> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-speakeasy-sdk-regen-1790369700.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# BatchListItemUsage

## Fields

| Field | Type | Required | Description | Example |
| - | - | - | - | - |
| `cache_creation` | [OptionalNullable\[components.AnthropicCacheCreation\]](../components/anthropiccachecreation.mdx) | :heavy\_minus\_sign: | N/A | \{<br />"ephemeral\_1h\_input\_tokens": 0,<br />"ephemeral\_5m\_input\_tokens": 100<br />} |
| `completion_tokens` | *int* | :heavy\_check\_mark: | The tokens generated | |
| `completion_tokens_details` | [OptionalNullable\[components.BatchListItemCompletionTokensDetails\]](../components/batchlistitemcompletiontokensdetails.mdx) | :heavy\_minus\_sign: | N/A | |
| `cost` | *OptionalNullable\[float]* | :heavy\_minus\_sign: | Cost of the completion | |
| `cost_details` | [OptionalNullable\[components.CostDetails\]](../components/costdetails.mdx) | :heavy\_minus\_sign: | Breakdown of upstream inference costs | \{<br />"upstream\_inference\_completions\_cost": 0.0004,<br />"upstream\_inference\_cost": null,<br />"upstream\_inference\_prompt\_cost": 0.0008<br />} |
| `is_byok` | *Optional\[bool]* | :heavy\_minus\_sign: | Whether a request was made using a Bring Your Own Key configuration | |
| `iterations` | List\[[components.AnthropicUsageIteration](../components/anthropicusageiteration.mdx)] | :heavy\_minus\_sign: | N/A | |
| `prompt_tokens` | *int* | :heavy\_check\_mark: | Including images, input audio, and tools if any | |
| `prompt_tokens_details` | [OptionalNullable\[components.BatchListItemPromptTokensDetails\]](../components/batchlistitemprompttokensdetails.mdx) | :heavy\_minus\_sign: | Breakdown of tokens used in the prompt. | |
| `server_tool_use` | [OptionalNullable\[components.BatchListItemServerToolUse\]](../components/batchlistitemservertooluse.mdx) | :heavy\_minus\_sign: | Usage for server-side tool execution (e.g., web search) | |
| `service_tier` | *OptionalNullable\[str]* | :heavy\_minus\_sign: | The service tier used by the upstream provider for this request | |
| `speed` | [OptionalNullable\[components.AnthropicSpeed\]](../components/anthropicspeed.mdx) | :heavy\_minus\_sign: | N/A | standard |
| `total_tokens` | *int* | :heavy\_check\_mark: | Sum of the above two fields | |