Last refreshed 2026-10-21. Next refresh: weekly.
Why use Kling 4.0 on fal API?
fal API offers Kling 4.0 with pay-as-you-go video pricing at $0.157/second. fal API is a developer platform for calling a large catalog of production-ready image, video, audio, vision, 3D, and multimodal generation models through a unified API surface.
Setup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: kling/v4/text-to-videokling/v4/text-to-videoRequest example
kling/v4/text-to-video.Gotchas
- Use provider model ID "kling/v4/text-to-video", not the LLMReference slug "kling-4.0".
Pricing
| Type | Rate |
|---|---|
| Video output | $0.157/sec |
Capabilities
About Kling 4.0
Kling 4.0 is Kuaishou's next-generation native multimodal video model, first shown by Kling AI in creator posts on October 10, 2026, detailed in the Kling 4.0 release overview on October 14 and made fully available in the Kling AI app and platform on October 15. It improves stability for complex motion and consistency across characters and scenes, generates synchronized audio, voices and dialogue, and supports text-, image- and reference-to-video plus video editing at 720p and 1080p, with 4K/1080p 10-bit HDR output listed as coming soon.