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Kling 4.0 AI Video Generator
Turn a sentence, a still or a reference clip into a 4K video up to 30 seconds long. The Kling 4.0 AI Video Generator keeps voices in sync across languages.
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A Closer Look at the Kling 4.0 AI Video Generator
Kuaishou's Kling 4.0 model converts a script, a photo or uploaded reference media into a complete clip. Omni Reference lets you feed visuals and voice into the same pass, so picture and audio stay locked together no matter which language is spoken.
- One Input Pool for Every AssetStills, clips, voice recordings and character assets all go into the same Omni Reference pool, which tops out at 15 uploads for a single project.
- Voices That Match the PictureDialogue arrives exactly on cue, and two-channel stereo output separates each speaker so listeners can tell who is talking.
- Clips of 3–30 Seconds, Extended on DemandOne render covers three to thirty seconds. When a story needs more room, the extra footage comes from a separate extension pass rather than the original generation.
Kling 4.0 AI Video Generator: Build a Clip in Three Steps
Follow three straightforward steps and walk away with a reviewed, export-ready video made in the Kling 4.0 AI Video Generator.
Standout Capabilities of the Kling 4.0 AI Video Generator
Longer runtimes, stacked reference inputs and multilingual control over sound and image — all delivered inside one Kling 4.0 AI Video Generator workspace.
Runs of Up to 30 Seconds
One render can last half a minute, enough space for an opening, a middle turn and a payoff.
Choose 720p, 1080p or 4K
Set your resolution and frame the shot for wherever it will live: 21:9, 16:9, 1:1, 9:16 or Auto spans vertical social clips to widescreen product films.
Fifteen Omni Reference Slots
Blend images, video, audio samples and characters inside a single allowance of 15 — say 10 photos, or 5 clips totaling 30 seconds, or 7 subjects.
Voice References in Any Language
Audio samples shape how each character sounds, while visuals and two-channel stereo remain aligned whatever language is used.
Steer the Shot with 10 Keyframes
Place as many as 10 keyframe images to pin down a character's appearance, the moment a scene changes and how the shot begins and ends.
Precise, Targeted Edits
Adjust expressions, movement, surroundings or overall style by supplying up to 5 clips — one serving as the main take, each 3–30 seconds and 30 seconds combined at most.
Kling 4.0 AI Video Generator: Your Questions Answered
Answers on clip length, output quality, reference limits, editing, credit costs and API access for the Kling 4.0 AI Video Generator.
What clip length, resolution and aspect ratio can I choose?
Renders last anywhere from three to thirty seconds and export at 720p, 1080p or 4K. HDR sits outside the resolution setting, so double-check what your final delivery spec calls for.
How many Omni Reference files am I allowed?
You get a combined maximum of fifteen, covering images, video, audio samples and characters. Because every category draws from that one pool, the individual limits do not add up.
Are voice references included in the 15-file cap?
Yes — audio samples come out of the same fifteen. Speech and visuals remain aligned across languages, so review how each line sounds once the render finishes.
What does targeted editing actually let me change?
Upload up to five clips with one designated as the main take. Each has to sit between three and thirty seconds and the combined total cannot pass thirty; then describe the expression, movement, background or style you want altered.
How is Kling 4.0 different from Kling 3.0 or Seedance 2.5?
Compare runtime, picture quality, accepted inputs and the level of control each one gives you. Kling 4.0 stretches to thirty seconds while Kling 3.0 halts at fifteen, and it brings ten keyframes and fifteen Omni Reference slots to the table.
What credits does it use, and can I access an API?
Any credits sitting in your Kling Motion Control balance work here, and the figure shown on the generate button updates as you change settings. Web access does not guarantee API access — confirm model IDs, accepted inputs and billing with your provider.
Put the Kling 4.0 AI Video Generator to Work
Your existing Kling Motion Control credits transfer without any setup — review the cost shown before pressing generate, and keep a note of the prompts that worked best.