Kling O1 API
Kling O1 from $0.24/sec — reasoning-led video generation for complex, multi-beat prompts.
Kling's reasoning-led video model. Interprets complex prompts before rendering, producing 5 or 10 second clips at 720p with audio and keyframe control — from $0.24 per second.
No credit card required. Takes 30 seconds.
Kling O1 API pricing
Pay per request from your YepAPI balance — no subscription, no monthly minimum. Prices updated July 31, 2026.
| Billing | Price |
|---|---|
| Rate (720p) | $0.24/sec |
| What it costs | Per job |
|---|---|
| 5-second clipfrom lowest resolution | $1.20 |
| 10-second clipfrom lowest resolution | $2.40 |
| 100 × 5-second clipsan ad-creative batch | $120.00 |
2,400+
Developers
1.2M+
API calls served
100+
Endpoints
$0.01
Per call
Yep, that's it.
Try it live
Enter a prompt and generate a video with Kling O1.
Drop image or click to upload
For image-to-video (first/last frame)
Kling O1 specs
| Provider | Kling |
|---|---|
| Model ID | kwaivgi/kling-video-o1 |
| Endpoint | /v1/media/queue |
| Type | Video Generation |
| Resolutions | 720p |
| Aspect ratios | 16:9, 9:16, 1:1 |
| Durations | 5, 10 seconds |
| Audio | Generated with the video |
| Image input | Yes |
How to get a Kling O1 API key
- 1
Create a free account
Sign up at yepapi.com with Google or email. It takes about 30 seconds and needs no card.
- 2
Create an API key
Open the dashboard, go to API Keys and create a key. Copy it — it starts with yep_sk_.
- 3
Call Kling O1
Send a request to /v1/media/queue with the x-api-key header and model "kwaivgi/kling-video-o1".
- 4
Pay as you go
Usage is billed per request from your balance. Top up any amount; there is no subscription.
Strengths
The O1 line plans the shot from the prompt, which helps on briefs with sequence, causality, or specific staging.
Multi-beat descriptions — an action, then a reaction — survive into the generated clip more often.
Two fixed durations at 720p in 16:9, 9:16, or 1:1.
Optional synced audio plus first/last-frame conditioning for controlled starts and endings.
Quick start
Copy this snippet and start making calls with Kling O1.
// Step 1: Submit job
const res = await fetch('https://api.yepapi.com/v1/media/queue', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({
"model": "kwaivgi/kling-video-o1",
"prompt": "A domino chain topples across a wooden table, knocking over the last piece which tips a small bell — camera tracks alongside at table height, soft daylight",
"options": {
"aspectRatio": "16:9",
"resolution": "1080p",
"duration": "6"
}
}),
});
const { data } = await res.json();
const jobId = data.jobId;
// Step 2: Poll for result
const status = await fetch(`https://api.yepapi.com/v1/media/status/${jobId}`, {
headers: { 'x-api-key': 'YOUR_API_KEY' },
});
const { data: job } = await status.json();
// job.status: "pending" | "processing" | "completed" | "failed"
// job.result: { text?, image?, audio?, video? }Kling O1 vs similar models
Every model below runs on the same API key — switch by changing the model ID.
| Model | Provider | Price |
|---|---|---|
| Kling O1 | Kling | from $0.24/sec (720p) |
| Kling 3.0 Standard | Kling | from $0.18/sec (720p, audio +50%) |
| Kling 3.0 Pro | Kling | from $0.24/sec (720p, audio +50%) |
| Seedance 1.0 Pro Fast | ByteDance | from about $0.02/sec (480p), about $0.04/sec (720p), about $0.10/sec (1080p) |
| Grok Imagine Video 1.5 Lite | xAI | from $0.04/sec (480p) |
| HeyGen Video | HeyGen | from $0.04/sec (480p) |
| Seedance 1.0 Pro | ByteDance | from about $0.05/sec (480p), about $0.10/sec (720p), about $0.24/sec (1080p) |
| Seedance 2.0 Mini | ByteDance | from about $0.07/sec (480p) |
Why use Kling O1 through YepAPI?
Kling O1 API — reasoning-led AI video generation
Kling O1 is the reasoning-oriented member of Kling's video lineup. Rather than rendering straight from the prompt, it interprets the brief first, which pays off when a shot has a sequence of events or specific staging.
Through YepAPI it generates 5 or 10 second 720p clips on `/v1/media/queue` at about $0.24 per second, with optional audio and keyframe control.
Start generating in 30 seconds
$5 free credit on signup. No credit card required. Pay per call.
What developers say
“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Frequently asked questions
Kling's reasoning-led video model. Interprets complex prompts before rendering, producing 5 or 10 second clips at 720p with audio and keyframe control — from $0.24 per second.
Kling O1 costs from $0.24/sec (720p) through YepAPI, billed per request with no monthly fee. For example, a 5-second clip (from lowest resolution) costs about $1.20.
Sign up at yepapi.com (Google or email, about 30 seconds), open the dashboard and create an API key. The same key works for Kling O1 and every other model — no separate Kling account or waitlist.
New YepAPI accounts in most countries get free signup credit, enough to test Kling O1 without a card. After that you pay per request at the rates above — there is no subscription.
Use "kwaivgi/kling-video-o1" as the model on /v1/media/queue. The short alias "kling-o1" also works.
Ready to use Kling O1?
$5 free credit on signup. No credit card required. Pay per call.
Explore more models
Kling 3.0 Standard
KlingKling 3.0 Standard from $0.18/sec — the value tier of Kling's video family, same features as Pro.
Kling 3.0 Pro
KlingKling 3.0 Pro video generation from $0.24/sec — 3–15 second clips with audio and keyframe control.
Seedance 1.5 Pro
ByteDanceSeedance 1.5 Pro from $0.46/sec — premium ByteDance video with synced audio and keyframe control.
Runway Gen-4.5
RunwayRunway Gen-4.5 from $0.25/sec — cinematic AI video via REST, billed per second with no monthly plan.
Seedance 2.5
ByteDanceSeedance 2.5 from about $0.22/sec — ByteDance video up to 30 seconds with audio and keyframe control.
FLUX 3 Video
Black Forest LabsFLUX 3 Video from $0.36/sec — Black Forest Labs video up to 4K with keyframe control.
More Video Generation models
- Wan 2.6 API · Alibaba
- Grok Imagine Video 1.5 API · xAI
- Wan 2.7 API · Alibaba
- Hailuo 3 Max API · MiniMax
- HappyHorse 1.0 API · Alibaba
- HappyHorse 1.1 API · Alibaba
- Veo 3.1 Lite API · Google
- Seedance 2.0 Mini API · ByteDance
- Veo 3.1 API · Google
- Runway Aleph 2 API · Runway
- HeyGen Video API · HeyGen
- Hailuo 2.3 API · MiniMax