> ## 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.

# ClassifierFiltersFilter

## Fields

| Field      | Type                                                                                    | Required             | Description                                                                                                                                                          | Example     |
| ---------- | --------------------------------------------------------------------------------------- | -------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------- |
| `Field`    | `string`                                                                                | :heavy\_check\_mark: | Classifier dimension name to filter on (snake\_case identifier, e.g. "department", "work\_type").                                                                    | department  |
| `Operator` | `string`                                                                                | :heavy\_check\_mark: | Filter operator. Only equality/set operators are supported (eq, neq, in, not\_in) — ordered comparisons are not available because classification values are strings. | eq          |
| `Value`    | [operations.ClassifierFiltersValue](../../models/operations/classifierfiltersvalue.mdx) | :heavy\_check\_mark: | Filter value. Use a scalar (string or number) for eq/neq, or an array for in/not\_in.                                                                                | Engineering |