> ## 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

```go theme={null}
import (
	"github.com/OpenRouterTeam/go-sdk/models/components"
)

value := components.RoutedServiceTierFlex

// Open enum: custom values can be created with a direct type cast
custom := components.RoutedServiceTier("custom_value")
```

## Values

| Name                        | Value    |
| --------------------------- | -------- |
| `RoutedServiceTierFlex`     | flex     |
| `RoutedServiceTierPriority` | priority |