Kling VIDEO 3.0
Kling VIDEO 3.0 generates up to fifteen seconds of continuous video, produces speech and lip movement synchronized with the picture, and this is the series whose architecture carries native 4K output. Generation length is adjustable across a three-to-fifteen-second range, and five speech languages are supported, none of which is Persian.
- Fifteen-second length ceiling
- Native 4K output
- Native speech and lip sync
Last checked: This is a reference page. It is re-checked against the vendor sources and updated when a new version ships. Change log
The 4K specification here genuinely means 4K
Kling activated native 4K generation on the 3.0 series on 23 April, and its official announcement records that this output comes directly from the model rather than from a post-generation upscaling process. This distinction is clear to anyone who has worked with upscalers: upscaling processes shift facial detail and character continuity drifts between shots, while direct generation at the target size does not carry that failure mode. In this reference video category table, this is the only model that captures the resolution column in full.
A fifteen-second ceiling, with adjustable length
Kling official guide specifies generation length across a three-to-fifteen-second range. Fifteen seconds exceeds Veo eight-second ceiling and falls short of Seedance thirty-second ceiling, and its real operating position sits exactly in that middle band: sufficient for an advertising shot or a short sequence, insufficient for a complete narrative.
The audio, and the language outside its coverage
Audio in this series is generated natively: speech, lip movement, and scene sound are produced together with the picture, and in a multi-character scene the speaking character can be explicitly assigned. The speech languages are listed in the official guide and number five: Chinese, English, Japanese, Korean, and Spanish, along with their dialects. Persian is not recorded on that list.
For a Persian-language deployment, this is the most load-bearing line in this document: this model does not produce a spoken Persian video, and voice-over must be handled through a separate pipeline. The same constraint applies to the other three models in this category table; none of them records Persian among its speech languages.
Reference inputs: seven images, or four if a video is supplied
The reference-input figure is specified in the Omni configuration guide, and it is precise: up to seven images or elements with no video supplied, dropping to a total of four once one video is added. An element is defined as several images of the same subject from different angles (up to four), merged into one subject, with the option to bind a voice sample to it.
One constraint recorded in the same guide carries weight in this reference table: the Omni configuration, the reference-driven path, outputs only 1080p and 720p. So native 4K output and heavy reference input cannot be combined in a single 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 no claim about network reachability is recorded, and no test has been run from inside Iran. What has been documented is the vendor own user policy: the user must warrant they are not subject to any sanctions or trade embargo. Subscription payment is possible exclusively via international card.
Documented strengths
- The only model in this table with native 4K output rather than a post-generation upscale
- Speech and lip sync generated together with the picture, with per-character speaker assignment in a crowded scene
- Adjustable generation length across a three-to-fifteen-second range, rather than one or two fixed options
- Multi-shot storyboarding within a single generation pass, with no manual editing required
Known weaknesses and limits
- Persian is not among its five specified speech languages, so it does not directly produce a spoken Persian video.
- The fifteen-second ceiling is short next to Seedance 2.5 thirty-second ceiling and falls short of a complete narrative.
- The reference-driven Omni path caps at 1080p, so native 4K output and heavy reference input cannot be combined in one generation.
- Kuaishou publishes no model id or generation time on any accessible source; the API documentation is JavaScript-rendered and returns empty to our measurement server.
- No supported-countries list is published for reachability from Iran, and payment is possible exclusively via international card.
Technical verdict
If the output must be delivered to a client and displayed on a large screen, this model is the right pick in this table today; native 4K output is not built into any of the other three models. If the workload requires a long narrative or heavy reference input, another option fits better. And if Persian speech is required, a separate voice-over pipeline should be budgeted into the deployment plan from the start.
Frequently raised questions, with documented answers
How many seconds of video does Kling 3.0 generate
Between three and fifteen seconds, with the length directly adjustable. Fifteen seconds is the ceiling for a single generation pass.
Does Kling produce 4K output
Yes, and it is native rather than upscaled. Kling activated this capability on the 3.0 series on 23 April. The reference-driven Omni configuration, however, does not exceed 1080p.
Does Kling speak Persian
No. Its official guide lists five speech languages: Chinese, English, Japanese, Korean, and Spanish. Persian is not among them, and Persian voice-over must be handled through a separate pipeline.