Kling 4.0Kling 4.0 image to video, online

Kling 4.0 is Kuaishou's newest AI video model, launched in October 2026 after Kling 4.0 Flash opened to early users on 28 September. It makes up to 30-second clips at up to 4K with 10-bit HDR and two-channel stereo audio, and accepts up to 10 keyframes and 15 reference assets. On Vivimo you can use Kling 4.0 image to video in the browser without an API key: upload a photo, describe the motion, and get a 720p video of 5, 10 or 15 seconds for 2 credits per second (Pro pack, $49.99 for 90 credits, one-time).

A woman in a black leather coat on a neon-lit rainy city street at night — AI-generated example

Updated October 27, 2026 · 1 photo · Write your own motion

Quick facts: Kling 4.0 image to video on Vivimo

Model	Kling 4.0 (Kuaishou), image to video
On Vivimo	720p, 5/10/15 s, silent MP4, no watermark
Price	2 credits per second: 10 credits for 5 s
Pack needed	Pro ($49.99, 90 credits, one-time, never expire)
Prompt	Yes, describe the motion in one or two sentences
Free preview	No; use the 480p fast model for free tests
Time	Usually 1 to 4 minutes

Kling 4.0 specs

Length: 3 to 30 seconds in one pass (Kling 3.0: 3–15 s). Resolution: 720p, 1080p and 4K, with 10-bit HDR at 1080p and 4K and a new 21:9 format.

Audio: two-channel stereo with better lip-sync. Control: up to 10 keyframe images and up to 15 reference assets (10 images, 7 subjects, 5 videos). Prompts up to 8,000 tokens.

Kling 4.0 Flash is the faster early-access tier: 3–20 seconds at 720p, 8-bit SDR, first-frame image-to-video.

On Vivimo, Kling 4.0 runs through WaveSpeedAI at 720p, 5–15 s, as silent video; 1080p, 4K, HDR and audio are not offered here.

	Kling 4.0	Kling 4.0 Flash	Kling 3.0
Length	3–30 s	3–20 s	3–15 s
Resolution	720p, 1080p, 4K	720p	720p, 1080p, 4K
HDR	10-bit at 1080p/4K	No (8-bit)	No (8-bit)
Audio	Stereo	Not stated	Mono
Keyframes	Up to 10	First frame	Start and end frame

How to kling 4.0 image to video, online

Upload a photoSharp, well lit; the first frame of your video.
Describe the motionOne or two sentences: action, then camera. E.g. "he walks toward the camera, slow tracking shot".
Make it720p, 5 s by default; 10–15 s also available. 2 credits per second.

Photo tips for the best result

Describe physical action and camera movement, not moods.
One main action per 5 seconds keeps motion clean.
Use a photo that already has the framing you want.
Faces stay closest to the photo with moderate movement.
For free tests, try the 480p fast model on the home page first.

FAQ

When was Kling 4.0 released?

Kling announced the full launch for October 2026; Kling 4.0 Flash opened to limited early access on 28 September 2026.

What is new in Kling 4.0?

Up to 30-second clips, 10-bit HDR at 1080p/4K, stereo audio, up to 10 keyframes, up to 15 reference assets, 21:9 output and targeted video editing.

Can I use Kling 4.0 without a subscription?

Yes, on Vivimo: credit packs are one-time payments and credits never expire. Kling 4.0 uses 2 credits per second at 720p and needs the Pro pack ($49.99 for 90 credits).

How much does a Kling 4.0 video cost on Vivimo?

A 5-second 720p video is 10 credits, 10 seconds is 20 and 15 seconds is 30. With the Pro pack that is about $0.56 per credit.

Is there a free Kling 4.0 trial on Vivimo?

No. Free previews use the 480p fast model. Kling 4.0 is for paid 720p videos.

Does Vivimo support Kling 4.0 audio, 1080p or 4K?

Not yet. Vivimo offers Kling 4.0 image to video at 720p without audio.

Is Vivimo affiliated with Kling?

No. Vivimo is independent and uses Kling 4.0 through WaveSpeedAI's API.