Kling 4.0
AI Video Generator
Kling 4.0 is the newest video model from Kuaishou. It makes one take of 3 to 30 seconds, twice as long as Kling 3.0, with sound, from a prompt, from a first and last frame, or from up to 10 reference images, in 720p or 1080p and in 16:9, 9:16, 1:1 or 21:9.
Prices
| Setting | Credits per second |
|---|---|
| 720p | 11.25 |
| 1080p | 16.5 |
Kling 4.0 comes with the 3-day free trial or a plan; the free plan gives 10 credits to start on the fast models. A failed generation costs nothing.
What it takes
- Input
- Text prompt, First frame (a photo to animate), Last frame, Up to 10 reference images
- Length
- 3 to 30 seconds
- Aspect ratios
- 16:9, 9:16, 1:1, 21:9
Best for
- Long single takes of up to 30 seconds
- Keeping a character or product the same with up to 10 reference images
- Widescreen 21:9 shots for trailers and ads
Questions
- How much does Kling 4.0 cost?
- From 11.25 credits per second; the exact price is on the Generate button before you start. Plans start at $10 a month for 250 credits, and the same credits work with every model.
- Can I try Kling 4.0 for free?
- Yes, with the 3-day free trial: Kling 4.0 and every other model for 3 days, then a plan you can cancel any time. The free plan without a card runs the fast models.
- How long can a Kling 4.0 clip be?
- 3 to 30 seconds. The price is per second, so a longer clip costs proportionally more.
- Is there a Kling 4.0 API?
- Kling 4.0 is not sold through the dollar API yet. You can run it from Claude or ChatGPT through the RenderHour MCP server, paid with credits.
- What if a generation fails?
- Its credits come back to your balance automatically. You pay only for results.