Kling 4.0
Generate Up to 30 Seconds
Kling 4.0 generates videos up to 30 seconds long in a single generation. Give the opening, main action, and ending room to unfold, then extend the video when your story needs more time.
Kling 4.0 AI Video Generator: Make Cinematic Video from Text and Images
Generate up to 30-second videos in 4K, with up to 15 reference assets, 10 keyframe images, multilingual audio-visual synchronization and stereo sound.
Resolution
Aspect ratio
5s
3s30s
Demo queue only — no video rendering or credit deduction.
Hot air balloon over a misty valley
AI-generated illustration · 720p · 16:9Hot air balloon over a misty valley, cinematic composition, gentle camera movement, natural light, detailed textures.
What is Kling 4.0?
Kling 4.0 is an AI video model from Kuaishou for creating video from text, images, and reference materials. Omni Reference brings visual and voice references into the same workflow, with multilingual audio-visual synchronization.
It follows earlier Kling models, including Kling 3.0 and Kling 3.0 Turbo.
Generate 3–30 seconds in one pass with 720p, 1080p or 4K output. Use up to 10 keyframes to guide the scene, and combine up to 15 Omni Reference assets across images, videos, voices and subject elements.
Kling 4.0 Features
Longer videos, flexible references, and multilingual sound and picture in one workflow.
Up to 4K Video
Choose 720p, 1080p or 4K video output. Compose for your final delivery with 21:9, 16:9, 1:1, 9:16 or Auto aspect ratios, from social clips to widescreen product presentations.
Up to 15 Reference Assets
Combine up to 15 reference assets in total across images, videos, voices and subject elements. Use up to 10 images, 5 videos totaling 30 seconds, or 7 subject elements within that shared limit.
Multilingual Audio and Voice References
Create multilingual dialogue with synchronized picture and two-channel stereo audio. Combine voice references with visual materials to guide each character’s performance.
Control Up to 10 Keyframes
Use up to 10 keyframe images to define important moments in a 3–30-second video. Guide character states, scene changes and the opening and closing composition.
Targeted Video Editing
Refine expressions, movement, backgrounds and style using up to 5 input video clips, including one primary video. Each clip is 3–30 seconds, with a combined limit of 30 seconds.
Kling 4.0 Creative Controls
Shape the subject, voice, and continuation of your scene with a clear creative brief.
Define the Subject
Choose references that show the appearance you want. Describe what the subject does, rather than repeating every detail already visible in the reference.
Describe the Camera Move
Give the shot one clear camera direction, such as a slow push-in or a side tracking move. Treat this as prompt direction and review how the output follows it.
Set the Light and Location
Name a concrete setting and a light source. Keep these directions consistent when you plan another shot or extend the same scene.
Guide the Voice
Use voice references with multilingual audio-visual synchronization. Write concise dialogue and review which voice delivers each line in the result.
Control Up to 10 Keyframes
Use up to 10 keyframe images to define the opening, main action and ending. Keep character details and lighting consistent between the frames.
Edit an Existing Video
Use a primary video and supporting references to change expressions, movement, backgrounds or style. Keep the combined input-video duration within 30 seconds.
What You Can Make with the Kling 4.0 AI Video Generator
Six ways to create with Kling 4.0.
Adapt your references and shot direction to each project, from a short product reveal to an extended scene.
Product ads
plan a product reveal up to 30 seconds and use reference elements to guide its appearance
Talking-head clips
prepare a character scene with voice references and multilingual synchronized dialogue
Short film scenes
plan an opening, action and ending across up to 30 seconds, guided by up to 10 keyframes
Social cuts
compose a short clip for your social placement and add exact captions in your editor
Explainer video
explain a concept across a 3–30-second sequence with clear visual milestones and narration
Music-led montage
gather visual references and assemble the final cuts to your chosen music in an editor
Start with the shot that carries your main idea. Add references for the details that matter, then assemble captions, branding, and final cuts in your editor.
Kling 4.0 Prompt Examples
Six prompt examples for subjects, camera movement, and lighting. Copy one and adapt it to your scene.
Tailor at the Workbench
An elderly tailor sewing a wool jacket at a wooden workbench, close-up on the fabric and tools, slow camera push-in, soft window light from the left.
Keep the action simple and the framing close to focus attention on the craft.
Watchmaker and Mechanical Details
A watchmaker examining an open mechanical watch on a workbench, macro view of the gears and fine tools, slow sideways camera move, soft task-lamp light.
Name the detail you want in focus and use one camera move to keep the shot readable.
Snow Leopard on a Rocky Slope
A snow leopard walking carefully along a rocky mountain slope, wide view with distant peaks, slow tracking shot from the side, pale dawn light.
Combine a clear direction of movement with a wide frame to show the scale of the landscape.
Autumn Forest in Golden Light
An autumn forest with golden leaves moving gently in the breeze, slow forward camera move between the trees, warm backlight filtering through the canopy.
Describe the movement of the leaves separately from the camera movement.
Sunlit Architectural Staircase
A curved wooden staircase inside a quiet building, low-angle view looking upward, slow camera tilt following the handrail, patterned afternoon sunlight on the walls.
Give the camera a visible line to follow, such as the handrail or the edge of the stairs.
Florist Wrapping a Bouquet
A florist folding brown paper around a bouquet of pink and cream flowers, medium close-up at a shop counter, fixed camera, soft natural light from a nearby window.
A fixed camera leaves attention on the wrapping action and makes changes easier to review.
Who is Kling 4.0 Built For?
Four groups and the video workflows Kling 4.0 supports for each.
Short-form creators
Build short stories, character clips, and social edits around one clear action. Draft the main shot first, then decide whether the story needs a continuation or a cut.
Ad and marketing teams
Turn product references and a campaign brief into a shot plan. Compare framing and movement options, then add exact logos, prices, and campaign text in your editor.
Studios and animation teams
Explore scene blocking, reference combinations, and longer continuations before a final production pass. Review character appearance and continuity at each extension boundary.
Developers
Define test cases for inputs, output quality, and processing time before building an integration. Confirm API access and supported modes with your provider; web access alone does not establish API availability.
Who should skip it. If you only need a short clip, compare the current tools on your own brief. Longer duration and reference controls are useful only when your project needs them; check the actual credit cost before choosing.
Kling 4.0 vs Kling 3.0 and Seedance 2.5
Compare video duration, resolution, reference inputs and creative controls.
| Feature | Kling 4.0 | Kling 3.0 / Omni | Seedance 2.5 |
|---|---|---|---|
| Max clip, one pass | 30s | 15s | 30s |
| Resolution | 720p / 1080p / 4K | native 1080p + 4K | native 1080p |
| Reference capacity | Up to 15 reference assets in total | Depends on the mode; check the selected model | Up to 50 files (30 images, 10 videos, 10 audio) |
| Reference input types | Images, videos, voice references and subject elements | Character video reference; other inputs depend on the mode | Images, video, and audio |
| Native audio + lip-sync | multilingual audio-visual synchronization | yes | yes |
| Multi-keyframe input | Up to 10 images | not compared here | not compared here |
| Video editing inputs | Up to 5 clips; 30s combined | not compared here | not compared here |
When to use Kling 4.0.
Consider Kling 4.0 when your brief needs a longer continuous scene, multiple references, or multilingual dialogue. Choose the generation or extension workflow that fits the shot rather than starting with the longest duration.
How to compare the models.
Use the same brief and reference materials to compare framing, subject detail, voice timing, and continuity. Check the actual generation cost in your service. Element and file counts use different rules, so a larger number alone does not establish better reference control.
What to Check in Kling 4.0 Videos
Four things to plan around before you build a project on it.
Review these details before delivering a video, especially when combining reference assets, keyframes or edited footage.
Hands doing detailed work.
Review fingers, tool contact, and small objects frame by frame. Keep an alternate take or practical insert available for essential close-ups.
Text you need to be exact.
Check brand names, prices, and captions. Composite exact text in your editor where accuracy matters.
Voice and scene continuity.
Review speaker identity, sound timing, and visual continuity across the whole sequence, especially at extension boundaries and in longer sequences.
Exact brand or product replication.
Compare the output with your references. Check product shape, colour, logos, and fine details across the sequence before delivery.
What this means in practice. Check the generated sequence against your brief and references. Use your editor for exact text, branding, and any corrections the generation controls do not cover.
How To Use the Kling 4.0 AI Video Generator
Explore these three steps in our demo workflow. Supported modes will be shown in the generator.
Choose Kling 4.0 and add references.
Select the model and add clear references for your subject, visual direction, or voice. Use only materials that help define the scene, and follow the input formats shown in the interface.
Describe your scene and choose the settings.
Describe the subject, camera, and light — a chef plating pasta, slow dolly in, warm window light from the left. Choose the duration and output settings for your project. Start with a short draft to check the composition.
Generate, review, and extend.
Review the action, voice timing, and reference details in your draft. If the scene needs more time, describe the next action and extend it. Check the join before adding captions or exporting your final edit.
Keep your prompts. Phrasing that works carries between Kling versions. A saved prompt library is worth more than any single clip.
Kling 4.0 Pricing
Compare credit packs. IMPORTANT: the current queue is simulated and does not render videos. Do not purchase expecting video generation.
Starter
$9.9 one-time
One-time credit pack
Video rendering is not available. Purchase only if you understand the demo limitations.Includes
- 99 account credits
- Credits do not expire
- Access to the creative workspace
- Current video queue is a simulation
- No rendered video is currently provided
- No credits charged by the demo
- Email support
Most Popular
Basic
$29.9 one-time
One-time credit pack
Video rendering is not available. Purchase only if you understand the demo limitations.Includes
- 330 account credits
- Credits do not expire
- Access to the creative workspace
- Current video queue is a simulation
- No rendered video is currently provided
- No credits charged by the demo
- Email support
Plus
$49.9 one-time
One-time credit pack
Video rendering is not available. Purchase only if you understand the demo limitations.Includes
- 600 account credits
- Credits do not expire
- Access to the creative workspace
- Current video queue is a simulation
- No rendered video is currently provided
- No credits charged by the demo
- Email support
Professional
$99.9 one-time
One-time credit pack
Video rendering is not available. Purchase only if you understand the demo limitations.Includes
- 1250 account credits
- Credits do not expire
- Access to the creative workspace
- Current video queue is a simulation
- No rendered video is currently provided
- No credits charged by the demo
- Email support
Kling 4.0 Frequently Asked Questions
Capabilities, references, pricing, and access.
What is Kling 4.0?
Kling 4.0 is an AI video model from Kuaishou. It generates 3–30-second videos in 720p, 1080p or 4K, with multilingual synchronized audio and stereo output. Use up to 15 Omni Reference assets in total and up to 10 keyframe images to direct the scene.
How long can Kling 4.0 videos be?
Kling 4.0 supports 3–30 seconds in a single generation. Video extension is a separate workflow; check the extension options available in your service rather than treating an extended video as a single generation.
Does Kling 4.0 output 4K?
Yes. Kling 4.0 supports 720p, 1080p and 4K output. Choose the resolution available in your selected mode. Resolution and HDR are separate settings; verify the export options required for your delivery.
How does Omni Reference work?
Use up to 15 reference assets in total across images, videos, voice references and subject elements. Category limits include up to 10 images, up to 5 videos with a combined duration of 30 seconds, and up to 7 subject elements. These limits share the total of 15; they are not separate allowances that can be added together.
Does Kling 4.0 support voice references?
Yes. Voice references help guide a subject’s voice and count toward the total of 15 Omni Reference assets. Combine voice direction with multilingual audio-visual synchronization, then review the dialogue timing in the output.
Can I edit an existing video with Kling 4.0?
Kling 4.0 supports video editing with up to 5 input clips, including one primary video. Each clip must be 3–30 seconds long, and their combined duration must not exceed 30 seconds. Define the expression, movement, background or style you want to change.
How many keyframes can Kling 4.0 use?
Kling 4.0 supports up to 10 keyframe images. Use them to define important visual moments, character states and scene changes. Keep the subject and visual direction consistent between frames.
How does Kling 4.0 compare to Kling 3.0?
Kling 4.0 supports up to 30 seconds per generation, compared with the 15-second Kling 3.0 limit listed here. Kling 4.0 adds up to 10 keyframe images and supports up to 15 Omni Reference assets in total. Compare the same brief and check the available settings and cost in your chosen service.
How much does Kling 4.0 cost, and can I use my existing credits?
Review the plans on our pricing page. The current generation queue is a simulation: no video is rendered and no credits are deducted. Credits from other services cannot be used here.
Can I use Kling 4.0 for free?
You can explore the interface for free. The current generation workflow is a simulated queue and does not generate videos.
Is there a Kling 4.0 API?
API access is separate from access through a web generator. Check your provider documentation for Kling 4.0 model IDs, supported inputs, modes, and billing before integration. This page does not announce an API endpoint.
Where can I use Kling 4.0?
Use the creation panel at the top of this page to explore prompts, references and settings. This site currently offers a simulated queue rather than actual video generation.
Does Kling 4.0 add a watermark?
Check the watermark and commercial-use terms of the service and plan you choose. Model capabilities alone do not determine those terms. Review the rights to your reference materials before publishing an output.
How long does Kling 4.0 take to generate a clip?
The current queue is a simulation and stays waiting until you cancel. No actual generation time or rendered video is available.
Does Kling 4.0 support multilingual audio?
Yes. Kling 4.0 supports multilingual audio-visual synchronization, voice references and two-channel stereo output. Choose the language and delivery style for each speaker, then review pronunciation and timing before delivery.
Explore the Kling 4.0 AI Video Generator
Explore the video tools available on Kling 4.0 today.
Explore the simulated workflow. No videos are rendered and no credits are deducted.