diff --git a/litellm/integrations/opentelemetry.py b/litellm/integrations/opentelemetry.py
index b5fbacdf3..bb9e34b1a 100644
--- a/litellm/integrations/opentelemetry.py
+++ b/litellm/integrations/opentelemetry.py
@@ -366,8 +366,6 @@ class OpenTelemetry(CustomLogger):
                         )
 
                     message = choice.get("message")
-                    if not isinstance(message, dict):
-                        message = message.dict()
                     tool_calls = message.get("tool_calls")
                     if tool_calls:
                         span.set_attribute(
diff --git a/litellm/utils.py b/litellm/utils.py
index d6efe79d3..ed405419b 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -326,6 +326,22 @@ class Function(OpenAIObject):
 
         super(Function, self).__init__(**data)
 
+    def __contains__(self, key):
+        # Define custom behavior for the 'in' operator
+        return hasattr(self, key)
+
+    def get(self, key, default=None):
+        # Custom .get() method to access attributes with a default value if the attribute doesn't exist
+        return getattr(self, key, default)
+
+    def __getitem__(self, key):
+        # Allow dictionary-style access to attributes
+        return getattr(self, key)
+
+    def __setitem__(self, key, value):
+        # Allow dictionary-style assignment of attributes
+        setattr(self, key, value)
+
 
 class ChatCompletionDeltaToolCall(OpenAIObject):
     id: Optional[str] = None
@@ -385,6 +401,22 @@ class ChatCompletionMessageToolCall(OpenAIObject):
         else:
             self.type = "function"
 
+    def __contains__(self, key):
+        # Define custom behavior for the 'in' operator
+        return hasattr(self, key)
+
+    def get(self, key, default=None):
+        # Custom .get() method to access attributes with a default value if the attribute doesn't exist
+        return getattr(self, key, default)
+
+    def __getitem__(self, key):
+        # Allow dictionary-style access to attributes
+        return getattr(self, key)
+
+    def __setitem__(self, key, value):
+        # Allow dictionary-style assignment of attributes
+        setattr(self, key, value)
+
 
 class Message(OpenAIObject):
     def __init__(