Kling 4.0 now has an API, with worldwide access planned to widen in stages for enterprise customers and developers; the model can produce clips up to 30 seconds in a single generation.
It also supports longer shots and story sequences with continuity. The planned rollout does not mean every developer can use the API now.
Kling 4.0 is offered on creative platforms including OpenArt, updream, Higgsfield and LibTV, alongside Magnific (Freepik), TapNow, OiiOii, 爱奇艺纳逗Pro, 美图公司 and 腾讯设计 Miora.



