Pandaily reported on 16 October that Kuaishou's Kling AI has opened Kling 4.0 to all users on klingai.com, after a preview. Kling AI says one clip can last up to 30 seconds. Creators can set up to 10 keyframes, which are marked moments that fix a character's state, a scene change or a plot beat. A single job can draw on up to 10 images, five video clips and seven subjects as guides for character, motion, camera and sound. Sound is two-channel stereo, with lip sync in nine named languages.
Kling AI says 4K and 1080p 10-bit HDR output are coming soon, as is an enterprise API. Pandaily gives no dates for either, and no pricing, usage limits or plan details. Kling AI says Kling 4.0 is already wired into MCP (a standard link between AI tools and other software) and CLI (command-line) workflows. The report does not say how developers get access or whether it is open to everyone.
The release pairs timed story control and reference inputs with built-in sound, which suits directing a scene more than prompting a single clip. Buyers cannot yet plan around it. Ask Kling AI: what does it cost, what are the limits per plan, when does the enterprise API arrive, and how do developers get MCP and CLI access?