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Kling 4.0 AI Video Generator
Turn a written prompt, a still or reference clips into 3–30 second 4K video with the Kling 4.0 AI Video Generator — multilingual audio stays in sync.
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A Closer Look at the Kling 4.0 AI Video Generator
Developed by Kuaishou, this model shapes written scripts, single frames and uploaded references into finished footage. Omni Reference handles sight and sound in one pass, so dialogue lands on the beat in whichever language you choose.
- Reference Blending in One PassStills, video takes, voice recordings and character assets can all be combined as Omni Reference material, capped at fifteen entries for any single project.
- Language-Ready Stereo SoundDialogue lands on the same beat as the action, while two-channel output keeps each speaker distinct so viewers can tell who is talking.
- Three to Thirty Seconds per PassOne render covers anything from three to thirty seconds; extra length is added afterwards as a separate extension run rather than inside the original job.
A Three-Step Guide to the Kling 4.0 AI Video Generator
Follow three short stages to move from raw references to a checked, downloadable clip made with the Kling 4.0 AI Video Generator.
Capabilities Inside the Kling 4.0 AI Video Generator
Longer runtimes, stacked reference material and language-aware audio-visual control come together in one workspace built around the Kling 4.0 AI Video Generator.
Half-Minute Renders in One Go
A single render can reach thirty seconds — enough room for an opening, a turning point and a close.
Output From 720p to 4K
Choose 720p, 1080p or 4K and match the frame to where it plays — 21:9, 16:9, 1:1, 9:16 or Auto, covering vertical social cuts through to wide product films.
Fifteen Reference Slots to Share
Combine stills, footage, voice recordings and character assets inside one budget of fifteen — say ten pictures, or five clips totalling thirty seconds, or seven subjects.
Voice Samples Across Languages
Uploaded voice recordings shape how each speaker sounds, while picture and two-channel stereo stay locked together no matter the language.
Ten Keyframes for the Beats That Matter
Anchor key moments with up to ten keyframe stills, guiding a character's look, the point where the scene turns and how the shot opens and closes.
Surgical Edits to Existing Footage
Adjust facial expressions, motion, settings or overall style by supplying up to five clips — one as the main take — each between three and thirty seconds and no more than thirty in total.
Questions About the Kling 4.0 AI Video Generator
Answers on runtime, resolution, references, editing, credits and API access for the Kling 4.0 AI Video Generator.
Which clip lengths, resolutions and aspect ratios can I pick?
Renders range from three to thirty seconds and can be delivered at 720p, 1080p or 4K. HDR sits outside the resolution setting, so check what your final delivery actually needs.
What is the limit on Omni Reference material?
Fifteen entries is the shared cap across pictures, footage, voice recordings and subject assets. Each category draws from that single pool, so the numbers cannot be added together.
Are voice samples included in the fifteen-asset cap?
Yes — they come out of the same pool of fifteen. Sound and picture remain aligned across languages, so review how each line lands once rendering finishes.
What happens during targeted video editing?
You may upload up to five clips, one of which serves as the main take. Each has to sit between three and thirty seconds and the total cannot pass thirty; state which expression, motion, setting or look should change.
Where does Kling 4.0 stand next to Kling 3.0 and Seedance 2.5?
Compare runtime, output quality, accepted inputs and the level of control each offers. Kling 4.0 stretches to thirty seconds where Kling 3.0 stops at fifteen, and adds ten keyframes plus fifteen Omni Reference slots.
What credits are required, and can I use an API?
Credits already held on Kling Motion Control work here, and the figure on the generate button updates as you change settings. Web access does not guarantee API use — confirm model IDs, supported inputs and billing with your provider.
Put the Kling 4.0 AI Video Generator to Work
Credits already in your Kling Motion Control balance carry straight over — check the price shown before you hit generate, and keep the prompts that delivered.