Kling 4.0
Vendor-sourced facts
| Fact | Value |
|---|---|
| Vendor | Kuaishou [1] |
| Licence | Proprietary (API/app only) [1] |
| Licence detail | API, web app and mobile app; generally available on kling.ai since October 2026 (early access ran from 2026-09-28) [1] |
| Modes | Text-to-video, Image-to-video, Video edit [1] |
| Release | generally available (feature page live); early access rolled out from 2026-09-28 [1] |
| Max resolution | 4K [1] |
| Max clip duration | 30 s [1] |
| Native audio | Yes [1] |
| Access | API, web app, mobile app [1] |
| Vendor page | https://kling.ai/feature/kling-4-ai-video-generation [1] |
Arena rating: no votes yet. Nothing on this page is a score, a rank or a measurement by us — every value is what Kuaishou publishes, with the page it came from listed under Sources.
Not listed on the Design Arena video board (checked 2026-10-21).[2]
About Kling 4.0
Kling 4.0 is the newest entry in the catalogue and is now generally available: Kuaishou's feature page invites creators to generate with it directly, after an early-access window that opened on 28 September 2026. The vendor publishes the release as October 2026, so the release cell carries the month rather than an invented day. [1]
The advertised envelope is the largest here — up to 4K, single-pass clips of three to thirty seconds, up to ten keyframe images placed along the timeline, up to fifteen combined reference assets including voice, native audio, and 21:9 ultrawide framing, across API, web and mobile. [1] It is also the only catalogue entry with no published price, which is why a spec row is not a recommendation; when the arena opens, votes will be collected on whatever the model actually is on the day.
“Kling 4.0 supports native video generation from 3 to 30 seconds in a single pass. Place up to 10 flexible keyframe images along the timeline. Kling 4.0 supports up to 15 combined reference assets, including images, videos, subjects, and voice references.”
Kuaishou on Kling 4.0 [1]
Want hands-on context before trusting anyone's ranking? Generate your own clips with a multi-model workflow on AIContentDrop: browse the current model roster · review pricing before you commit.
Sources
- Kuaishou — Kling 4.0, vendor documentation https://kling.ai/feature/kling-4-ai-video-generation — checked 2026-10-23
- Design Arena — video leaderboard https://www.designarena.ai/leaderboard/video — checked 2026-10-21
Each [n] above is the vendor page the fact beside the marker was read from, on the date shown. Where a vendor states nothing, the table says “Not stated” and no value is inferred from anywhere else.