> ## 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.

# DecisionsResponseUsage

## Fields

| Field           | Type               | Required             | Description |
| --------------- | ------------------ | -------------------- | ----------- |
| `cost`          | *Optional\[float]* | :heavy\_minus\_sign: | N/A         |
| `input_tokens`  | *int*              | :heavy\_check\_mark: | N/A         |
| `output_tokens` | *int*              | :heavy\_check\_mark: | N/A         |