Kling 4.0 Flash: Specs, Limits & Availability
Kling 4.0 Flash is the lighter variant in early access since 28 September 2026: 3–20 second clips at 720p. How it differs from the full model, who can use it.
Last updated: 2026-10-14
What Kling 4.0 Flash is
Flash is the lighter, faster member of the Kling 4.0 family. It opened in limited early access on 28 September 2026, currently for yearly Ultra subscribers inside the Kling app, ahead of the full model's October launch.
Flash vs the full Kling 4.0
| Kling 4.0 Flash | Kling 4.0 (full) | |
|---|---|---|
| Clip length | 3–20 s | 3–30 s |
| Resolution | 720p, 8-bit SDR | up to 4K (1080p on fal at launch); 10-bit HDR coming soon |
| Inputs | text, image, Omni Reference | same, plus up to 10 keyframes |
| Audio | generated | stereo with lip-sync |
| Status | early access (app only) | launching October 2026 |
10-bit HDR and "extend to two minutes" are marked coming soon for the whole Kling 4.0 family, not just Flash.
Is there a Flash API?
No. fal lists Flash alongside the full model as early access; no endpoint or price has been published. This site will treat Flash as a separate catalog entry if fal ships it with its own endpoint.
Try Kling now
You can generate text-to-video and image-to-video clips with Kling 3.0 on this site today; your library labels every clip with the model that rendered it. When Kling 4.0 is published and passes our own test render, we switch it on here — the banner at the top of this page is the live status.
Open the generator →Sources
- Kling AI release notes: Meet All-New Kling 4.0
- fal: Kling 4.0 early access and What is Kling 4.0 (updated 2026-09-29)
- fal model pages for Kling 3.0: v3 standard text-to-video, v3 standard image-to-video
- Community first impressions: r/KlingAI_Videos
Facts above are as of 2026-10-14. Specifications are Kuaishou's published claims until independent tests confirm them.