# Kling V4 AI

> Use Kling 4.0 online — Kuaishou's newest AI video model, out Oct 15, 2026. Text, image or Omni Reference to 3–30 s video with stereo sound. First video free.

Website: https://klingv4.com · Full details for AI assistants: https://klingv4.com/llms-full.txt

Last updated: 2026-10-25

## What is Kling 4.0?

Kling 4.0 is the newest AI video model from Kuaishou's Kling AI, available to everyone since October 15, 2026. It turns text, images, video clips and voice samples into 3 to 30 seconds of video with two-channel stereo sound, made in one pass.

Kuaishou offers it in its own Kling AI app. This site runs Kling 4.0 through a commercial API: write a prompt, start from a first frame (and optionally end on a last one), or give it reference images, clips and a voice, then download the MP4. Here it renders at 720P or 1080P; 4K, HDR, video editing and extension aren't offered on this site.

### Kling 4.0 at a glance

- Made by: Kuaishou Technology, through its Kling AI platform. (source: [Kuaishou press release](https://bernama.com/en/press/news.php?id=2622471))
- Released: To everyone on October 15, 2026. (source: [Kling AI release notes](https://kling.ai/release-note/release-notes/Kling_4))
- Early access: From September 28, 2026, for a limited group, starting with Kling 4.0 Flash. (source: [Kling AI blog](https://kling.ai/blog/kling-4-vs-3))
- Length: 3–30 seconds per generation, in 1-second steps; multi-shot by default. (source: [Kling 4.0 user guide](https://kling.ai/quickstart/kling-4-model-user-guide))
- Resolution: 720p, 1080p and 4K in Kling's app; 10-bit HDR at 1080p and 4K is listed as coming soon. (source: [Kling AI release notes](https://kling.ai/release-note/release-notes/Kling_4))
- Aspect ratios: 21:9, 16:9, 1:1, 9:16 and Auto. (source: [Kling 4.0 user guide](https://kling.ai/quickstart/kling-4-model-user-guide))
- Sound: Two-channel stereo, made with the picture; speech in Chinese, English, Japanese, Korean, Spanish, Portuguese, German, French, Hindi and more. (source: [Kling 4.0 user guide](https://kling.ai/quickstart/kling-4-model-user-guide))
- Omni Reference: Up to 15 assets: 10 images, 5 videos (30 s combined), 3 voice profiles from 5–30 s clips, and 7 elements. (source: [Kling 4.0 user guide](https://kling.ai/quickstart/kling-4-model-user-guide))
- Keyframes: Up to 10 keyframe images, first and last frame included. (source: [Kling AI release notes](https://kling.ai/release-note/release-notes/Kling_4))
- Prompt length: Up to 8,000 tokens. (source: [Kling 4.0 user guide](https://kling.ai/quickstart/kling-4-model-user-guide))

Kling is a trademark of Kuaishou Technology. Kling V4 AI is an independent service and is not affiliated with or endorsed by Kuaishou.

## Create a video

Generator: https://klingv4.com/create

1. Describe the shot: Say what happens: subject, action, camera, light and sound. Or start from an example.
2. Add pictures or references: Optional: a first (and last) frame, or reference images, clips and a voice sample to follow.
3. Generate and download: Pick the resolution, length and shape, see the price, and download the MP4 when it's ready.

## When Kling V4 AI is a good fit

- You want to use Kling 4.0 without a subscription or an API key — everything runs in the browser.
- You want to try it free: a new account gets 110 credits (one 5-second 720P video).
- You want to pay per second of video with one-time credit packs (300 credits for $9.99) and see the exact price before each render.
- You need text to video, first/last frame or Omni Reference (up to 10 images, 5 clips and 3 voice samples), 3–30 seconds, with stereo sound generated in the same pass.
- Not a fit: you need 4K, HDR, more than two keyframes, video editing or extension past 30 seconds (Kling's own app offers or plans those), or the lowest per-second price at volume (Kling's official API).

## Models and tools

- [Kling AI](https://klingv4.com/kling-ai): Kuaishou's Kling video models, and which one runs here.
- [Text to video](https://klingv4.com/text-to-video): Describe a shot and get a Kling 4.0 video with sound.
- [Image to video](https://klingv4.com/image-to-video): Start from a picture, optionally end on another.
- [Omni Reference](https://klingv4.com/reference-to-video): Images, clips and a voice guide character, motion and sound.

## Models and prices

### Kling 4.0

- Length: 3–30 s, with sound
- Modes: text to video, first/last frame (image to video), reference images, video and audio
- 720P: 22 credits per second of video (≈ $0.73 at the smallest pack)
- 1080P: 33 credits per second of video (≈ $1.10 at the smallest pack)
- With a reference video: output seconds + the longer of output and reference video, at 14 (720P), 20 (1080P) credits per second
- Reference images: included

## Pricing

- [Credit packs](https://klingv4.com/pricing): one-time packs from $9.99. Failed renders return their credits automatically.

## Guides

- [Kling 4.0 Prompt Guide: Shots, Camera, Sound and References](https://klingv4.com/blog/kling-4-prompt-guide): How to write Kling 4.0 prompts that work: a simple shot structure, camera moves, dialogue and sound cues, @Image1 / @Video1 / @Audio1 references and pacing for 30-second clips.
- [Kling 4.0 vs Kling 3.0: What Changed](https://klingv4.com/blog/kling-4-vs-kling-3): Kling 4.0 against Kling 3.0: 30 seconds instead of 15, up to 10 keyframes, a much larger Omni Reference, stereo sound, more languages and HDR — and what this site offers of it.
- [Kling 4.0 vs Seedance 2.5: Which AI Video Model Should You Use?](https://klingv4.com/blog/kling-4-vs-seedance-2-5): Kling 4.0 against ByteDance's Seedance 2.5: both make 30-second clips with sound. How they differ on resolution, references, editing, API price per second and access, and when to pick each one.
- [Kling AI Pricing Explained: Plans, the Kling 4.0 API and Pay per Second](https://klingv4.com/blog/kling-ai-pricing): What Kling AI costs in October 2026: Kling's own monthly plans and credits, the Kling 4.0 API price ($0.14/s at 720p, $0.21/s at 1080p, still Coming Soon), and how per-second pricing works on this site.

## Privacy and policies

- Uploaded photos and generated videos are private to the account that made them.
- Only use photos of yourself or people who agreed to appear; photos of public figures are rejected.
- [Privacy policy](https://klingv4.com/privacy) · [Terms of service](https://klingv4.com/terms) · [Refund policy](https://klingv4.com/refund-policy) · [Cookie policy](https://klingv4.com/cookie-policy)
- [About](https://klingv4.com/about) · [Contact](https://klingv4.com/contact): support@klingv4.com