> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-7021d5f4.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ImageGenCallPartialImageEvent - Python SDK

> ImageGenCallPartialImageEvent method reference

<Warning>
  The Python SDK and docs are currently in beta.
  Report issues on [GitHub](https://github.com/OpenRouterTeam/python-sdk/issues).
</Warning>

Image generation call with partial image

## Fields

| Field                 | Type                                                                                                                           | Required             | Description |
| --------------------- | ------------------------------------------------------------------------------------------------------------------------------ | -------------------- | ----------- |
| `item_id`             | *str*                                                                                                                          | :heavy\_check\_mark: | N/A         |
| `output_index`        | *int*                                                                                                                          | :heavy\_check\_mark: | N/A         |
| `partial_image_b64`   | *str*                                                                                                                          | :heavy\_check\_mark: | N/A         |
| `partial_image_index` | *int*                                                                                                                          | :heavy\_check\_mark: | N/A         |
| `sequence_number`     | *int*                                                                                                                          | :heavy\_check\_mark: | N/A         |
| `type`                | [components.ImageGenCallPartialImageEventType](/client-sdks/python/api-reference/components/imagegencallpartialimageeventtype) | :heavy\_check\_mark: | N/A         |