Kling opens the Kling 4.0 API to developers
By Steven Van ·
Kling began rolling out API access to Kling 4.0 so developers can build the video model into their own products and workflows.
Kling AI announced on October 21 that the Kling 4.0 API is officially rolling out, inviting developers to integrate the model into their products and workflows.

The API opened the same day Kling 4.0 went live across partner apps, including Higgsfield, fal, Runway, Magnific, OpenArt, Morphic and Adobe Firefly. Partners describe 30-second scenes, start, middle and end frames, and up to 10 keyframes and 15 references.
Kling’s post does not include API pricing or rate limits.
Sources: Kling AI’s API announcement, Higgsfield’s Kling 4.0 launch, Morphic’s Kling 4.0 launch.