I’m trying to calculate the total price of query to response API. I know I can get number of input and output tokens. However to calculate total price, I need to find out the number of tool calls as well.
Is there a way to get from Response API information on how many calls to file search tool were made?
Did you find the answer for this? If I use my custom tool - then would there still be a charge for the tool call?
Currently, the Responses API does not expose an explicit count of tool calls.
To calculate pricing, you need to count tool calls client-side by inspecting response.output and counting entries with type: “tool_call” (e.g. file_search).
OpenAI charges separately only for built-in tools like file_search.
Custom tools do not incur additional OpenAI charges beyond token usage.