Castaly · Blog · Pricing & billing
Kling 3.0 Pricing: What Does a 5-Second Clip Cost?
Kling 3.0 costs $0.38 for 5 seconds at 720p, $0.51 at 1080p and $1.91 at 4K. Rates for every length, what audio adds, and where to save on a finished minute.
Kling 3.0 bills by the second, so its price is easy to work out: pick a resolution, decide on sound, multiply by the length. The useful part is seeing which of those choices move the bill most, because one of them is cheaper than it looks and another is much more expensive.
The short answer
| Resolution | Per second | 5-second clip | 5 seconds with audio |
|---|---|---|---|
| 720p | $0.07644 | $0.38 | $0.57 |
| 1080p | $0.10192 | $0.51 | $0.76 |
| 4K | $0.3822 | $1.91 | $1.91 |
The ratio makes no difference: 16:9, 9:16 and 1:1 all cost the same.
Every length
Kling 3.0 offers five fixed lengths:
| Length | 720p | 720p + audio | 1080p | 1080p + audio | 4K |
|---|---|---|---|---|---|
| 3 s | $0.23 | $0.34 | $0.31 | $0.46 | $1.15 |
| 5 s | $0.38 | $0.57 | $0.51 | $0.76 | $1.91 |
| 8 s | $0.61 | $0.92 | $0.82 | $1.22 | $3.06 |
| 10 s | $0.76 | $1.15 | $1.02 | $1.53 | $3.82 |
| 15 s | $1.15 | $1.72 | $1.53 | $2.29 | $5.73 |
The final charge follows the length the provider reports for the finished clip, so treat these as the Studio's estimate for the length you request.
What moves the bill
1080p costs a third more than 720p
For Kling 3.0, moving from 720p to 1080p adds only 33%, far less than the 2.25 times as many pixels would suggest. If the clip is going anywhere people will look closely, 1080p is the sensible default.
4K costs nearly four times 1080p
$0.3822 against $0.10192 a second is a factor of 3.75. Use it for a final render of a shot you have already settled at a lower resolution.
Audio adds 50%, except at 4K
Generate audio raises the 720p and 1080p rates by half. Two results follow:
- A silent 1080p clip ($0.51) is cheaper than a 720p clip with sound ($0.57). If you plan to add your own music or voice afterwards, leave audio off and take the higher resolution.
- At 4K the rate is the same with or without sound, so turn it on if you might use it.
Frames and references cost nothing extra
A first frame, a first and last frame, or a reference image plus reference video (motion control) leaves the rate where it is. Kling 3.0 Omni and Kling O1 do charge more when a reference video is attached; the Kling comparison has those rates.
What a finished minute costs
Kling 3.0's longest clip is 15 seconds, so a minute of footage is four clips at best. If every generation were usable:
| Resolution | 4 × 15 s, silent | 4 × 15 s, with audio |
|---|---|---|
| 720p | $4.59 | $6.88 |
| 1080p | $6.12 | $9.17 |
| 4K | $22.93 | $22.93 |
Real projects also pay for the takes you throw away. If one in three is usable, multiply by three: about $18 for a finished silent minute at 1080p.
Spend less on the tries
Test at 720p and render the keeper at the resolution you need.
For one 5-second shot at 1080p, three 720p tests and one final come to 3 × $0.38 + $0.51 = $1.65. Four attempts at 1080p cost $2.04. The final render is a new generation, not an upscale of a test, so use the tests to settle the prompt, framing and timing.
If you need volume more than the newest model, the family has cheaper options. Kling 2.6 and 2.5 Turbo cost half as much at 720p, $0.19 for 5 seconds. Kling 3.0 Turbo, despite the name, costs more: $0.51 at 720p.
Holds and refunds
Castaly reserves the estimate from your balance when the task starts and settles from the length the provider reports. If a task fails, the whole hold is refunded. A finished clip you decide not to use is still charged. The billing guide covers this step by step.
FAQ
How much does Kling 3.0 cost per second?
$0.07644 at 720p, $0.10192 at 1080p and $0.3822 at 4K. With audio on, 720p is $0.11466 and 1080p is $0.15288; 4K does not change.
Does Kling 3.0 charge more for vertical video?
No. 16:9, 9:16 and 1:1 cost the same. The vertical video guide compares the ratios across models.
Is Kling 3.0 Turbo cheaper than Kling 3.0?
No. Turbo costs $0.10192 a second at 720p against $0.07644 for Kling 3.0.
Do I pay for failed generations?
No. If a task fails, the hold goes back to your balance in full.