Kling API v1 updates:

  • New POST videos/omni endpoint for Video O1 (Omni) generation
  • Supports text-to-video and up to 7 reference images (or 1 video + 4 images) via @image_1…@image_7, @video_1 placeholders
  • Duration options: 3-10 seconds (7-10 require VIP)
  • Aspect ratio options: 16:9, 9:16, 1:1, auto (auto when video reference used)

Text-to-Video

curl -X POST "https://api.useapi.net/v1/kling/videos/omni" \
  -H "Authorization: Bearer user:12345-…" \
  -H "Content-Type: application/json" \
  -d '{
    "email": "[email protected]",
    "prompt": "Tiny fairy mechanic fixing a broken butterfly wing with welding torch, macro photography style",
    "duration": "5",
    "aspect_ratio": "16:9"
  }'

Result:

Reference Images to Video

Use @image_1, @image_2, etc. placeholders to reference uploaded images in your prompt. Upload reference images using POST /assets first.

Reference images: Cow girl • BMW R32 Motorcycle

curl -X POST "https://api.useapi.net/v1/kling/videos/omni" \
  -H "Authorization: Bearer user:12345-…" \
  -H "Content-Type: application/json" \
  -d '{
    "email": "[email protected]",
    "prompt": "@image_1 dressed like a heavy metal rock star riding her motorcycle @image_2 under the Golden Gate bridge, dynamic action scene",
    "duration": "10",
    "aspect_ratio": "16:9",
    "image_1": "https://s21-kling.klingai.com/…/cow_girl.jpg",
    "image_2": "https://s21-kling.klingai.com/…/bmw_r32.jpg"
  }'

Result:

Video + Image Reference

Combine a video reference with image references. When video_1 is provided, aspect_ratio is automatically set to auto. Maximum 4 images can be used alongside a video reference.

Input Video 
curl -X POST "https://api.useapi.net/v1/kling/videos/omni" \
  -H "Authorization: Bearer user:12345-…" \
  -H "Content-Type: application/json" \
  -d '{
    "email": "[email protected]",
    "prompt": "On the @video_1 replace coke can with @image_1",
    "video_1": "https://s21-kling.klingai.com/…/coke-ad.mp4",
    "image_1": "https://s21-kling.klingai.com/…/redbull.jpg"
  }'

Result: