> ## 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.

# Arena

Design Arena only: arena to query. Defaults to `models` when source is `design-arena`.

## Example Usage

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

value := operations.ArenaModels

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

## Values

| Name            | Value    |
| --------------- | -------- |
| `ArenaModels`   | models   |
| `ArenaBuilders` | builders |
| `ArenaAgents`   | agents   |