Kling VIDEO 3.0
Kling VIDEO 3.0 generates up to 15 seconds of continuous video, produces speech and lip sync together with the picture, and this is the series that carries native 4K output. Duration is adjustable from three to fifteen seconds, and it speaks five languages, none of which is Persian.
- 15 seconds
- native 4K
- audio and lip sync built in
Last checked: This is a reference page. It is re-checked against the vendor sources and updated when a new version ships. What changed
4K here means 4K
Kling opened native 4K generation on the 3.0 series on 23 April, and its own announcement is explicit that the output comes straight from the model rather than from an upscaler. Anyone who has worked with upscalers knows the difference: they shift faces, and the character drifts between shots. Generating at the target size does not have that problem. In our video table this is the only model that takes the resolution column outright.
Fifteen seconds, with a free length
Kling own guide sets duration anywhere from three to fifteen seconds. Fifteen is more than Veo eight and less than Seedance thirty, and that middle is exactly where it belongs: enough for an advertising shot or a short sequence, not enough for a whole story.
The audio, and the language it does not have
Audio in this series is native: speech, lip movement and scene sound are generated with the picture, and in a multi-character scene you can point at which character is speaking. The guide counts the speech languages and there are five: Chinese, English, Japanese, Korean and Spanish, plus dialects and accents. Persian is not on that list.
For a Persian-speaking audience that is the most important sentence on this page: this model will not produce a Persian spoken video, and the voice has to be added separately. The same limit applies to the other three models in the table. Not one of them lists Persian among its speech languages.
References: seven images, or four if you supply a video
The reference number is published in the Omni mode guide and it is precise: up to seven images or elements with no video, dropping to four in total once you add a video. An element is several images of the same subject from different angles, up to four of them, combined into one subject, and you can bind a voice sample to it.
One constraint from the same guide carries weight in our table: Omni, the reference-driven path, outputs 1080p and 720p only. So 4K and heavy referencing do not happen in the same generation.
Specifications
Every number here comes from the vendor's own page, with that page linked beside it.
- Input
- text, image, video, audio Source
- Output
- video, audio Source
- Available on
- Web, iOS, Android, macOS, Windows, API Source
- Speech languages
- 5 languages Source
- Longest clip in one pass
- 15 seconds Source
- Resolution ceiling
- 4K Source
- Vertical resolution
- 2,160 lines of vertical resolution Source
- Native audio
- yes Source
- Reference inputs
- 7 reference inputs Source
Using it from Iran
This column carries a date and says how it was checked, because most listicles guess it. Where we have only read a vendor policy page, the note below says exactly that.
- Reachable
- not checked
- Payment
- no working route
- Free tier
- yes
- Measured on
How we checked: Kling publishes no supported-countries list, so we say nothing about network reachability and we have run no test from inside Iran. What we did read is their own user policy: you have to warrant that you are not subject to any sanctions or embargoes. Subscriptions are paid by international card only.
What it is good at
- The only model in our table with native 4K output rather than a post-generation upscale
- Speech and lip sync generated with the picture, with per-character speaker assignment in a crowded scene
- A free duration from three to fifteen seconds instead of one or two fixed options
- Multi-shot storyboarding inside a single generation, with no manual editing
Where it falls short
- Persian is not among its five speech languages, so it will not produce a spoken Persian video by itself.
- Fifteen seconds is short next to Seedance 2.5 thirty and falls short of a full narrative.
- The reference-driven Omni path caps at 1080p, so 4K and heavy referencing cannot be combined.
- Kuaishou publishes no model ID or generation time anywhere we can read; the API documentation is JavaScript-rendered and comes back empty to our server.
- There is no supported-countries list for access from Iran, and payment is by international card only.
Our take
If the output goes to a client and lands on a large screen, this is our pick today; none of the other three has native 4K. If you need a long narrative or many references, go elsewhere. And if you need Persian speech, budget for a voice artist from the start.
Questions people actually ask
How long a video does Kling 3.0 generate
Between three and fifteen seconds, and you set the length yourself. Fifteen is the ceiling for one generation.
Does Kling output 4K
Yes, and it is native rather than upscaled. Kling opened it on the 3.0 series on 23 April. The reference-driven Omni mode, however, goes no higher than 1080p.
Does Kling speak Persian
No. Its own guide counts five speech languages: Chinese, English, Japanese, Korean and Spanish. Persian is not among them, so Persian voice has to be added separately.