The Beat
A music video cut to the drums, full of paint and color.
Kling 4.0 AI Video Generator
Direct a full 30-second scene from one prompt, with the sound, the dialogue and the people you choose.
What is Kling 4.0?
Kling 4.0 is the AI video model Kuaishou released on October 15, 2026. It turns a prompt, a photo or a set of references into a video of up to 30 seconds, with stereo sound, in one take. On this page you run it, and its faster Flash version, online with Aleph AI credits.
One prompt covers a whole scene: a setup, a turn and an ending, with the same faces, clothes and places from the first frame to the last. Kling has announced 10-bit HDR and 2-minute extensions as the next updates.
Kling 4.0 examples
Films made with Kling 4.0, from Kling AI's official YouTube channel. Watch what the model does with action, music and story, then make your own in the tool above.
King Card
A cinematic short built around a single playing card.
Making an AI music video
Director Simon Meyer, one of the first artists with early access, talks through the music video he made with Kling 4.0.
Kling 4.0 features
Five things that set Kling 4.0 apart.
30-second Kling 4.0 videos in one take
Write the whole scene and Kling 4.0 plays it through, no clips to stitch. The courier leaves the subway at 0:00 and reaches the rooftop at 0:30 in the same jacket, while the night turns to dawn.
- Pick 5, 10, 15, 20, 25 or 30 seconds
- Mark beats with times: 0 to 10 seconds, 10 to 20 seconds
- One camera move runs through the whole take
Kling 4.0 image to video
Upload one photo and Kling 4.0 brings it to life: the wind moves, the subject turns, the camera pushes in, and the face and clothes stay as they are in your photo.
- Portraits, products, paintings and old photos
- Describe the motion and the camera in your prompt
- The face and details in your photo stay the same
Consistent characters from your references
Add up to 10 images and 5 videos: a face, an outfit, a place, a camera move to copy. Tag them as @Image1 or @Video1 in your prompt and the model brings them into the same shot.
- The same face and clothes from the first frame to the last
- A reference video sets the pacing and the camera
- Start and end on frames you pick with First & Last
Sound, dialogue and lip sync
Kling 4.0 makes stereo sound together with the picture: rain, footsteps, music and spoken lines. Put the words in quotes, name the accent, and the lips move with them.
- Dialogue in 9 languages, with accents and dialects
- Ambient sound and effects that follow the action
- On-screen text and subtitles that stay readable
Edit a video you already have
Upload a clip of up to 30 seconds and say what to change: the background, the light, an expression, a line of dialogue. The model keeps the rest of the frame as it was.
- Turn a grey afternoon into a rainy neon night
- Swap a background or an outfit
- Keep the subject, pose and framing
Kling 4.0 vs Kling 4.0 Flash vs Seedance 2.0
What each model gives you on Aleph AI. Kling 4.0 and Flash run in the tool above; Seedance 2.0 has its own page.
| What you get | Top qualityKling 4.0 | Lower costKling 4.0 Flash | Seedance 2.0 |
|---|---|---|---|
| Longest video | 30 seconds | 20 seconds | 15 seconds |
| Resolution | 720p, 1080p, 4K | 720p | 480p, 720p |
| Start from | Text, image, first & last frame, references, a video to edit | Text, image, references | Text, image, first & last frame, references, a video to edit or extend |
| References | 10 images, 5 videos | 10 images, 5 videos | 9 images, 3 videos, 3 audio clips |
| Sound | Stereo with dialogue, on by default | Stereo with dialogue, on by default | Optional |
| Best for | Long scenes, dialogue, 1080p and 4K delivery | Fast drafts before the final take | Audio references and web search |
| Credits for 5 seconds at 720p with sound | 150 credits | 75 credits | 400 credits |
Kling 4.0 prompts to copy
Press Use this prompt to load one into the tool above. Each prompt shows off one Kling 4.0 strength.
A 30-second chase in four beats
Times in the prompt tell Kling 4.0 what happens when. Set the length to 30 seconds.
See prompt
A 30-second single take. 0 to 8 seconds: a parkour runner in a black hoodie sprints across old brick rooftops at dusk, a drone camera chasing from behind. 8 to 16 seconds: he leaps the gap between two buildings and the camera rises with him over the drop. 16 to 24 seconds: he lands, rolls and runs along a ledge as the city lights come on. 24 to 30 seconds: he stops at the edge and looks out over the glowing skyline while the camera slowly circles him. Sound: wind, distant traffic, his breathing. Cinematic, 35mm film look.
Dialogue with an accent
Lines in quotes, the accent named, the sound described. Keep sound on.
See prompt
Night in a stone cottage by the sea, rain on the window. An old fisherman in a wool sweater sits by the fire with a pipe; a young woman sits across from him holding a mug. He leans in and says in a low Scottish accent: "The sea gives back what it takes. Just never when you want it." She smiles and answers softly: "Then I'll wait." Sound: crackling fire, rain and wind outside. Slow push-in, warm firelight, 35mm film look.
Product reveal with on-screen text
A brand name that stays sharp while the camera orbits. Pick 1080p or 4K.
See prompt
A 15-second luxury watch commercial. A matte black watch with a deep green dial rises slowly on a rotating black pedestal in a dark studio. A thin beam of light sweeps across the case, fine mist drifts, reflections shine on a glossy black floor. The camera orbits the watch once, then pushes in on the dial. The word NOCTIS appears above the watch in thin white serif letters and stays sharp. Sound: a low cinematic bass hit with each light sweep.
Vertical phone clip for social
Set the ratio to 9:16 for TikTok, Reels and Shorts.
See prompt
Vertical 9:16 handheld phone video at a night market. A street food cook tosses noodles high out of a flaming wok, steam and fire rising, the camera close at chest height. He grins at the camera and says: "Hot, fast, and only here tonight." Sound: sizzling wok, crowd chatter. String lights in the background. Natural, candid, real phone footage look.
How to use Kling 4.0 on Aleph AI
Four steps from idea to download.
Choose Kling 4.0 or Flash
Pick the full model for up to 30 seconds and 4K, or Flash for lower-cost drafts at 720p. Then pick a mode: Text to Video, Image to Video, First & Last, Multimodal or Video Edit.
Write the scene
Say who is there, where, what happens and what we hear. For long clips, add times such as 0 to 10 seconds. Put spoken lines in quotes.
Add references and settings
Upload the images or videos the mode asks for and tag them as @Image1 or @Video1. Set the length, resolution and aspect ratio. Sound is on by default.
Generate and download
Press Generate; the cost shows on the button first. The video lands in Recent Tasks, ready to download without a watermark.
Kling 4.0Kling 4.0 FAQ
Release date, price, length, sound and how it compares.
When was Kling 4.0 released?
It was released on October 15, 2026. The Flash version opened earlier, on September 28, 2026, for Kling's Ultra yearly subscribers.
Is Kling 4.0 free?
New Aleph AI accounts start with free credits to try the tools. For more Kling 4.0 videos, longer clips and higher resolutions, upgrade to a plan or credit pack.
How do I get access to Kling 4.0?
Pick the full model or Flash in the tool on this page, write your scene and press Generate. It runs in your browser and you pay with Aleph AI credits.
How long can Kling 4.0 videos be?
Up to 30 seconds in one take, and up to 20 seconds with the Flash version. Choose 5, 10, 15, 20, 25 or 30 seconds in the tool.
What resolution does Kling 4.0 support?
The full model renders 720p, 1080p and 4K; Flash renders 720p. Both take 16:9, 9:16, 1:1 and 21:9.
Does Kling 4.0 make sound?
Yes. It generates stereo sound with the video: ambience, effects, music and dialogue in 9 languages with lip sync. Sound is on by default; switch it off for a silent clip.
What is the difference between Kling 4.0 and Kling 3.0?
The new model makes clips twice as long, 30 seconds instead of 15. It also takes up to 15 references, speaks in stereo in 9 languages, keeps on-screen text readable and edits footage you already have.
Kling 4.0 vs Seedance 2.0: which one should I use?
Use Kling 4.0 for scenes longer than 15 seconds, for 1080p or 4K, and for spoken dialogue. Use Seedance 2.0 to guide a clip with audio references or web search.
Can I use Kling 4.0 on my phone?
Yes. This page works in any mobile browser, with nothing to install. Set the ratio to 9:16 for vertical videos.
Make your first Kling 4.0 video
Write the scene, press Generate and get up to 30 seconds with sound.