Kling 4.0 Flash

Kling 4.0 Flash generates 720p videos from text prompts and image or video references, with durations from 3 to 20 seconds.

Input

Fields marked * are required. Review the price before generating.

Prompt *

Text prompt. Reference inputs as @Image1, @Video1, @Element1, etc.

Duration

Video duration in seconds (3-20).

Start Image

Optional image to use as the first frame. Counts toward the image reference limit.

Uploading a file needs an account. Create accountJPEG, PNG, WebP · up to 25 MB

Images

Reference images, referenced as @Image1, @Image2, ... (max 10).

Uploading a file needs an account. Create accountJPEG, PNG, WebP · up to 25 MB

Videos

Reference videos (3-20s each, 20s combined with element videos), referenced as @Video1, @Video2, ... (max 5).

Uploading a file needs an account. Create accountMP4, WebM · up to 100 MB

Resolution

Output resolution. Flash is 720p only.

Aspect Ratio

Aspect ratio of the generated video. 'auto' adapts it to the references.

Additional settings

Elements

Characters/objects, referenced as @Element1, @Element2, ... (max 7). Up to 3 may be video elements.

Starting price$0.0999 / second

You sign up first. Your settings are kept.

API code for this input

Complete the required fields and fix input errors to see API code.