> ## 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.

# ClassifierDimensions

Group results by custom classifier tags, breaking down metrics by the specified dimension values. Requires an active classifier on the workspace.

## Example Usage

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

let value: ClassifierDimensions = {
  classifierId: "550e8400-e29b-41d4-a716-446655440000",
};
```

## Fields

| Field | Type | Required | Description | Example |
| - | - | - | - | - |
| `classifierId` | *string* | :heavy\_check\_mark: | UUID of the classifier whose tags to group by. | 550e8400-e29b-41d4-a716-446655440000 |
| `dimensionNames` | *string*\[] | :heavy\_minus\_sign: | N/A | |
| `includeNulls` | *boolean* | :heavy\_minus\_sign: | When true, also include generations that have no tag from this classifier. Defaults to false, which returns only classified generations. | |