Announced September 28, 2026
Kling 4.0
Kling 4.0 is the generation Kling announced on September 28, 2026. Flash opened the same day for Ultra Yearly subscribers. The full model is scheduled for October. This page stays with what Kling has published.
What the announcement covers
A longer single take
One generation runs up to 30 seconds and can be extended. Kling 3.0 stopped at 15 seconds per generation.
Pins along the shot
Up to 10 keyframes, so a long take can be aimed at specific moments.
References and finish
Up to 15 image, video, and audio references. Output is published up to 4K with 10-bit HDR, stereo, and tighter lip sync. Kling has not published a Flash-only spec, so these figures describe the generation.
Kling 4.0 Flash and the full model
| Aspect | Flash | Full Kling 4.0 |
|---|---|---|
| Who can use it | Ultra Yearly subscribers | Not open yet |
| When | September 28, 2026 | October 2026, no day given |
| Published spec | No separate spec | 30 seconds, 10 keyframes, 15 references, up to 4K 10-bit HDR |
| Price and API | Not published | Not published |
Kling has not published Flash duration, resolution, or a price. Empty cells stay empty.
Kling 4.0 and Kling 3.0
Kling 3.0 launched on January 31, 2026. Kling 4.0 was announced on September 28, 2026. The rows use only published figures.
| Aspect | Kling 3.0 | Kling 4.0 |
|---|---|---|
| Released | January 31, 2026 | Announced September 28, 2026 |
| Length | 3–15 seconds | Up to 30 seconds, plus extension |
| Keyframes | No single published cap | Up to 10 |
| References | No single published cap | Up to 15 image, video, and audio |
| Picture | 4K | Up to 4K, 10-bit HDR |
| Sound and API | Native audio; API lists 3.0-era models | Stereo and tighter lip sync; API model not published |
What that changes on a shoot
One take instead of two
A 30-second spot can be one generation instead of two 15-second clips cut together.
A long shot you can aim
Keyframes are the pins. Ten of them is how Kling says a long take stays on the beats you planned.
The same subject across references
Fifteen references are for holding a face, a product, or a voice across the shot. Kling did not publish a quality score for that.
Make a video while wider access is still limited
An Ultra Yearly plan is what Kling uses for Flash. This studio renders a scene from text, a photo, or a reference clip without that plan.
Open the studio