> ## 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.

# Filter

## Fields

| Field      | Type                                                    | Required             | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | Example |
| ---------- | ------------------------------------------------------- | -------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------- |
| `Field`    | `string`                                                | :heavy\_check\_mark: | Dimension to filter on. Use the /meta endpoint for available dimensions.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | model   |
| `Operator` | `string`                                                | :heavy\_check\_mark: | Filter operator                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | eq      |
| `Value`    | [operations.Value1](../../models/operations/value1.mdx) | :heavy\_check\_mark: | Filter value (scalar or array depending on operator). Several dimensions are enriched in responses (returned as human-readable labels), but filters must use the underlying ID: `api_key_id` — numeric ID (from generation metadata) or key hash (64-char hex from GET /api/v1/keys, resolved server-side); `user` — Clerk user ID (e.g. "user\_abc123"), not the display name; `workspace` — workspace UUID, not the workspace name; `app` — numeric app ID, not the app title; `model` — permaslug (e.g. "openai/gpt-4o"), not the display name. Other dimensions (provider, origin, country, etc.) are not enriched and accept the value as returned. |         |