> ## 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 Standard

> Kling · `kling-o3-standard` · video

## Identifier

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

## Capabilities

| Property            | Value                                                                               |
| ------------------- | ----------------------------------------------------------------------------------- |
| Reference inputs    | 0–1                                                                                 |
| Aspect ratios       | `16:9`, `9:16`, `1:1` (default `9:16`)                                              |
| Durations (seconds) | `3`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15` (default `5`) |
| Audio               | yes                                                                                 |
| Max prompt length   | 2500 chars                                                                          |

## Inputs

Pass reference media in the `references` array (0–1 item). Optional. Each item accepts exactly one of:

* `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 |
| --------------- | ------- | ------- | ------------ |
| `generateAudio` | boolean | `true`  | yes          |

## Pricing

Default parameters (5s): **\~11.5 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-standard",
  "prompt": "Describe what you want to generate",
  "aspect_ratio": "9:16",
  "duration": 5
}
```

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