---
title: "UnifiedBenchmarksMeta"
---

## Fields

| Field                                                                                                                                                          | Type                                                                                                                                                           | Required                                                                                                                                                       | Description                                                                                                                                                    | Example                                                                                                                                                        |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `as_of`                                                                                                                                                        | *str*                                                                                                                                                          | :heavy_check_mark:                                                                                                                                             | ISO-8601 timestamp of when this data was last updated.                                                                                                         | 2026-06-03T12:00:00Z                                                                                                                                           |
| `citation`                                                                                                                                                     | *Nullable[str]*                                                                                                                                                | :heavy_check_mark:                                                                                                                                             | Required attribution when republishing this data, or null when results span multiple sources (attribute each item individually by its `source` discriminator). | Source: Artificial Analysis (artificialanalysis.ai) via OpenRouter (openrouter.ai/rankings).                                                                   |
| `model_count`                                                                                                                                                  | *int*                                                                                                                                                          | :heavy_check_mark:                                                                                                                                             | Number of unique models in the response.                                                                                                                       |                                                                                                                                                                |
| `source`                                                                                                                                                       | [Nullable[components.UnifiedBenchmarksMetaSource]](../components/unifiedbenchmarksmetasource.mdx)                                                               | :heavy_check_mark:                                                                                                                                             | The source filter applied, or null when all sources are returned.                                                                                              | artificial-analysis                                                                                                                                            |
| `source_url`                                                                                                                                                   | *Nullable[str]*                                                                                                                                                | :heavy_check_mark:                                                                                                                                             | URL of the upstream data source, or null when results span multiple sources.                                                                                   | https://artificialanalysis.ai                                                                                                                                  |
| `task_type`                                                                                                                                                    | *Nullable[str]*                                                                                                                                                | :heavy_check_mark:                                                                                                                                             | The task_type filter applied, or null if showing all.                                                                                                          |                                                                                                                                                                |
| `version`                                                                                                                                                      | [components.UnifiedBenchmarksMetaVersion](../components/unifiedbenchmarksmetaversion.mdx)                                                                       | :heavy_check_mark:                                                                                                                                             | Dataset version.                                                                                                                                               |                                                                                                                                                                |