{
  "description": "Token accounting for a single request, normalised across providers.",
  "properties": {
    "prompt_tokens": {
      "default": 0,
      "title": "Prompt Tokens",
      "type": "integer"
    },
    "completion_tokens": {
      "default": 0,
      "title": "Completion Tokens",
      "type": "integer"
    },
    "total_tokens": {
      "default": 0,
      "title": "Total Tokens",
      "type": "integer"
    }
  },
  "title": "Usage",
  "type": "object"
}