Kling 4.0 Guide: Features, Pricing and Prompts

Kling 4.0 is Kuaishou's newest video model: in Flick it turns a start frame, or up to 10 reference images, into one shot of 3 to 30 seconds with stereo sound, at 720p or 1080p.

An ink drawing of a boom microphone hanging from its pole

Kling 4.0 came out on October 15, 2026 and reached Flick on October 26, and most guides so far repeat the announcement instead of showing a run. A model billed by the second has to earn its price before a film depends on it: one 30 second take at 1080p costs 1,410 credits in Flick. So Zoey ran Kling 4.0's headline feature in Flick, one 30 second shot in a single pass from one start frame, and ran the same prompt and frame on Seedance 2.5 Final beside it. This Kling 4.0 guide gives what the model does, what it costs, the exact prompt and what came back, frame by frame.

Kling 4.0 runs on Flick's Standard plan and up.

What is Kling 4.0?

Kling 4.0 is a video model from Kuaishou's Kling AI that animates a start frame or a set of references into a single shot of up to 30 seconds, with sound generated alongside the picture.
Kling 4.0 in Flick, from the app's model config on October 27, 2026, and Kuaishou's launch announcement
Kling 4.0 in Flick
MakerKuaishou (Kling AI)
ReleasedOctober 15, 2026
In Flick sinceOctober 26, 2026
Ways to use itImage to Video, Omni Reference and Edit Video
Shot length3 to 30 seconds, any whole second
Resolution720p or 1080p
End frameYes, optional
ReferencesUp to 10 images and 5 video clips
Aspect ratioFollows the start frame; Omni Reference offers 16:9, 9:16, 1:1 or 21:9
SoundStereo, made with every shot
PromptUp to 8,000 characters
Price31 credits a second at 720p, 47 at 1080p
Picker estimateabout 5 minutes
PlanStandard and up
Where these figures come from

Settings, limits, prices and plans are read from Flick's model config. The release date and the Omni Reference and keyframe limits below are from Kuaishou's launch announcement of October 19, 2026.

  • Kuaishou describes up to 15 reference assets in Omni Reference; Flick's node takes 10 images and 5 clips.
  • Kuaishou describes up to 10 keyframes; Flick's Image to Video node takes a start frame and an optional end frame.
  • Other sites list 4K and HDR output; Flick offers 720p or 1080p, and we did not test anything else.

How much does Kling 4.0 cost in Flick?

Kling 4.0 is billed by the second: 31 credits a second at 720p and 47 at 1080p, so a 5 second shot at 1080p costs 235 credits.
Kling 4.0 prices in Flick, in credits, from the app's model config on October 27, 2026
What you makeAt 720pAt 1080p
Each second3147
A 5 second shot, the default155235
A 30 second shot, the longest9301,410
  • Edit Video: 56 credits for each second of the clip you edit, which can run 3 to 30 seconds.
  • Omni Reference with a video attached: the rate becomes 28 credits a second at 1080p, counted on the shot plus the reference clips and at least twice the shot's length.
  • Plans: Kling 4.0 needs the Standard plan, from $20 a month with 2,500 credits.

How do you use Kling 4.0 in Flick?

Add a video node, pick Kling 4.0, connect a start frame or references, set the length and resolution, and write one shot with its sound into the prompt.
  1. 1Pick a way in

    Choose Image to Video to animate one still, Omni Reference to build a shot from characters and places, or Edit Video to change a clip you already have.

  2. 2Connect the frames

    Connect a finished start frame, plus an end frame when the shot must land on a set picture, because Kling 4.0 animates what you give it rather than inventing the scene.

  3. 3Set length and size

    Pick any length from 3 to 30 seconds and 720p or 1080p, and check the credit total on the node before you run, since every second is billed.

  4. 4Write the shot

    Describe one camera move, the action in order, any spoken line in quotes and the sounds you want, because the picture and the stereo sound come from the same prompt.

Can Kling 4.0 hold one long take?

In our test, Kling 4.0 made one 30 second shot with no cut, moving from behind a boy on a beach round to his face, and kept his hair and coat the same throughout, though the lamb he holds slips out of view in the middle.

Kling 4.0's longest shot in Flick is 30 seconds in one pass, twice the longest Kling 3.0 shot, so the test asks for one shot at that length from a single start frame, with this prompt:

Handheld camera movement. Record a boy holding his lamb, watching the tide roll in and out. Then the camera turns toward his face as he gazes into the distance, with the sunset casting a warm glow across his face.
A boy in a herringbone coat seen from behind holds a white lamb to his shoulder on a dark beach
The start frame, a Flickpedia style imageZoey Z. · Kling 4.0 tests
A boy holding a white lamb watches waves roll up a black sand beach at dusk, then turns toward the camera
Start frame: A boy holding a white lamb watches waves roll up a black sand beach at dusk, then turns toward the camera
Start frame
00:30
Kling 4.0, one take at full length and 1080pZoey Z. · Kling 4.0 tests · Kling 4.0 · Image to video
  • One shot, no cut: the file runs 30.04 seconds at 1924 × 1076 and 24 frames a second, and a scene change scan finds no cut.
  • The first half follows the prompt's first beat: the camera stays behind his shoulder while foam rolls up the black sand toward him and a wave breaks offshore.
  • The second half turns to his face: the camera moves round to his side and ends in front of him, so the land and a band of orange sunset sit behind him.
  • What held: his brown hair and herringbone coat look the same from the first frame to the last.
  • What drifted: the lamb drops out of view behind his shoulder for a few seconds mid-shot and reappears in his arms, looking more clearly like a lamb than in the start frame.
  • The light: the sunset glows on the horizon behind him rather than across his face, which stays in soft dusk light.
  • Sound: the track is stereo, and its left and right channels differ.

The same prompt and frame on Seedance 2.5 Final

A boy holds a white lamb on his shoulder on a beach, then the shot ends on his face in warm golden light
Start frame: A boy holds a white lamb on his shoulder on a beach, then the shot ends on his face in warm golden light
Start frame
00:30
Seedance 2.5 Final, the same prompt, start frame and lengthZoey Z. · Kling 4.0 tests · Seedance 2.5 · Image to video

Seedance 2.5 Final read the same prompt differently: the camera stays close behind him with the lamb in view the whole time, the sea stays a distant line, and the shot ends on a close-up of his face in warm golden light, so one prompt can give two quite different long takes.

What else can Kling 4.0 do in Flick?

Besides animating one start frame, Kling 4.0 in Flick can land on an end frame, build a shot from references in Omni Reference and edit a clip you already have.
  • End frame: Image to Video takes an optional end frame, so a shot can start and finish on pictures you chose.
  • Omni Reference: cite up to 10 images and 5 video clips in the prompt by number, at 16:9, 9:16, 1:1 or 21:9.
  • Edit Video: restyle a clip, replace an object or change the setting at 1080p, with the clip's length kept, for clips of 3 to 30 seconds.

We have not tested these three yet, so this guide shows no results for them.

How do you write a good Kling 4.0 prompt?

Write the shot as a director would call it: the camera move, the beats in the order they happen, where the light falls and the sounds you want.
  1. 1. Name the camera move

    Say how the camera moves and when it turns, as the test prompt did with a handheld move that turns toward his face, because that turn is what shaped the second half of the shot.

  2. 2. Give a long take beats

    List what happens in order with enough beats for the length, since our two beats over the full length were stretched by a slow move round the boy and the lamb slipped out of view in between.

  3. 3. Place the light

    Say where the light comes from as well as its colour, because the prompt asked for a warm glow across his face and Kling 4.0 put the sunset behind him instead.

  4. 4. Write the sound in

    Describe the sounds you want and what to leave out, such as music or voices, because Kling 4.0 makes sound with every shot and Flick has no switch to turn it off.

Kling 4.0 FAQ

What is Kling 4.0?

Kling 4.0 is a video model from Kuaishou's Kling AI, launched on October 15, 2026. In Flick it animates a start frame, builds a shot from up to 10 reference images, or edits an existing clip, with stereo sound in every shot.

How long can a Kling 4.0 video be?

A Kling 4.0 shot in Flick runs 3 to 30 seconds, in any whole second, made in one pass. Kling 3.0 Pro stops at 15 seconds.

How much does Kling 4.0 cost?

In Flick, Kling 4.0 costs 31 credits a second at 720p and 47 at 1080p. A 5 second shot is 155 or 235 credits, and a 30 second shot at 1080p is 1,410.

Can I use Kling 4.0 for free?

Kling 4.0 in Flick needs the Standard plan or higher, from $20 a month. Flick gives 100 credits when you sign up, which you can spend on the image models that make start frames.

Does Kling 4.0 make sound?

Yes. Kling 4.0 makes stereo sound with every shot, including spoken lines written in quotes, and Flick shows no switch to turn it off.

What resolution is Kling 4.0 in Flick?

Kling 4.0 in Flick renders at 720p or 1080p. Reports of 4K and HDR output come from Kuaishou's wider rollout, and Flick does not offer them for Kling 4.0.

Can Kling 4.0 edit a video I already have?

Yes, with Edit Video: Kling 4.0 restyles a clip, replaces an object or changes the setting at 1080p, keeps the clip's length, and costs 56 credits for each second of the source.

How is Kling 4.0 different from Kling 3.0?

In Flick, Kling 4.0 makes shots of 3 to 30 seconds in any whole second, where Kling 3.0 Pro offers 3, 5, 10 or 15 seconds, and adds Omni Reference and Edit Video under the same name. A 5 second shot with sound at 1080p costs 235 credits on Kling 4.0 and 168 on Kling 3.0 Pro.

More on Kling in Flick

Films in this guide

The test shots are Zoey's own runs on a Flick test canvas, from a Flickpedia style image, with the prompt quoted exactly as it was run. The related pictures come from public Flick team and residency canvases and are credited to their filmmakers. Prices and limits are from Flick's model config on the date above.

Make your first Kling 4.0 shot in Flick

Start frames, references and every Kling model on one canvas, with the prompt from this guide ready to copy.

Make a Kling 4.0 video in Flick

Try for free, no credit card required.

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