Use Kling 4.0 online, pay per second
Kling 4.0 by Kuaishou, inside Kreavo: text-to-video or image-to-video with sound generated in the same pass, any length from 3 to 30 seconds at 720p or 1080p. Start from a first frame (and a last frame) or from up to 10 reference images of your product or AI influencer. Billed per second: $0.25 at 720p, $0.37 at 1080p.
150 free credits for images · no card · video with the $1 trial
Quick answer
Kling 4.0 on Kreavo costs $0.75 to $11.10 per clip ($0.25 to $0.37 per second), for any length from 3 to 30 seconds at 720p or 1080p, with sound generated in the same pass. A 5-second 720p clip costs $1.25.
- Price
- $0.75 to $11.10 per clip; $1.25 for a 5-second 720p clip
- Per second
- $0.25 at 720p, $0.37 at 1080p
- Length
- Any length from 3 to 30 seconds
- Resolution
- 720p or 1080p
- Audio
- Yes, sound is generated with the video
- Generation time
- Not published yet: fewer than 20 completed jobs on Kreavo in the last 60 days
- Access
- Video needs a paid plan or the $1 trial (7 days, every video model, 200 credits), which then becomes the Starter plan at $12/month unless you cancel. Customers who have paid once can also buy credit packs (1,000 credits for $10, valid 3 months) and pay for Video Studio videos with them, without a plan.
Prices come from the formula that bills each generation, updated October 29, 2026. Full data: model price index.
How to use Kling 4.0 on Kreavo
Select Kling 4.0
Open the Kreavo video studio and choose Kling 4.0 in the model list. It runs on the same credit balance as every other model.
Pick frames or references
Use a first frame (and optionally a last frame) to fix where the clip starts and ends, or attach up to 10 reference images of your product or AI influencer. Kling 4.0 takes one mode or the other, not both. With no image, it works from the text prompt alone.
Set length and resolution
Choose any duration from 3 to 30 seconds, one-second steps, at 720p or 1080p. The price on the Generate button is seconds × the per-second rate.
Generate and export
Export in 9:16, 16:9, 1:1 or 21:9. With a first frame, the clip follows that image's framing (Auto).
What Kling 4.0 does
Kling 4.0 is the newest Kling model on Kreavo. It generates video with sound in the same pass, from a text prompt, from a first frame (with an optional last frame), or from up to 10 reference images, which is how you keep a real product or the same AI influencer in the scene. Its length is set to the second: anywhere from 3 to 30 seconds. Earlier Kling models on Kreavo come in fixed lengths: Kling 3.0 ($1.40 to $5.60 per clip) at 5, 10 or 15 seconds, and Kling 2.6 ($1.84 to $3.67 per clip) at 5 or 10 seconds.
- Text-to-video and image-to-video in one model
- Any duration from 3 to 30 seconds
- 720p and 1080p output
- Sound generated with the video
- First frame + last frame, or up to 10 reference images
- Aspect ratios 9:16, 16:9, 1:1 and 21:9, or Auto from the first frame
Kling 4.0 pricing on Kreavo
Prices are in credits, shown in dollars at 1 credit = $0.01, the price of the smallest credit pack ($10 for 1,000 credits). Bigger packs and monthly plans cost the same or less per credit. Kling 4.0 is billed per second of video: $0.25 at 720p and $0.37 at 1080p. A clip therefore costs between $0.75 (3 seconds at 720p) and $11.10 (30 seconds at 1080p); the default 5-second 720p clip is $1.25.
Every video and image model, priced the same way: the AI model price index
| Duration | 720p | 1080p |
|---|---|---|
| 3 s | $0.75 | $1.11 |
| 5 s | $1.25 | $1.85 |
| 8 s | $2.00 | $2.96 |
| 10 s | $2.50 | $3.70 |
| 12 s | $3.00 | $4.44 |
| 15 s | $3.75 | $5.55 |
| 20 s | $5.00 | $7.40 |
| 25 s | $6.25 | $9.25 |
| 30 s | $7.50 | $11.10 |
What the $1 trial and a credit pack buy
The $1 trial adds 200 credits: enough for 8 seconds of Kling 4.0 at 720p, or 5 seconds at 1080p. After a first payment, a credit pack (1,000 credits for $10, valid 3 months) covers 40 seconds at 720p or 27 seconds at 1080p.
What the trial includes, model by model: the $1 AI UGC trial
Kling 4.0 vs other models on Kreavo
Kling 3.0 works out at $0.28 to $0.37 per second in fixed lengths; Kling 4.0 costs $0.25 to $0.37 per second and lets you pay for exactly the length you need, from 3 seconds, and accepts reference images. Seedance 2.5, Wan 3.0 and Grok Imagine also reach 30 seconds, so the same product and influencer can be tested across them in one account. The cost and speed index compares every model's price per second at each resolution.
Side by side, with prices at the same settings: Seedance 2.5 vs Kling 3.0
Best use cases for Kling 4.0
Kling against Google's model: VEO 3.1 vs Kling 3.0
- Creator-style UGC ads with voice and sound, cut to the exact length of the hook, from 3 to 30 seconds
- Product videos built from up to 10 reference photos of the real product
- Start-to-end shots: a first frame and a last frame to control where the clip lands
- Wide 21:9 banners as well as 9:16 for TikTok, Reels and Shorts
Limits to know
Price per second and measured render time of every video model: AI video generation cost and speed index
- Maximum resolution is 1080p
- Frames and reference images cannot be combined in one clip; a last frame needs a first frame
- No video input: Kling 4.0 generates new clips and does not edit an existing video
- Price grows with length and resolution: compare $0.75 for 3 seconds at 720p with $11.10 for 30 seconds at 1080p
- Render time is not published yet: too few completed Kling 4.0 jobs so far
Kling 4.0 on Kreavo vs the official route
Dollar prices use 1 credit = $0.01, the smallest pack ($10 for 1,000 credits). Bigger packs and monthly plans cost the same or less per credit.