---
title: List LLM Observability dataset versions
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: Docs > API Reference > LLM Observability
---

# List LLM Observability dataset versions{% #list-llm-observability-dataset-versions %}
Copy pageCopied
{% tab title="v2" %}
**Note**: This endpoint is in preview and is subject to change. If you have any feedback, contact [Datadog support](https://docs.datadoghq.com/help/).
| Datadog site      | API endpoint                                                                                    |
| ----------------- | ----------------------------------------------------------------------------------------------- |
| ap1.datadoghq.com | GET https://api.ap1.datadoghq.com/api/v2/llm-obs/v1/{project_id}/datasets/{dataset_id}/versions |
| ap2.datadoghq.com | GET https://api.ap2.datadoghq.com/api/v2/llm-obs/v1/{project_id}/datasets/{dataset_id}/versions |
| app.datadoghq.eu  | GET https://api.datadoghq.eu/api/v2/llm-obs/v1/{project_id}/datasets/{dataset_id}/versions      |
| app.ddog-gov.com  | GET https://api.ddog-gov.com/api/v2/llm-obs/v1/{project_id}/datasets/{dataset_id}/versions      |
| us2.ddog-gov.com  | GET https://api.us2.ddog-gov.com/api/v2/llm-obs/v1/{project_id}/datasets/{dataset_id}/versions  |
| app.datadoghq.com | GET https://api.datadoghq.com/api/v2/llm-obs/v1/{project_id}/datasets/{dataset_id}/versions     |
| us3.datadoghq.com | GET https://api.us3.datadoghq.com/api/v2/llm-obs/v1/{project_id}/datasets/{dataset_id}/versions |
| us5.datadoghq.com | GET https://api.us5.datadoghq.com/api/v2/llm-obs/v1/{project_id}/datasets/{dataset_id}/versions |

### Overview

List the active versions of a dataset. A version is created each time a dataset is referenced by an experiment run.

### Arguments

#### Path Parameters

| Name                         | Type   | Description                              |
| ---------------------------- | ------ | ---------------------------------------- |
| project_id [*required*] | string | The ID of the LLM Observability project. |
| dataset_id [*required*] | string | The ID of the LLM Observability dataset. |

### Response

{% tab title="200" %}
OK
{% tab title="Model" %}
Response containing the active versions of an LLM Observability dataset.

| Parent field | Field                            | Type      | Description                                                                                       |
| ------------ | -------------------------------- | --------- | ------------------------------------------------------------------------------------------------- |
|              | data [*required*]           | [object]  | List of dataset versions.                                                                         |
| data         | attributes [*required*]     | object    | Attributes of an LLM Observability dataset version.                                               |
| attributes   | dataset_id [*required*]     | string    | Unique identifier of the dataset this version belongs to.                                         |
| attributes   | last_used [*required*]      | date-time | Timestamp when this dataset version was last referenced. Null if the version has never been used. |
| attributes   | version_number [*required*] | int32     | Sequential version number for this dataset version.                                               |
| data         | id [*required*]             | string    | Unique identifier of the dataset version.                                                         |
| data         | type [*required*]           | enum      | Resource type of an LLM Observability dataset version. Allowed enum values: `dataset_version`     |

{% /tab %}

{% tab title="Example" %}

```json
{
  "data": [
    {
      "attributes": {
        "dataset_id": "9f64e5c7-dc5a-45c8-a17c-1b85f0bec97d",
        "last_used": "2024-01-15T10:30:00Z",
        "version_number": 1
      },
      "id": "3fd6b5e0-8910-4b1c-a7d0-5b84de329012",
      "type": "dataset_version"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="400" %}
Bad Request
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="401" %}
Unauthorized
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="403" %}
Forbidden
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="404" %}
Not Found
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="429" %}
Too many requests
{% tab title="Model" %}
API error response.

| Field                    | Type     | Description       |
| ------------------------ | -------- | ----------------- |
| errors [*required*] | [string] | A list of errors. |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    "Bad Request"
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="500" %}
Internal Server Error
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

### Code Example

##### 
                  \# Path parameters export project_id="a33671aa-24fd-4dcd-9b33-a8ec7dde7751" export dataset_id="9f64e5c7-dc5a-45c8-a17c-1b85f0bec97d" \# Curl command curl -X GET "https://api.datadoghq.com/api/v2/llm-obs/v1/${project_id}/datasets/${dataset_id}/versions" \
-H "Accept: application/json" \
-H "DD-API-KEY: ${DD_API_KEY}" \
-H "DD-APPLICATION-KEY: ${DD_APP_KEY}" 
                
{% /tab %}