> ## 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.

# ExtractionsUsage

## Fields

| Field | Type | Required | Description |
| - | - | - | - |
| `cost` | *Optional\[float]* | ➖ | N/A |
| `image_tokens` | *Optional\[int]* | ➖ | N/A |
| `input_tokens` | *int* | ✔️ | N/A |
| `output_tokens` | *int* | ✔️ | N/A |
| `passes` | *Optional\[int]* | ➖ | Number of upstream passes when the fields did not fit in one. |
| `schema_tokens` | *Optional\[int]* | ➖ | N/A |
| `state_tokens` | *Optional\[int]* | ➖ | N/A |