Kling 3 Pro Motion Control API: fal.ai's video-generation model, one key away
Kling 3 Pro Motion Control via the ApexApi gateway
Kling 3 Pro driven by a reference video: the motion comes from your clip, the subject from your image. Both the image and the driving video need a visible human upper body or the request is rejected. Call it through ApexApi's unified, OpenAI-compatible API with one `ak-` key, alongside every other model in the catalog. Pricing is $0.151–$0.202/sec per second, billed pay-per-use from your credit balance with no subscription.
Kling 3 Pro Motion Control is served through ApexApi's unified, OpenAI-compatible API. One key, one format, with smart routing and automatic failover. Provider: fal.ai.
Why Kling 3 Pro Motion Control
AI video generation
Text-to-video (and image-to-video where supported) via a simple async job.
Per-second pricing ($0.151–$0.202/sec)
Pay only for what you generate from your credit balance. No subscription.
OpenAI-compatible
Drop-in with any OpenAI SDK. Change the base URL and key, keep your code.
Specifications
- Modality
- video
- Context window
- —
- Max output
- —
- Streaming
- Yes
- Tool / function calling
- —
- Vision input
- —
Kling 3 Pro Motion Control pricing
- It runs 1.7× cheaper than Kling 2.0 Master Text-to-Video, the pricier option from the same maker.
Getting started with Kling 3 Pro Motion Control
OpenAI-compatible. Point your client at ApexApi, swap your key, and call it. No new SDK to learn.
import requests, time
job = requests.post(
"https://api.apexapi.dev/v1/videos/generations",
headers={"Authorization": "Bearer <YOUR_APEXAPI_KEY>"},
json={"model": "kuaishou/kling-video/v3/pro/motion-control", "prompt": "A drone shot over a neon city at night", "duration": 5},
).json()
# Poll until the async job completes
while True:
res = requests.get(
f"https://api.apexapi.dev/v1/videos/generations/{job['id']}",
headers={"Authorization": "Bearer <YOUR_APEXAPI_KEY>"},
).json()
if res["status"] in ("completed", "failed"):
print(res)
break
time.sleep(3)Kling 3 Pro Motion Control use cases
What teams build with Kling 3 Pro Motion Control on ApexApi.
Short-form content
Generate clips for social, ads, and marketing.
Product & explainer
Turn prompts or images into motion for launches and demos.
Creative prototyping
Explore video concepts fast before a full production.
Kling 3 Pro Motion Control vs other models
How it compares, and on ApexApi you can switch between any of them with a single string change, same key, same endpoint.
Kling 3 Pro Motion Control vs Veo 3.1
Compare Kling 3 Pro Motion Control against this model on price, capabilities, and latency. A/B them with a single key on ApexApi.
Learn more about Veo 3.1 API →Kling 3 Pro Motion Control vs Seedance 2.0
Compare Kling 3 Pro Motion Control against this model on price, capabilities, and latency. A/B them with a single key on ApexApi.
Learn more about Seedance 2.0 API →Kling 3 Pro Motion Control API: FAQ
How do I call Kling 3 Pro Motion Control through ApexApi?
Create an ApexApi key, point your client at https://api.apexapi.dev/v1, and POST to /v1/videos/generations with the model set to `kuaishou/kling-video/v3/pro/motion-control`. The API is OpenAI-compatible, so an existing OpenAI SDK works once you change the base URL and key.
How much does Kling 3 Pro Motion Control cost on ApexApi?
$0.151–$0.202/sec, billed per second with no subscription or minimum. The exact figure is shown before you generate, so nothing is charged against a price you have not seen.
What do I send to Kling 3 Pro Motion Control?
This variant takes a source image and a driving video whose motion is copied onto it. The other variants of the same model accept different inputs, so pick the slug that matches what you already have.
What should I use instead of Kling 3 Pro Motion Control?
From the same maker, Kling o3 Pro costs less for lighter work and Kling 2.0 Master Text-to-Video is the step up when this one falls short. Switching is one string: both run on the same endpoint and the same key, so there is nothing to re-integrate.
Ready to build with Kling 3 Pro Motion Control?
One API key. Every major AI model. Pay only for what you use.
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