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Kling 4.0 AI Video Generator
Turn a written idea, a still or a reference clip into a 4K video up to 30 seconds long — the Kling 4.0 AI Video Generator syncs voice with picture.
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Getting to Know the Kling 4.0 AI Video Generator
Developed by Kuaishou, Kling 4.0 converts written briefs, photographs and user-supplied references into ready-to-watch footage. Omni Reference processes sight and sound in one pass, so dialogue tracks stay aligned with the action no matter which language is spoken.
- Omni Reference, All Inputs in One PlaceStills, clips, voice recordings and character elements may be combined freely as Omni Reference inputs, all drawing on one pool of 15 items per project.
- Voices That Match the PictureEvery line of dialogue arrives on cue with the action on screen, while two-channel stereo keeps each character's voice easy to tell apart.
- Clips of 3 to 30 Seconds, Extended LaterOne generation delivers anywhere from three to thirty seconds; any extra time is added afterwards as a separate extension, rather than within the same run.
Three Steps With the Kling 4.0 AI Video Generator
Moving from raw reference material to a checked, export-ready clip takes just three passes.
Standout Capabilities of the Kling 4.0 AI Video Generator
Longer runtimes, stacked reference inputs and fine control over speech and image in any language — all delivered in one place.
Runs of Up to 30 Seconds
One generation can reach the half-minute mark — enough space for an opening, a turning point and a payoff.
Output From 720p to 4K
Choose 720p, 1080p or 4K and match the frame to where it will run — 21:9, 16:9, 1:1, 9:16 or Auto covers anything from vertical social clips to wide-format brand films.
As Many as 15 Omni Reference Items
Combine photos, video, voice clips and character elements inside a single allowance of 15 — say 10 images, 5 clips totalling 30 seconds, or 7 characters.
Voice References in Any Language
Supplied voice samples shape how each speaker comes across, while visuals and two-channel stereo remain locked together whatever language is used.
Fine Control With 10 Keyframes
Pin down the moments that matter using up to 10 keyframe stills, guiding a character's appearance, the timing of scene changes and how a shot begins and ends.
Precision Edits to Existing Footage
Adjust expressions, movement, surroundings or colour by supplying up to 5 clips — one acting as the main take — each between 3 and 30 seconds and no more than 30 seconds combined.
Questions About the Kling 4.0 AI Video Generator
Answers on clip length, output quality, reference limits, editing, credits and API access for Kling 4.0.
What clip lengths, resolutions and aspect ratios can I choose?
Footage can be anywhere from three to thirty seconds long, and you can render at 720p, 1080p or 4K. HDR sits outside the resolution setting, so double-check what your final delivery really needs.
How many Omni Reference items am I allowed?
The overall cap is fifteen, and it covers photos, video, voice recordings and character elements alike. Individual category limits come out of that same pot, so they do not add up on top of each other.
Are voice references part of the 15-item limit?
Yes — they come out of the same fifteen. Sound and image stay aligned whatever the language, so it pays to check how each spoken line sits once rendering finishes.
What does targeted video editing involve?
You provide up to five clips, with one serving as the main take. Every clip must be three to thirty seconds long and the total cannot pass thirty seconds; then describe the expression, movement, background or colour you want altered.
Where does Kling 4.0 sit next to Kling 3.0 and Seedance 2.5?
Compare them on clip length, rendering quality, accepted inputs and the level of control on offer. Kling 4.0 goes as far as thirty seconds while Kling 3.0 caps out at fifteen, and it brings ten keyframes and fifteen Omni Reference slots into play.
What credits are required, and can I access an API?
Any credits already 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 an API — confirm model IDs, accepted inputs and billing with your provider.
Start Creating With the Kling 4.0 AI Video Generator
Your existing Kling Motion Control credits work here as they are — glance at the price before pressing generate, and keep a note of the prompts that worked best.