# Kling 2.6 API

> Kling 2.6 — high-quality AI video generation.

- **Provider**: Kling
- **Model id**: `kling-2-6-image-to-video`
- **Modality**: video
- **Price**: 32.21–128.85 credits

## Overview

Kling 2.6 is called in two steps: create a generation task, then poll the task until the result is ready.

## Authentication

All requests require a Bearer Token in the request header:

```
Authorization: Bearer YOUR_API_KEY
```

## Create Task

`POST https://you.bot/api/v1/generate`

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| modelId | string | Yes | Model id: `kling-2-6-image-to-video` |
| input | object | Yes | Input parameters object (see below) |
| callbackUrl | string | No | https URL we POST the finished task to. Signed with `X-Webhook-Signature` once you create a webhook signing key in Dashboard → Settings |

### input object parameters

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| prompt | string | Yes | The text prompt used to generate the video Max 2500 characters. (example: Animate the still: a scoop of ice cream slowly melts down a waffle cone, a single drip sliding toward the fingertips as warm afternoon light glows behind it… — full value in the request example) |
| image_urls | string[] | Yes | The URL of the image used to generate video (image URL) |
| sound | boolean | Yes | This parameter is used to specify whether the generated video contains sound (true/false) (default: false) |
| duration | string | Yes | Duration of the video in seconds (options: 5 \| 10) (default: 5) |

### Request example

```json
{
  "modelId": "kling-2-6-image-to-video",
  "input": {
    "prompt": "Animate the still: a scoop of ice cream slowly melts down a waffle cone, a single drip sliding toward the fingertips as warm afternoon light glows behind it and the camera drifts gently closer.",
    "image_urls": [
      "https://you.bot/examples/grok-imagine-text-to-image.jpg"
    ],
    "sound": false,
    "duration": "5"
  }
}
```

### Response example

```json
{
  "taskId": "281e5b0…f39b9",
  "creditsCharged": 32.21
}
```

## Query Task

`GET https://you.bot/api/v1/task/{taskId}?model=kling-2-6-image-to-video`

When `state` is `success`, the output is in `resultUrls`: `{ "state": "success", "resultUrls": [ ... ] }`. (Text models return inline in the create response.)

## Error Codes

| Code | Description |
|------|-------------|
| 200 | Request successful |
| 400 | Invalid request parameters |
| 401 | Authentication failed — check API Key |
| 402 | Insufficient account balance |
| 403 | IP not allowed for this key, or the key is restricted to other models |
| 404 | Task not found, or it has expired |
| 409 | Duplicate request — an identical submit arrived moments ago. Nothing was charged; retry is safe |
| 413 | Payload too large — see the character and file-size limits for this model |
| 429 | Rate limit exceeded — retry after the Retry-After header |
| 500 | Internal server error |
| 504 | Upstream timed out — nothing was delivered; retry is safe |