Using Kling 4.0 on fal API

Implementation guide · Kling · Kuaishou Technology

Serverless

fal API exposes Kling 4.0 through model ID kling/v4/text-to-video. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-10-21. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at fal API and generate an API key.
  2. 2
    Use the fal API SDK or REST API to call kling/v4/text-to-video — see the documentation for request format.
  3. 3
    You'll be billed $0.157/sec of video output. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

See fal API documentation for integration details.

Pricing on fal API

TypeRate
Video output$0.157/sec

Capabilities

MultimodalAudio

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.

Full model details →

Model Specs

Released2026-10-10

More Models on fal API

Kling
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Provider

fal API

fal

Paris, Île-de-France, France