> ## 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.

# ProviderResponse

Details of a provider response for a generation attempt

## Fields

| Field                 | Type                                                                                                  | Required             | Description                                                                                                                                                    | Example         |
| --------------------- | ----------------------------------------------------------------------------------------------------- | -------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------- |
| `endpoint_id`         | *Optional\[str]*                                                                                      | :heavy\_minus\_sign: | Internal endpoint identifier                                                                                                                                   | ep\_abc123      |
| `id`                  | *Optional\[str]*                                                                                      | :heavy\_minus\_sign: | Upstream provider response identifier                                                                                                                          | chatcmpl-abc123 |
| `is_byok`             | *Optional\[bool]*                                                                                     | :heavy\_minus\_sign: | Whether the request used a bring-your-own-key                                                                                                                  | false           |
| `latency`             | *Optional\[float]*                                                                                    | :heavy\_minus\_sign: | Response latency in milliseconds                                                                                                                               | 1200            |
| `model_permaslug`     | *Optional\[str]*                                                                                      | :heavy\_minus\_sign: | Canonical model slug                                                                                                                                           | openai/gpt-4    |
| `provider_name`       | [Optional\[components.ProviderResponseProviderName\]](../components/providerresponseprovidername.mdx) | :heavy\_minus\_sign: | Name of the provider                                                                                                                                           | OpenAI          |
| `routed_service_tier` | [Optional\[components.RoutedServiceTier\]](../components/routedservicetier.mdx)                       | :heavy\_minus\_sign: | The service tier this request was routed to (e.g. flex, priority). The tier actually applied and billed is determined by the provider response and may differ. | priority        |
| `status`              | *Nullable\[int]*                                                                                      | :heavy\_check\_mark: | HTTP status code from the provider                                                                                                                             | 200             |