According to Jin10, the Kling 4.0 API has officially launched and will gradually become available to businesses and developers worldwide. Kling's latest model supports native video generation of up to 30 seconds per prompt, long takes, continuous narratives, and director-style thinking throughout. It is also available on iQIYI NaDou Pro, Higgsfield, LibTV, Magnific (Freepik), Meitu, OpenArt, OiiOii, TapNow, Tencent Design Miora, and Updream.