diff --git a/litellm/litellm_core_utils/llm_cost_calc/tool_call_cost_tracking.py b/litellm/litellm_core_utils/llm_cost_calc/tool_call_cost_tracking.py
index 99f269758fc..28c14a747e5 100644
--- a/litellm/litellm_core_utils/llm_cost_calc/tool_call_cost_tracking.py
+++ b/litellm/litellm_core_utils/llm_cost_calc/tool_call_cost_tracking.py
@@ -727,10 +727,8 @@ class StandardBuiltInToolCostTracking:
         web_search_options: Optional[WebSearchOptions] = None
         file_search: Optional[FileSearchTool] = None
 
-        # Check direct web_search_options first
-        web_search_options_dict = kwargs.get("web_search_options")
-        if web_search_options_dict:
-            web_search_options = WebSearchOptions(**web_search_options_dict)
+        if "web_search_options" in kwargs:
+            web_search_options = WebSearchOptions(**kwargs["web_search_options"])
 
         # Get tools once
         tools = kwargs.get("tools")
diff --git a/tests/test_litellm/litellm_core_utils/llm_cost_calc/test_tool_call_cost_tracking.py b/tests/test_litellm/litellm_core_utils/llm_cost_calc/test_tool_call_cost_tracking.py
index de77cea92a5..54d12dcf506 100644
--- a/tests/test_litellm/litellm_core_utils/llm_cost_calc/test_tool_call_cost_tracking.py
+++ b/tests/test_litellm/litellm_core_utils/llm_cost_calc/test_tool_call_cost_tracking.py
@@ -376,3 +376,11 @@ class TestGetBuiltInToolsFromKwargs:
         # Direct web_search_options should take precedence
         assert web_search is not None
         assert web_search.get("search_context_size") == "high"
+
+    def test_empty_web_search_options_dict_returns_web_search_options(self):
+        """An empty web_search_options dict should still produce WebSearchOptions (use defaults)."""
+        kwargs = {"web_search_options": {}}
+        web_search, file_search = StandardBuiltInToolCostTracking.get_built_in_tools_from_kwargs(kwargs)
+
+        assert web_search is not None
+        assert file_search is None