Kling 2.1 Video

Kuaishou Kling 2.1 — image-to-video specialist. Animates a start frame into 5 or 10 seconds.

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Videokuaishou/kling-2.1-video$0.00 / 1M in

Base URL

https://api.zekron.tech/api/v1

Supported modes

image-to-video

Parameters

Pass these inside the input object when creating a task.

Field	Required
prompt	required
start_frame_url	required
end_frame_url	optional
duration	optional
mode	optional
sound_effects	optional

promptrequired

start_frame_urlrequired

end_frame_urloptional

durationoptional

modeoptional

sound_effectsoptional

Example request

bash

curl -X POST https://api.zekron.tech/api/v1/tasks \
  -H "Authorization: Bearer zk_live_xxx" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kuaishou/kling-2.1-video",
  "input": {
    "prompt": "a cinematic shot of a lighthouse at golden hour",
    "start_frame_url": "...",
    "duration": 5,
    "mode": "std"
  }
}'

Example response

json

{
  "id": "zk_task_8f3a2b1c9d",
  "model": "kuaishou/kling-2.1-video",
  "status": "processing",
  "created_at": "2026-06-10T12:00:00Z"
}

Poll GET https://api.zekron.tech/api/v1/tasks/{id} until status is success or failed.

Pricing

This model is billed at $0.00 / 1M in. You are only charged for successful generations — failed tasks are never billed. Generated outputs are retained for 30 days before they expire.