Text-to-Video · Image-to-Video

Kling 4.0

The full Kling 4.0 model. Turn a prompt into video at up to 1080p, in any length from 3 to 30 seconds, with native stereo audio built in — or guide image-to-video with a first frame, a last frame, and up to 9 keyframes in between.

About the model

Kling 4.0

Kling 4.0 is the full-quality Kling 4.0 model and the newest video model we offer. It generates cinematic video from a natural-language prompt at 720p or 1080p, in any whole-second length from 3 to 30 seconds, with synchronized stereo audio — dialogue, music, and sound effects — generated alongside the picture. Its image-to-video mode gives you real control over the story: set the first frame, an optional last frame, and up to 9 keyframes the video passes through in order.

Simple per-second pricing. Kling 4.0 bills purely per second with no per-run fee — a 5-second 720p clip is 157 credits. Audio, last frame and keyframes are all included at no extra cost. Need something quicker and cheaper? Try Kling 4.0 Flash.

Why choose this?

First, last & keyframes

Up to 10 frames in total — direct exactly where the shot starts, passes through, and ends.

Native stereo audio

Speech, music, and sound effects generated in sync with the video — always included.

Any length, 3–30 seconds

Pick the exact second count you need — and pay only for that length.

Full HD 1080p

Render in 720p for drafts or 1080p for the final cut.

Cinematic 21:9 and more

Landscape, portrait, square, or ultra-wide 21:9 — or let image-to-video match your first frame.

No per-run fee

Priced purely per second with no per-run fee, so every length is priced the same way.

Kling 4.0 Pricing

Duration	720p	1080p	Duration	720p	1080p
3s	95	141	17s	534	799
4s	126	188	18s	566	846
5s	157	235	19s	597	893
6s	189	282	20s	628	940
7s	220	329	21s	660	987
8s	252	376	22s	691	1034
9s	283	423	23s	723	1081
10s	314	470	24s	754	1128
11s	346	517	25s	785	1175
12s	377	564	26s	817	1222
13s	409	611	27s	848	1269
14s	440	658	28s	880	1316
15s	471	705	29s	911	1363
16s	503	752	30s	942	1410

Cost is 31.4 credits per second at 720p or 47 at 1080p, rounded up to the nearest whole credit, with no per-run fee. Audio, last frame and keyframes are included. Credits are only charged when a generation starts.

Choose your credit package

$3.00

300 credits

$0.0100 per credit

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$30.00

3,030 credits

$0.0099 per credit +30 bonus

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$100.00

10,300 credits

$0.0097 per credit +300 bonus

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$400.00

41,500 credits

$0.0096 per credit +1,500 bonus

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Transparent, pay-as-you-go

Bigger top-ups earn bonus credits. No subscriptions, no hidden fees — credits never expire.

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