# CompletionTokenDetails

> **Class** in `langsmith`

📖 [View in docs](https://reference.langchain.com/python/langsmith/_openapi_client/types/run/CompletionTokenDetails)

`completion_token_details` is the per-category breakdown of `completion_tokens`.

Category names are model-specific (for example `reasoning`, `audio`). Returned only when the `COMPLETION_TOKEN_DETAILS` field is requested.

## Signature

```python
CompletionTokenDetails()
```

## Extends

- `BaseModel`

## Properties

- `raw`

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[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/19d52419f47c93ca2c57a0d51c58d255f5949092/python/langsmith/_openapi_client/types/run.py#L31)