## List batches

**get** `/batches`

List your organization's batches.

### Query Parameters

- `after: optional string`

  A cursor for use in pagination. `after` is an object ID that defines your place in the list. For instance, if you make a list request and receive 100 objects, ending with obj_foo, your subsequent call can include after=obj_foo in order to fetch the next page of the list.

- `limit: optional number`

  A limit on the number of objects to be returned. Limit can range between 1 and 100, and the default is 20.

### Returns

- `data: array of Batch`

  - `id: string`

  - `completion_window: string`

    The time frame within which the batch should be processed.

  - `created_at: number`

    The Unix timestamp (in seconds) for when the batch was created.

  - `endpoint: string`

    The OpenAI API endpoint used by the batch.

  - `input_file_id: string`

    The ID of the input file for the batch.

  - `object: "batch"`

    The object type, which is always `batch`.

    - `"batch"`

  - `status: "validating" or "failed" or "in_progress" or 5 more`

    The current status of the batch.

    - `"validating"`

    - `"failed"`

    - `"in_progress"`

    - `"finalizing"`

    - `"completed"`

    - `"expired"`

    - `"cancelling"`

    - `"cancelled"`

  - `cancelled_at: optional number or null`

    The Unix timestamp (in seconds) for when the batch was cancelled.

  - `cancelling_at: optional number or null`

    The Unix timestamp (in seconds) for when the batch started cancelling.

  - `completed_at: optional number or null`

    The Unix timestamp (in seconds) for when the batch was completed.

  - `error_file_id: optional string or null`

    The ID of the file containing the outputs of requests with errors.

  - `errors: optional object { data, object }  or null`

    - `data: optional array of BatchError`

      - `code: optional string`

        An error code identifying the error type.

      - `line: optional number or null`

        The line number of the input file where the error occurred, if applicable.

      - `message: optional string`

        A human-readable message providing more details about the error.

      - `param: optional string or null`

        The name of the parameter that caused the error, if applicable.

    - `object: optional string`

      The object type, which is always `list`.

  - `expired_at: optional number or null`

    The Unix timestamp (in seconds) for when the batch expired.

  - `expires_at: optional number or null`

    The Unix timestamp (in seconds) for when the batch will expire.

  - `failed_at: optional number or null`

    The Unix timestamp (in seconds) for when the batch failed.

  - `finalizing_at: optional number or null`

    The Unix timestamp (in seconds) for when the batch started finalizing.

  - `in_progress_at: optional number or null`

    The Unix timestamp (in seconds) for when the batch started processing.

  - `metadata: optional Metadata or null`

    Set of 16 key-value pairs that can be attached to an object. This can be
    useful for storing additional information about the object in a structured
    format, and querying for objects via API or the dashboard.

    Keys are strings with a maximum length of 64 characters. Values are strings
    with a maximum length of 512 characters.

  - `model: optional string`

    Model ID used to process the batch, like `gpt-6-astra`. OpenAI
    offers a wide range of models with different capabilities, performance
    characteristics, and price points. Refer to the [model
    guide](/api/docs/models) to browse and compare available models.

  - `output_file_id: optional string or null`

    The ID of the file containing the outputs of successfully executed requests.

  - `request_counts: optional BatchRequestCounts`

    The request counts for different statuses within the batch.

    - `completed: number`

      Number of requests that have been completed successfully.

    - `failed: number`

      Number of requests that have failed.

    - `total: number`

      Total number of requests in the batch.

  - `usage: optional BatchUsage`

    Represents token usage details including input tokens, output tokens, a
    breakdown of output tokens, and the total tokens used. Only populated on
    batches created after September 7, 2025.

    - `input_tokens: number`

      The number of input tokens.

    - `input_tokens_details: object { cached_tokens }`

      A detailed breakdown of the input tokens.

      - `cached_tokens: number`

        The number of tokens that were retrieved from the cache. [More on
        prompt caching](/api/docs/guides/prompt-caching).

    - `output_tokens: number`

      The number of output tokens.

    - `output_tokens_details: object { reasoning_tokens }`

      A detailed breakdown of the output tokens.

      - `reasoning_tokens: number`

        The number of reasoning tokens.

    - `total_tokens: number`

      The total number of tokens used.

- `has_more: boolean`

- `object: "list"`

  - `"list"`

- `first_id: optional string`

- `last_id: optional string`

### Example

```http
curl https://api.openai.com/v1/batches \
    -H "Authorization: Bearer $OPENAI_API_KEY"
```

#### Response

```json
{
  "data": [
    {
      "id": "id",
      "completion_window": "completion_window",
      "created_at": 0,
      "endpoint": "endpoint",
      "input_file_id": "input_file_id",
      "object": "batch",
      "status": "validating",
      "cancelled_at": 0,
      "cancelling_at": 0,
      "completed_at": 0,
      "error_file_id": "error_file_id",
      "errors": {
        "data": [
          {
            "code": "code",
            "line": 0,
            "message": "message",
            "param": "param"
          }
        ],
        "object": "object"
      },
      "expired_at": 0,
      "expires_at": 0,
      "failed_at": 0,
      "finalizing_at": 0,
      "in_progress_at": 0,
      "metadata": {
        "foo": "string"
      },
      "model": "model",
      "output_file_id": "output_file_id",
      "request_counts": {
        "completed": 0,
        "failed": 0,
        "total": 0
      },
      "usage": {
        "input_tokens": 0,
        "input_tokens_details": {
          "cached_tokens": 0
        },
        "output_tokens": 0,
        "output_tokens_details": {
          "reasoning_tokens": 0
        },
        "total_tokens": 0
      }
    }
  ],
  "has_more": true,
  "object": "list",
  "first_id": "batch_abc123",
  "last_id": "batch_abc456"
}
```

### Example

```http
curl https://api.openai.com/v1/batches?limit=2 \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: application/json"
```

#### Response

```json
{
  "object": "list",
  "data": [
    {
      "id": "batch_abc123",
      "object": "batch",
      "endpoint": "/v1/chat/completions",
      "errors": null,
      "input_file_id": "file-abc123",
      "completion_window": "24h",
      "status": "completed",
      "output_file_id": "file-cvaTdG",
      "error_file_id": "file-HOWS94",
      "created_at": 1711471533,
      "in_progress_at": 1711471538,
      "expires_at": 1711557933,
      "finalizing_at": 1711493133,
      "completed_at": 1711493163,
      "failed_at": null,
      "expired_at": null,
      "cancelling_at": null,
      "cancelled_at": null,
      "request_counts": {
        "total": 100,
        "completed": 95,
        "failed": 5
      },
      "metadata": {
        "customer_id": "user_123456789",
        "batch_description": "Nightly job"
      }
    }
  ],
  "first_id": "batch_abc123",
  "last_id": "batch_abc123",
  "has_more": false
}
```