Kling 4.0 Price: 30-Second Clips With Sound at 720p for Less Than Kling 3.0 Pro
RenderHour · October 26, 2026 · 7 min read
In short
- Kling 4.0 costs 11.25 credits a second at 720p on RenderHour, less than Kling 3.0 in Pro mode with sound at 12, and it runs one take for up to 30 seconds, twice Kling 3.0’s 15.
- A 5-second vertical clip is 56.25 credits at 720p or 82.5 at 1080p. On Plus billed yearly that is about $2.20 and $3.23 by our arithmetic.
- It starts from a prompt, a first frame with an optional last frame, or up to 10 reference images, in 16:9, 9:16, 1:1 or 21:9. It went on sale here on October 26, 2026.
The newest Kling can cost less a second than the old one. Kling 4.0 at 720p is 11.25 credits a second on RenderHour, against 12 for Kling 3.0 in Pro mode with sound, and it holds one take for up to 30 seconds instead of 15. At 1080p it is 16.5 credits a second. Below are the prices per clip, the settings, how it compares with Kling 3.0 and Seedance 2.5, and 2 clips we made with it this morning.
What is Kling 4.0?
Kling 4.0 is the newest video model from Kuaishou’s Kling AI. Kuaishou announced on October 19, 2026 that it launched on October 15, with native generation of up to 30 seconds in a single pass and support for up to 15 reference assets and up to 10 keyframe inputs.
fal, the supplier RenderHour runs it through, describes Kling 4.0 as making video at 720p or 1080p, 3 to 30 seconds long, from text, from a start image with an optional end frame, or from image and video references. Its API for the model opened in late October, and RenderHour put the model on sale on October 26 after a test run came back as a 3-second 1280×720 clip at 24 fps with a sound track.
How much does Kling 4.0 cost?
You pay per second of video, at one of 2 resolutions. The exact price is on the Generate button before you start, and a failed run costs nothing.
| Length | 720p | 1080p | 720p on Plus yearly | 1080p on Plus yearly |
|---|---|---|---|---|
| 3 seconds (shortest) | 33.75 credits | 49.5 credits | $1.32 | $1.94 |
| 5 seconds | 56.25 credits | 82.5 credits | $2.20 | $3.23 |
| 10 seconds | 112.5 credits | 165 credits | $4.41 | $6.46 |
| 15 seconds | 168.75 credits | 247.5 credits | $6.61 | $9.69 |
| 30 seconds (longest) | 337.5 credits | 495 credits | $13.22 | $19.39 |
Source: RenderHour price list: 11.25 credits a second at 720p, 16.5 at 1080p. Dollars by our arithmetic on Plus billed yearly, $564 a year for 1,200 credits a month, about 3.9 cents a credit.
For reference, fal lists Kling 4.0 at $0.157 a second at 720p and $0.235 at 1080p on its own API. That is $9.42 and $14.10 for a full minute by our arithmetic.
What settings does Kling 4.0 have here?
- Length: any whole number of seconds from 3 to 30. Most models on RenderHour stop at 10 or 15.
- Resolution: 720p or 1080p. The model page starts on 1080p, so switch to 720p for drafts.
- Shape: 16:9, 9:16, 1:1, and 21:9, the widescreen frame of film trailers. It is the only video model on RenderHour with 21:9.
- Inputs: a prompt alone, a first frame with an optional last frame, or up to 10 reference images that you name in the prompt as @Image1, @Image2 and so on.
- Sound: clips come with a sound track. There is no switch to turn it off, unlike Kling 3.0.
- Not here yet: reference videos and per-shot prompts. fal bills a reference video on its own seconds as well as the output’s, which a price per second of output cannot follow.
Kling 4.0 vs Kling 3.0 vs Seedance 2.5: which costs less?
| Model and setting | Credits a second | 5-second clip | Length | Reference images | 21:9 |
|---|---|---|---|---|---|
| Kling 4.0 720p | 11.25 | 56.25 | 3–30 s | Up to 10 | Yes |
| Kling 4.0 1080p | 16.5 | 82.5 | 3–30 s | Up to 10 | Yes |
| Kling 3.0 Standard, sound | 9 | 45 | 3–15 s | None | No |
| Kling 3.0 Pro, sound | 12 | 60 | 3–15 s | None | No |
| Kling 3.0 Pro, no sound | 8 | 40 | 3–15 s | None | No |
| Kling 3.0 4K | 29.5 | 147.5 | 3–15 s | None | No |
| Seedance 2.5 480p | 15.5 | 77.5 | 4–30 s | Up to 12 | No |
| Seedance 2.5 720p | 33.5 | 167.5 | 4–30 s | Up to 12 | No |
| Seedance 2.5 1080p | 82 | 410 | 4–30 s | Up to 12 | No |
Source: RenderHour price list and model catalogue.
Against Kling 3.0, the new model costs a little less a second than Pro with sound and adds 30-second takes, reference images and 21:9. Kling 3.0 still wins on the cheapest silent clip, 8 credits a second in Pro, and is the one to pick for 4K. The Kling 4.0 vs Kling 3.0 page sets the 2 side by side.
Against Seedance 2.5, the other model here that makes 30-second clips from reference images, Kling 4.0 at 720p costs about a third of Seedance 2.5 at 720p (11.25 against 33.5 credits a second), and 1080p costs about a fifth (16.5 against 82). Seedance 2.5 takes up to 12 reference images and offers 480p. See Kling 4.0 vs Seedance 2.5.
What do Kling 4.0 clips look like?
We made 2 clips at 720p, the cheapest setting, on October 26, 2026: a vertical drink shot of the kind brands post on Reels and TikTok, and a 3-second 21:9 travel shot to show the widescreen frame. They are not edited beyond compression for the web, and play without sound here.
What we see: the cold brew clip is not one orbiting shot, as the prompt asks, but 4 cuts in 5 seconds: a wide shot as the ice drops, a close-up of the pour, a macro of condensation on the glass with a drip running down it, and a wide shot of the full glass. The light, the slate and the unlabeled bottle stay the same across the cuts, which makes it read like an edited ad. The fault: during the pour the ice cubes shrink and merge, from 3 or 4 cubes to 2 as the coffee rises. The 21:9 bay clip is one continuous shot with no cuts: the camera glides forward and lower as the boat crosses, and the cliffs, pines and the boat’s wake hold their shape. The water comes out green-teal under a warm haze rather than turquoise, and 3 seconds is short enough that little happens beyond the glide.
Prompt · Kling 4.0
An unlabeled glass bottle of cold brew coffee on wet black slate, ice cubes dropping into a short tumbler beside it, coffee poured over the ice in a slow swirl, condensation beading on the glass, moody side light, slow orbit around the bottle, ice clinking.
Prompt · Kling 4.0
Cinematic wide shot, a lone white sailboat crossing a calm turquoise bay at golden hour, limestone cliffs and pine trees on both sides, slow drone glide forward, soft haze, gentle waves.
What Kling 4.0 means if you make videos for social and ads
- One take for a whole Reel. A 15- to 30-second product or travel shot no longer has to be stitched from 5- or 10-second clips with a jump at every seam.
- 21:9 for trailers and YouTube openers, and 9:16 from the same model for the cut-down. Plan the crop before you generate, not after.
- Reference images for product ads. Give it up to 10 shots of a product and name them in the prompt to keep the packaging the same through the clip. For a finished ad with copy and a voice, the Ads Studio builds it from a product page.
- Draft short, then go long. Test the prompt as a 3-second clip at 720p for 33.75 credits, then make the 30-second version once the look is right.
- Pick Kling 3.0 when the clip is silent and short. Pro without sound is 8 credits a second against 11.25.
Questions
- How much does Kling 4.0 cost?
- On RenderHour, 11.25 credits a second at 720p and 16.5 at 1080p, so a 5-second clip is 56.25 or 82.5 credits and a 30-second clip 337.5 or 495. On Plus billed yearly, about 3.9 cents a credit, a 5-second 720p clip comes to about $2.20. fal lists the model at $0.157 and $0.235 a second on its own API.
- How long can a Kling 4.0 video be?
- Up to 30 seconds in one take. Kuaishou says the model generates up to 30 seconds in a single pass, and RenderHour lets you pick any whole number of seconds from 3 to 30.
- Is Kling 4.0 better than Kling 3.0?
- It does more: takes of up to 30 seconds instead of 15, up to 10 reference images, and a 21:9 frame, at 11.25 credits a second at 720p against 12 for Kling 3.0 Pro with sound. Kling 3.0 is cheaper without sound, at 8 credits a second in Pro, and it offers 4K.
- When was Kling 4.0 released?
- Kuaishou announced on October 19, 2026 that Kling 4.0 launched on October 15. RenderHour put it on sale on October 26, 2026, once its supplier’s API opened.
- Can I try Kling 4.0 for free?
- Not on the free plan, which covers the fast models. The 3-day free trial gives 80 credits on every model, which covers one 5-second Kling 4.0 clip at 720p for 56.25 credits.
- Does Kling 4.0 make sound?
- Yes. Clips come with a sound track, and on RenderHour there is no setting to turn it off. For silent clips, Kling 3.0 has a cheaper no-sound mode.
Try Kling 4.0 on RenderHour
10 free credits to start and a 3-day free trial. You see the price in credits before you generate, and a failed run costs nothing.
Try Kling 4.0Sources
- Kuaishou via Bernama: Kling AI officially launches next-generation Kling 4.0
- fal: Kling 4.0 text-to-video, pricing and limits
- fal: Kling 4.0 image-to-video
Prices and rankings as of October 26, 2026. They change often; the links show the current figures.