> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# STTUsage

Aggregated usage statistics for the request

## Fields

| Field           | Type               | Required             | Description                                    | Example  |
| --------------- | ------------------ | -------------------- | ---------------------------------------------- | -------- |
| `cost`          | *Optional\[float]* | :heavy\_minus\_sign: | Total cost of the request in USD               | 0.000508 |
| `input_tokens`  | *Optional\[int]*   | :heavy\_minus\_sign: | Number of input tokens billed for this request | 83       |
| `output_tokens` | *Optional\[int]*   | :heavy\_minus\_sign: | Number of output tokens generated              | 30       |
| `seconds`       | *Optional\[float]* | :heavy\_minus\_sign: | Duration of the input audio in seconds         | 9.2      |
| `total_tokens`  | *Optional\[int]*   | :heavy\_minus\_sign: | Total number of tokens used (input + output)   | 113      |