> ## 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.

# ContextBucket

Restrict to requests whose context length falls in this bucket (`1K`, `10K`, `100K`, `1M`, or `10M`). Exact dataset — cannot be combined with `category` or `language_type`.

## Example Usage

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

value := operations.ContextBucketOneK

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

## Values

| Name                       | Value |
| -------------------------- | ----- |
| `ContextBucketOneK`        | 1K    |
| `ContextBucketTenK`        | 10K   |
| `ContextBucketOneHundredK` | 100K  |
| `ContextBucketOneM`        | 1M    |
| `ContextBucketTenM`        | 10M   |