> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-5b6e02fd.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ChatGenerationTokenUsage - Python SDK

> ChatGenerationTokenUsage method reference

<Warning>
  The Python SDK and docs are currently in beta.
  Report issues on [GitHub](https://github.com/OpenRouterTeam/python-sdk/issues).
</Warning>

## Fields

| Field                       | Type                                                                                               | Required             | Description |
| --------------------------- | -------------------------------------------------------------------------------------------------- | -------------------- | ----------- |
| `completion_tokens`         | *float*                                                                                            | :heavy\_check\_mark: | N/A         |
| `prompt_tokens`             | *float*                                                                                            | :heavy\_check\_mark: | N/A         |
| `total_tokens`              | *float*                                                                                            | :heavy\_check\_mark: | N/A         |
| `completion_tokens_details` | [OptionalNullable\[components.CompletionTokensDetails\]](../components/completiontokensdetails.md) | :heavy\_minus\_sign: | N/A         |
| `prompt_tokens_details`     | [OptionalNullable\[components.PromptTokensDetails\]](../components/prompttokensdetails.md)         | :heavy\_minus\_sign: | N/A         |