Kling 4.0 AI Video Generator, Try for $1

Kuaishou · Kling AI video models

Kling 4.0 AI video generator: long takes from your first and last frame

Kling 4.0 is Kuaishou's newest video model. In Neurohelper AI you start from your own image: set the first frame, add a last frame if you want to lock the ending, describe the motion, and get a single take from 3 to 30 seconds at 720p or 1080p. Need quick drafts first? Kling 4.0 Flash animates a first frame at 720p, from 3 to 20 seconds.

First + last frame3–30 s720p or 1080pKling 4.0 Flash

Try Kling 4.0 for $1 See the examples

Made in Neurohelper AI with Kling 4.0 from a first and a last frame.

Kling 4.0First frame (required) + optional last frame · 3–30 s · 720p or 1080p.

Kling 4.0 FlashFirst frame only · 3–20 s · 720p. Use it to test motion and timing before a final Kling 4.0 render.

Made in Neurohelper AI

Kling 4.0 examples

First frame: a runner tying her shoe on a hill above the city at sunset — First frame · sunset

Last frame: the same runner on the hill, the city lit up at night — Last frame · night

Kling 4.0 first and last frame: empty loft to furnished (video poster) — From an empty loft to a furnished one: Kling 4.0 animates the change between a first and a last frame.

First frame: an empty loft with large windows — First frame · empty loft (image made with Seedream 5.5)

Last frame: the same loft, furnished — Last frame · furnished loft (image made with Nano Banana 2.1)

Kling 4.0 use cases

What to make with Kling 4.0

Product reveal that ends on the packshot

Use a close-up as the first frame and your final packshot as the last frame, so the clip always lands on the exact shot you need.

Time and place transitions

Go from sunset to night, empty room to finished interior, or sketch to finished product inside one continuous take.

Long takes for social ads

Up to 30 seconds in a single generation leaves room for a hook, a demonstration and an ending without stitching clips.

Animate stills you already made

Generate a key visual with Nano Banana 2.1, Midjourney 8.2 or Seedream 5.5, then bring it to life with Kling 4.0.

Cheap motion tests

Try framing and pacing with Kling 4.0 Flash, then move the winning prompt to Kling 4.0 at 1080p.

Marketing & Sales Use Cases AI Advertising Studio

Start with the $1 trial

Try Kling 4.0 in Neurohelper AI

Use Kling 4.0 next to the other AI models in one workspace.

Try Kling 4.0 for $1

Frequently asked questions

Kling 4.0 FAQ

What is the difference between Kling 4.0 and Kling 4.0 Flash?

Kling 4.0 takes a first frame and an optional last frame and renders 3–30 second clips at 720p or 1080p. Kling 4.0 Flash is the faster, lower-cost tier: it takes a first frame and renders 3–20 second clips at 720p.

Can I set the last frame?

Yes, with Kling 4.0. Add a last frame to control where the shot ends. Kling 4.0 Flash uses only a first frame.

How long can a Kling 4.0 video be?

From 3 to 30 seconds in one generation with Kling 4.0, and from 3 to 20 seconds with Kling 4.0 Flash.

What happened to Kling 3.0?

Kling 4.0 replaces Kling 3.0 in Neurohelper AI. The Kling 3.0 page stays available in the Archive section of the models hub.

One workspace, many models

Ready to try Kling 4.0?

Start the $1 trial and switch between models whenever a task needs it.

Try Kling 4.0 for $1

All AI models Kling 3.0 (archive)