Kling 3.0 Omni I2V API

POST /v1/tasks

All models are called through the Unified Async API POST /v1/tasks endpoint; only the input fields differ (see input parameters below).

Model summary

Model name	kling-3.0-omni/image-to-video
Type	Video generation (image-to-video)
Endpoint	POST /v1/tasks
Pricing	See HiAPI Pricing

Kling 3.0 Omni image-to-video API by Kuaishou Kling. Drive cinematic clips from a first frame (or first/last frame) image with native audio, at 720p / 1080p / 4K resolutions and 3-15 second durations.

Production guidance

For production, pass callback.url at the top level of the request body so HiAPI can notify your service when the task reaches a terminal state.
GET /v1/tasks/:id is better for local debugging, low-volume jobs, or fallback reconciliation if a callback is missed.
Use callback.when=final. Both success and fail are terminal states, so your service should deduplicate by taskId.

Best suited for

First-frame-driven clips

Generate motion video from a single first-frame image — style, composition, and subject come from the image. Great for animating static posters or illustrations.

image_urls

Image + prompt motion control

The first frame sets the scene; the prompt describes motion and camera moves to precisely steer the animation.

image_urlsprompt

First/last frame transition

Pass two images as first and last frames to generate a smooth transition between the two shots.

image_urls

Sound-on and high-resolution

Enable native audio and pick 720p / 1080p / 4K to fit placements from social to big screen (billed per second).

soundresolution

Request parameters

POST https://api.hiapi.ai/v1/tasks

# Create an async task — returns taskId immediately (generation runs async)
# Replace YOUR_API_KEY with your account API key
curl -X POST "https://api.hiapi.ai/v1/tasks" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kling-3.0-omni/image-to-video",
  "input": {
    "image_urls": [
      "https://static.hiapi.ai/example/input.jpg"
    ],
    "prompt": "Gentle waves roll in and the light sweeps slowly across the scene, cinematic motion",
    "resolution": "1080p",
    "duration": 5,
    "sound": false
  }
}'

import requests, json

# Business params — fields vary by model (see the model page)
payload = json.loads(r'''
{
  "model": "kling-3.0-omni/image-to-video",
  "input": {
    "image_urls": [
      "https://static.hiapi.ai/example/input.jpg"
    ],
    "prompt": "Gentle waves roll in and the light sweeps slowly across the scene, cinematic motion",
    "resolution": "1080p",
    "duration": 5,
    "sound": false
  }
}
''')

# Create an async task — returns taskId immediately (generation runs async)
resp = requests.post(
    "https://api.hiapi.ai/v1/tasks",
    headers={"Authorization": "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
    json=payload,
)
print(resp.json())  # Returns { code, message, data: { taskId } }

// Create an async task — returns taskId immediately (generation runs async)
// Replace YOUR_API_KEY with your account API key
const resp = await fetch("https://api.hiapi.ai/v1/tasks", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
  "model": "kling-3.0-omni/image-to-video",
  "input": {
    "image_urls": [
      "https://static.hiapi.ai/example/input.jpg"
    ],
    "prompt": "Gentle waves roll in and the light sweeps slowly across the scene, cinematic motion",
    "resolution": "1080p",
    "duration": 5,
    "sound": false
  }
}),
});
console.log(await resp.json()); // Returns { code, message, data: { taskId } }

model string required

Fixed value kling-3.0-omni/image-to-video.

example kling-3.0-omni/image-to-video

input object required

Business parameters. Put Kling 3.0 Omni I2V-specific configuration here.

image_urls string[] required

1-2 image URLs. 1 = first frame; 2 = [first, last] frame. JPEG/PNG/WEBP.

prompt string optional

Optional text prompt to guide the generated motion and style.

resolution enum optional

Output resolution. Higher resolution costs more.

default 1080p enum: 720p1080p4K

duration integer optional

Clip length in seconds (3-15). Cost scales with duration.

default 5

sound boolean optional

Generate synchronized audio (effects/ambience). Costs more when enabled.

default false

callback object optional

Optional callback configuration. When set, HiAPI notifies your service when the task reaches a terminal state.

url string required

Required when callback is set; HTTPS URL that receives terminal task notifications.

example https://your-domain.com/hiapi/callback

when enum optional

Callback trigger timing. Use final.

default final enum: final

Example requests

Bring a still to life

First-frame image + 1080p / 5s with native audio — turn one image into a sound-on clip.

Request body

{
  "model": "kling-3.0-omni/image-to-video",
  "input": {
    "image_urls": [
      "https://static.hiapi.ai/example/input.jpg"
    ],
    "prompt": "Gentle waves roll in, light sweeps slowly across the scene, cinematic motion",
    "resolution": "1080p",
    "duration": 5,
    "sound": true
  }
}

First/last frame transition

Two images as first and last frames, 720p / 5s — a smooth transition between shots.

Request body

{
  "model": "kling-3.0-omni/image-to-video",
  "input": {
    "image_urls": [
      "https://static.hiapi.ai/example/subject-1.jpg",
      "https://static.hiapi.ai/example/subject-2.jpg"
    ],
    "resolution": "720p",
    "duration": 5,
    "sound": false
  }
}

4K high-resolution animation

First-frame image + 4K / 5s ultra-high-resolution clip for big screens and HD delivery.

Request body

{
  "model": "kling-3.0-omni/image-to-video",
  "input": {
    "image_urls": [
      "https://static.hiapi.ai/example/input.jpg"
    ],
    "prompt": "Slow camera push-in, clouds drifting, shifting light, cinematic",
    "resolution": "4K",
    "duration": 5,
    "sound": false
  }
}

Getting the result

The response returns a taskId immediately without waiting for generation to finish.
In production, prefer waiting for callback.url to receive the terminal notification. For local debugging, poll GET /v1/tasks/:id.
When status=success, download the generated video from output[].url.
When status=fail, fix the request based on the returned error instead of retrying the same invalid payload.

FAQ

How do I pass images, and how many?

image_urls is an array of image URLs: one image is the first frame; two images are [first, last] frames for a transition. JPEG / PNG / WEBP are supported.

Which resolutions and durations does Kling 3.0 Omni image-to-video support?

Resolutions 720p / 1080p / 4K and durations 3-15 seconds (default 5). Pricing is billed by resolution, duration (per second), and whether native audio is enabled; 4K costs the most and sound-on tiers cost more. See the live pricing page for current rates.

How do I get the generated video?

The response returns a taskId immediately. When the task reaches a terminal state, download the video from output[].url. In production, pass callback.url at the top level to receive terminal notifications and avoid polling.

Does it support text-to-video?

This model requires a first-frame image. For text-only generation, use kling-3.0-omni/text-to-video.

Kling 3.0 Omni I2V API

Model summary

Production guidance

Best suited for

Request parameters

Example requests

Getting the result

FAQ

How do I pass images, and how many?

Which resolutions and durations does Kling 3.0 Omni image-to-video support?

How do I get the generated video?

Does it support text-to-video?

Next steps