> ## 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.

# RoutedServiceTier

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.

## Example Usage

```typescript theme={null}
import { RoutedServiceTier } from "@openrouter/sdk/models";

let value: RoutedServiceTier = "priority";

// Open enum: unrecognized values are captured as Unrecognized<string>
```

## Values

```typescript theme={null}
"flex" | "priority" | Unrecognized<string>
```