diff --git a/litellm/litellm_core_utils/core_helpers.py b/litellm/litellm_core_utils/core_helpers.py
index 1ab390f3e38..aa7d6ca1699 100644
--- a/litellm/litellm_core_utils/core_helpers.py
+++ b/litellm/litellm_core_utils/core_helpers.py
@@ -261,11 +261,6 @@ def remove_index_from_tool_calls(
                 for tool_call in _tool_calls:
                     if isinstance(tool_call, dict) and "index" in tool_call:  # Type guard to ensure it's a dict
                         tool_call.pop("index", None)
-                    elif hasattr(tool_call, "index"):
-                        try:
-                            delattr(tool_call, "index")
-                        except Exception:
-                            pass
 
 
 def remove_items_at_indices(items: list[Any] | None, indices: Iterable[int]) -> None:
diff --git a/litellm/llms/cohere/chat/v2_transformation.py b/litellm/llms/cohere/chat/v2_transformation.py
index 007b05a5af6..c43635f2f5f 100644
--- a/litellm/llms/cohere/chat/v2_transformation.py
+++ b/litellm/llms/cohere/chat/v2_transformation.py
@@ -170,10 +170,10 @@ class CohereV2ChatConfig(OpenAIGPTConfig):
         self,
         model: str,
         messages: list[AllMessageValues],
-        optional_params: dict,
-        litellm_params: dict,
-        headers: dict,
-    ) -> dict:
+        optional_params: dict[str, object],
+        litellm_params: dict[str, object],
+        headers: dict[str, object],
+    ) -> dict[str, object]:
         data: Final = super().transform_request(model, messages, optional_params, litellm_params, headers)
         messages_to_send: Final = data.get("messages")
         if messages_to_send is not None:
@@ -185,10 +185,10 @@ class CohereV2ChatConfig(OpenAIGPTConfig):
         self,
         model: str,
         messages: list[AllMessageValues],
-        optional_params: dict,
-        litellm_params: dict,
-        headers: dict,
-    ) -> dict:
+        optional_params: dict[str, object],
+        litellm_params: dict[str, object],
+        headers: dict[str, object],
+    ) -> dict[str, object]:
         data: Final = await super().async_transform_request(model, messages, optional_params, litellm_params, headers)
         messages_to_send: Final = data.get("messages")
         if messages_to_send is not None: