Kling 3.0 Pro API and Pricing, Explained Through a Real Pipeline
Kling 3.0 Pro publishes two per-second rates, one silent and one with audio, and a Standard tier that costs a quarter less on the same parameter surface. Here is the rate card, the checkbox that moves your bill the most, what the endpoint takes, and how to reach the model as a versioned API endpoint.
Kling 3.0 Pro is Kuaishou's flagship video model, and its pricing is refreshingly short. There is one rate per second for a silent clip and one for a clip with audio. Resolution does not change the price, because the endpoint renders a single resolution. So the cost of a clip is the rate times the seconds, and the only real decision is whether you want sound.
Kling 3.0 also ships in a Standard tier that takes the same parameters for a quarter less. This post covers what both tiers cost, the checkbox that moves your bill most, what the endpoint accepts, and how to call Kling 3.0 Pro as a published API endpoint. Every parameter and price below is read off Treza's live video model catalog as of September 2026.
What you get before you talk about price
| Capability | Kling 3.0 Pro |
|---|---|
| Clip length | 3 to 15 seconds, every whole second |
| Resolution | 720p |
| Aspect ratios | 16:9, 9:16, 1:1 |
| Native audio | Yes, with an on and off switch |
| Keyframes | First frame and last frame |
| Reference images | No, not on this endpoint |
Thirteen duration options is the standout row. Veo 3.1, by comparison, renders exactly 4, 6, or 8 seconds, so a shot has to be padded or trimmed to fit that grid. Kling renders any whole second from 3 to 15, which means a shot can match the narration line it sits under.
What Kling is good at, in our own editorial positioning rather than a benchmark, is people moving: dance, sport, stunt work, and characters whose face and wardrobe hold steady through fast action. Full capability detail lives on the Kling 3.0 Pro model page.
How Kling 3.0 bills
Per second of output, at a rate set by the tier and by whether audio is on:
| Tier | Silent, per second | With audio, per second |
|---|---|---|
| Kling 3.0 Pro | $0.112 | $0.168 |
| Kling 3.0 Standard | $0.084 | $0.126 |
A 10 second Pro clip with audio is $1.68 of provider cost, and the same clip silent is $1.12. At the 15 second ceiling, Pro with audio is $2.52.
The catalog lists price lines for 480p, 720p, and 1080p, but they all carry the same number and the endpoint renders 720p. So unlike Hailuo 3 or Veo 3.1, there is no resolution lever. The two levers are the audio switch and the tier.
The audio checkbox is the biggest lever
On Kling 3.0, audio costs half again the silent rate. On Pro that is 5.6 cents a second on top of 11.2, so the switch alone decides a third of the bill on every clip that has it on.
The Video Generation node shows a Generate audio checkbox for models with native audio, and it starts checked. That is right when the model's own sound ships with the clip. It is wrong when the clip will be narrated or scored later in the graph, because that audio gets replaced and you paid for it anyway.
Our rule: if a Text to Speech node or a music bed sits downstream, turn Kling's audio off. A narrated faceless Short at 12 seconds a shot saves 67 cents of provider cost per shot by unchecking one box.
Pro or Standard
Kling 3.0 Standard and Pro take the same inputs on the endpoint we run: the same 3 to 15 second range, aspect ratios, keyframes, 720p output, and audio switch. Price is the only row that differs, and Standard costs three quarters of Pro at both audio settings.
We do not publish a quality benchmark between the two, and we will not invent one here. Whether Standard is good enough depends on the shot, and the honest test is to run the same prompt on both and look. Switching is one dropdown on the node, and a pair of 5 second silent test clips costs under a dollar of provider time combined.
A pattern that fits the price gap: draft framings on Standard with audio off at 8.4 cents a second, then render the keeper on Pro. Because both tiers share the duration grid and the keyframe inputs, a prompt and frame pair that works on Standard re-renders on Pro without changing the shot length.
What you actually pay on Treza
Kling 3.0 through a Treza pipeline is metered from a prepaid credit balance. One credit equals $0.01, credit packs start at $5, credits never expire, and there is no subscription. A failed generation charges nothing.
Before a run starts, the platform estimates the media cost of the graph and refuses to start one your balance cannot cover. For Kling 3.0 Pro the estimator holds 16.8 cents of provider cost per second, the with-audio rate, and for Standard it holds 12.6. With audio on, that hold is essentially what the clip costs. With audio off, the hold sits about half again above the real cost until the run settles, and the difference returns to the balance. Reserves are holds, not prices.
For budgeting across the catalog, the figure on the pricing page is $1.06, the median charge for one video generation. The cost breakdown post walks a finished video end to end.
What the endpoint will and will not take
On the endpoint we run, you send a prompt, a duration, an aspect ratio, the audio setting, and optionally a first frame image, a last frame image, or both. Give it a first frame and it animates out of that still. Give it both and it generates the motion between two exact frames, which is how you open on brand art and land on a product shot. The first frame technique post covers checking that still before you pay for the video, and the image to video generator covers the job from the still's side.
It does not accept multi-image reference inputs, the kind that carry a character's identity from separate photos into a new shot. If you need that, Seedance 2.0, Seedance 1.5 Pro, and Wan 2.7 take them. With Kling, consistency across shots comes from the keyframes: generate the still once, then hand it to each shot as its first frame.
It also stops at 720p. For phone-first vertical work that costs nothing. For a hero shot shown large, run the clip through Video Upscale to 1080p, or render that shot on Veo 3.1, which reaches 4K. The Veo 3.1 versus Kling 3.0 Pro post compares the two parameter by parameter.
Kling Video O1 and Motion Transfer
Kling Video O1 is the volume pick in the family: 5 or 10 seconds only, 720p, native audio, first and last keyframes, and negative prompts, at 11.2 cents per second. For a fixed 5 or 10 second slot on a daily schedule it is the economical default. When the brief is bodies in fast motion or an awkward length like 7 or 13 seconds, reach for 3.0 Pro. The Kling name also appears on the Motion Transfer node, which drives a character image with a recorded performance. That is a separate node and a separate job.
Calling Kling 3.0 Pro as an API without building the integration
Direct API access to a video model is never one HTTP call. It is credentials, a submit-and-poll job pattern, retries, moderation rejections, and somewhere to store the output.
On a Treza AI video pipeline, Kling 3.0 Pro is a node on a canvas. Set the duration, aspect ratio, and audio switch, wire it next to a script step, a voiceover step, or a captioning step, and publish the whole chain as one versioned endpoint. Your application calls a typed /invoke route with JSON in and JSON out, or points an existing OpenAI SDK at the OpenAI-compatible route.
The swap is what pays off later. When the next model wins the leaderboard, you change the dropdown and republish, and the endpoint your product calls does not change. Check that the new model supports your node's duration, since Kling's 3 to 15 second grid is wider than many. Our hosted MCP server exposes the same pipelines as tools, so rendering a brief on Kling and returning the link is something an agent carries out rather than describes.
Where Kling 3.0 Pro earns its place in a graph
Three jobs, from our own pipelines. Narrated shots in a faceless video pipeline, where the length of a shot should follow the length of the line and Kling's every-second grid makes that one setting. Action beats in short vertical cuts, dance, sport, and stunts, where 720p is all a phone uses. And square placements, where 1:1 is a dropdown rather than a crop.
The fastest way to answer what it costs for your own work is to run your real prompt at your real duration and read the charge. Open the AI video generator, pick Kling 3.0 Pro, set the audio switch the way the clip will actually ship, and generate once.
Frequently Asked Questions
How much does Kling 3.0 Pro cost per second?
Kling 3.0 Pro is $0.112 per second silent and $0.168 per second with audio, as published for the endpoint we run as of September 2026. Resolution does not change the rate. On Treza that is charged from a prepaid credit balance, and a failed generation charges nothing.
How much cheaper is Kling 3.0 Standard than Pro?
A quarter cheaper at both audio settings: $0.084 per second silent and $0.126 with audio. The two tiers take the same durations, aspect ratios, keyframes, and audio switch on the endpoint we run, so switching between them is one dropdown and nothing else in the graph changes.
What is the longest clip Kling 3.0 Pro can generate?
Fifteen seconds in a single generation, at any whole number of seconds from 3 to 15. For longer pieces, stitch generations with the Sequence node, which handles up to 12 shots, or assemble them in the timeline editor.
Does Kling 3.0 Pro support 1080p or 4K?
Not on the endpoint we run, which renders 720p. For a shot that will be shown large, run the finished clip through Video Upscale to 1080p, or render that shot on Veo 3.1, which reaches 4K.
Why does my credit balance reserve more than the clip costs?
The estimator holds the with-audio rate for the model, 16.8 cents per second of provider cost for Pro, so a run can never start that the balance cannot finish. With audio off the clip costs less than the hold, and the difference returns to the balance when the run settles.
Can I call Kling 3.0 Pro through an API without a Kuaishou account?
Yes. On a Treza pipeline, Kling 3.0 Pro is a node you configure once and publish as a versioned HTTP endpoint, with a typed /invoke route and an OpenAI-compatible route. A hosted MCP server exposes the same pipelines as tools for agents. There is no subscription: generations are metered from prepaid credits that start at $5 and never expire.
