> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hoox.video/llms.txt
> Use this file to discover all available pages before exploring further.

# Kling O3 Edit Pro

> Kling · `kling-o3-edit-pro` · video

## Identifier

Use the model identifier `kling-o3-edit-pro` in the `model` field when calling [`/asset/start`](/api-reference/assets/start).

## Capabilities

| Property          | Value        |
| ----------------- | ------------ |
| Reference inputs  | 1            |
| Input types       | `video`      |
| Audio             | yes          |
| Max prompt length | 2500 chars   |
| Tags              | `video-edit` |

## Inputs

This model takes **named media inputs**. Pass each one as a top-level field in the request body (not inside `references`). Each field accepts exactly one of `url`, `asset_id`, or `avatar_id`.

| Field          | Type  | Required | Description                                                     |
| -------------- | ----- | -------- | --------------------------------------------------------------- |
| `source_video` | video | yes      | Video to edit. The prompt describes the modifications to apply. |

* `url` — a direct, publicly accessible file URL
* `asset_id` — the ID of an existing asset in your Hoox space (e.g. a previous generation)
* `avatar_id` — the ID of an avatar defined in your Hoox space

## Custom settings

These keys go inside the `model_settings` object of the request body.

| Key         | Type    | Default | Affects cost |
| ----------- | ------- | ------- | ------------ |
| `keepAudio` | boolean | `true`  | no           |

## Pricing

Default parameters: **\~34 credits / generation**.

For exact pricing with your own parameters, call [`/asset/pricing`](/api-reference/assets/pricing) with the `model` and any parameters that affect cost.

## Example request

```json theme={null}
{
  "type": "video",
  "model": "kling-o3-edit-pro",
  "prompt": "Describe what you want to generate",
  "source_video": {
    "url": "https://example.com/reference.mp4"
  }
}
```

See [`/asset/start`](/api-reference/assets/start) for the full request/response reference, error codes, and code samples in cURL / Python / JavaScript.