Kling 4.0 AI Video Generator

What Kling 4.0 does well

A whole scene with sound in one clip

Kling 4.0 makes clips of up to 30 seconds in one generation, long enough for several actions in a row and a few lines of dialogue.

Write the scene as a sequence and give rough timings where they matter: "the waitress pours the coffee; at second 12 the woman starts her story; at second 20 the man bursts out laughing".

Kling says voices, dialogue and picture stay in sync, in stereo. Write spoken lines in quotation marks, in the language they should be spoken in.

Longer clips cost more, so test the idea at a shorter length first.

Cinematic film still, two friends mid-conversation in a red vinyl booth of a 1950s-style American diner at night, the man laughing as the woman leans in to tell a story, a waitress pouring coffee beside them, rain streaking the window, neon "DINER" sign glowing outside, warm practical lights, 35mm film look.

Keyframes that set each story beat

In the Multi-Frame reference mode you add up to 10 images in story order. The first image opens the clip, the last one closes it, and the ones between appear in that order.

Kling uses these keyframes to fix character states, scene changes and how the story moves on.

How to set it up:

• Switch the reference mode to Multi-Frame.
• Add the frames in order, cropped to the same aspect ratio.
• Describe what happens between them and when, for example "by second 8 she reaches the bridge".

For a plain start and end, First & Last Frame mode takes one or two images.

Cinematic photo of a film editor's desk at night, a large monitor showing a video timeline with a row of four keyframe thumbnails of the same surfer in a yellow wetsuit: paddling out at dawn in Malibu, popping up on a wave, riding inside a glowing barrel, walking out of the sea at sunset, the full-screen preview above showing him inside the barrel, warm desk lamp, soft monitor glow, shallow depth of field.

Reference images and videos in one prompt

Kling 4.0 combines up to 10 reference images and 5 reference videos in one generation. Each can supply something different: a face, a costume, a place, a motion or a camera move.

Say what each reference is for, by its order: "keep the face, hair and white suit of the woman in the first image; follow only the camera move of the first video, not its people or setting".

Kling warns that a reference without a stated purpose is used however the model sees fit. Reference videos have a length limit in total, so trim them to the part you need.

On Zero Kit, reference videos come from videos already in a conversation.

Kling 3.0 Omni takes fewer images and a single reference video.

Cinematic photo of a creative studio table, a printed portrait of a red-haired woman in a white tailored suit and a grey pencil sketch of a tango dancer mid-turn pinned side by side on a corkboard, in front of them a large tablet showing the same red-haired woman in the same white suit dancing tango with a partner in a grand Buenos Aires ballroom under crystal chandeliers, warm light, shallow depth of field.

How to write prompts for Kling 4.0

1. Kling suggests building a Kling 4.0 prompt in four parts: what each reference is for, the overall setting and style, the events in order, then the sound.

2. Name each reference by its order and purpose, such as "the woman in the first image" or "the camera move of the first video", and say what to leave out.

3. With keyframes, describe the change between frames and when it happens: "from the first frame the door opens; by second 6 we are inside the hall from the second frame".

4. Write dialogue in quotation marks, in the language it should be spoken in, and describe ambience and sound effects next to the action that makes them.

5. Swap vague words like "premium" or "epic" for concrete light, materials, framing and motion, then test a short clip at a lower resolution before the full take at 1080p.

Videos made with Kling 4.0

• 

  Parkour across Lisbon rooftops

  Generated with Kling 4.0

  A single continuous handheld shot following a parkour runner across the sunlit terracotta rooftops of Lisbon: he vaults a chimney, leaps a gap between buildings, lands in a roll and keeps running, pigeons scattering, the camera keeping pace right behind him, the river and old town glittering below.

• 

  A spin on the ice at night

  Generated with Kling 4.0

  A single continuous shot of a figure skater in a red dress on an outdoor ice rink in Central Park at night: she glides, launches into a spinning jump and lands cleanly, snow falling through the lights, the Manhattan skyline glowing behind, the camera orbiting smoothly around her.

Sample prompts to try with Kling 4.0

• 

  Backflip over the Alps

  Cinematic sports still, a freestyle snowboarder frozen mid-backflip against a deep blue sky above a powder slope in the Swiss Alps, a long arc of snow spraying from the board, jagged peaks and a tiny chalet far below, crisp winter sunlight, ultra-sharp action photography, high shutter speed.

• 

  A 1997 birthday on camcorder

  1990s camcorder home video still, a backyard birthday party in a California suburb, a seven-year-old girl blowing out candles on a frosted cake while cheering kids in party hats crowd around the picnic table, a golden retriever under the table, VHS color bleed, soft scan lines, slight overexposure, an orange date stamp "JUN 14 1997" in the lower right corner.

• 

  A felt knight on a felt dragon

  Stop-motion felt animation still, a tiny wool knight in a red cape rides a friendly felt dragon over a patchwork of green Scottish highlands, a felt castle on a hill, cotton-ball clouds, a loch made of shimmering blue fabric, visible stitches and fiber texture, warm handmade miniature set, soft studio lighting.

• 

  Rain in a neon future city

  Cinematic cyberpunk still, a woman in a translucent raincoat walks through a rain-soaked street in a futuristic Los Angeles at night, towering holographic billboards and magenta-cyan neon reflected in deep puddles, flying cars streaking overhead, steam rising from vents, anamorphic lens flares, Blade Runner mood.

Sample images are illustrative; results vary by model.

Kling 4.0 specs and pricing

Every price below comes from the live price list, so it changes here as soon as rates change. Credits are charged per image, or per second of video.

Kling 4.0 limitations

• Sound is always on: Kling 4.0 has no switch for it, so mute or replace the track in an editor when you need a silent clip.

  You cannot upload music or sound effects. Describe them in the prompt instead. Kling's voice profiles, saved elements and video editing are not available on Zero Kit.

• The editor on this page takes images only. On Free and above, a reference video goes in from a video that is already in a conversation.

  A clip made from keyframes takes the shape of its first frame, so the aspect ratio setting does not apply to it.

  Zero Kit converts uploads to a format Kling accepts, but each image still needs at least 300 pixels on each side and a shape between 2:5 and 5:2, or the request is rejected.

• A long clip leaves more room for faces, hands and small lettering to drift. Check every second before you publish, and split a scene into shorter clips when one part keeps going wrong.

  The same prompt gives a different clip each time, so keep the take you like.