ChatUsage Type | OpenRouter TypeScript SDK

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Token usage statistics

Example Usage

import { ChatUsage } from "@openrouter/sdk/models";

let value: ChatUsage = {
  completionTokens: 15,
  promptTokens: 10,
  totalTokens: 25,
};

Field	Type	Required	Description	Example
`completionTokens`	number	:heavy_check_mark:	Number of tokens in the completion
`completionTokensDetails`	models.CompletionTokensDetails	:heavy_minus_sign:	Detailed completion token usage
`cost`	number	:heavy_minus_sign:	Cost of the completion
`costDetails`	models.CostDetails	:heavy_minus_sign:	Breakdown of upstream inference costs	`{"upstream_inference_completions_cost": 0.0004,"upstream_inference_cost": null,"upstream_inference_prompt_cost": 0.0008}`
`isByok`	boolean	:heavy_minus_sign:	Whether a request was made using a Bring Your Own Key configuration
`promptTokens`	number	:heavy_check_mark:	Number of tokens in the prompt
`promptTokensDetails`	models.PromptTokensDetails	:heavy_minus_sign:	Detailed prompt token usage
`totalTokens`	number	:heavy_check_mark:	Total number of tokens

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