{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/ResponsesUsage",
  "title": "ResponsesUsage",
  "description": "Token usage and cost information for a Responses API request",
  "properties": {
    "cost": {
      "$ref": "#/components/schemas/ResponsesCost",
      "description": "Cost breakdown for the request"
    },
    "input_tokens": {
      "description": "Number of input tokens used",
      "format": "int64",
      "type": "integer"
    },
    "input_tokens_details": {
      "properties": {
        "cache_creation_input_tokens": {
          "description": "Tokens used for cache creation",
          "format": "int64",
          "type": "integer"
        },
        "cache_read_input_tokens": {
          "description": "Tokens read from cache",
          "format": "int64",
          "type": "integer"
        }
      },
      "type": "object"
    },
    "output_tokens": {
      "description": "Number of output tokens generated",
      "format": "int64",
      "type": "integer"
    },
    "tool_calls_details": {
      "description": "Details about tool call invocations",
      "additionalProperties": {
        "$ref": "#/components/schemas/ToolCallDetails"
      },
      "type": "object"
    },
    "total_tokens": {
      "description": "Total tokens used (input + output)",
      "format": "int64",
      "type": "integer"
    }
  },
  "required": [
    "input_tokens",
    "output_tokens",
    "total_tokens"
  ],
  "type": "object"
}