function_call = FunctionCall(**function_call)
 
         if tool_calls is not None:
-            self.tool_calls = [
-                ChatCompletionMessageToolCall(**tool_call) for tool_call in tool_calls
-            ]
+            self.tool_calls = []
+            for tool_call in tool_calls:
+                self.tool_calls.append(ChatCompletionMessageToolCall(**tool_call))
 
         if logprobs is not None:
             self._logprobs = ChoiceLogprobs(**logprobs)
@@ -413,8 +410,6 @@ class Message(OpenAIObject):
 
 
 class Delta(OpenAIObject):
-    tool_calls: Optional[List[ChatCompletionDeltaToolCall]] = None
-
     def __init__(
         self,
         content=None,