Updated: November 5, 2026
Video Model
Kling 4.0 is the follow-up to Kling 3, one of the most popular video models out there, and ships as the full 4.0 plus a lighter Flash version capped at 720p.
The headline changes are middle frames, which let you steer a shot between the start and end frame, and length: up to 30 seconds per generation, double Kling 3’s cap. It also adds 21:9 and stereo audio with multilingual dialogue.
Variants at a Glance
Type |
Modalities |
Max Res. |
Talking Points |
|
|---|---|---|---|---|
| Variant | ||||
| Kling 4.0 | Video | Text-to-Video, Image-to-Video, Omni | 1080p | 30-second single takes, middle frames, stereo audio |
| Kling 4.0 Flash | Video | Text-to-Video, Image-to-Video, Omni | 720p | Start frame, image and video references, audio always on |
Key Features
Generation
- Image-to-Video with Middle Frames: Start from an image, add up to 8 middle frames and an end frame to steer camera moves, shot changes and reveals.
- Omni (Multi-Reference): Combine up to 15 references in one generation, including video clips as input — up to 10 images and 5 videos.
- Complex Motion: More stable in fights, sports, dance and large-scale action than Kling 3.
Audio & Text
- Stereo Audio: Two-channel sound produced in the same pass, with tighter lip-sync than Kling 3.
- Multilingual Dialogue: 9 languages, with accents and dialects like Cantonese and Indian English.
- On-Screen Text: Renders text in the same languages, plus emoji.
Technical Capabilities
Details |
|
|---|---|
| Modalities | Text-to-Video, Image-to-Video (start, middle and end frames), Omni (image and video references) |
| Quality / Resolution | 4.0 (720p, 1080p), Flash (720p) |
| Duration | 4.0: 3–30 seconds, Flash: 3–20 seconds |
| Omni Video Input | 4.0: 3–30 seconds per clip, 30 seconds total, Flash: 3–20 seconds per clip, 20 seconds total |
| Aspect Ratios | Auto, 21:9, 16:9, 9:16, 1:1; 4.0 image-to-video follows the start frame |
| Audio | Stereo, generated in the same pass; always on |
| Languages | English, Chinese, Japanese, Korean, Spanish, Portuguese, German, French, Hindi |
Credit Cost
Credits are charged per second of video generated.
| Variant · Mode | Resolution |
Credits per second |
|---|---|---|
| Kling 4.0 · Text-to-Video | 720p | 175 |
| Kling 4.0 · Text-to-Video | 1080p | 275 |
| Kling 4.0 · Image-to-Video | 720p | 175 |
| Kling 4.0 · Image-to-Video | 1080p | 275 |
| Kling 4.0 · Omni, image references | 720p | 175 |
| Kling 4.0 · Omni, image references | 1080p | 275 |
| Kling 4.0 · Omni, video references | 720p | 225 |
| Kling 4.0 · Omni, video references | 1080p | 325 |
| Kling 4.0 Flash · Text-to-Video | 720p | 100 |
| Kling 4.0 Flash · Image-to-Video | 720p | 125 |
| Kling 4.0 Flash · Omni, references | 720p | 175 |
Kling 4.0 and Kling 4.0 Flash aren’t included in any Unlimited plan, so every generation uses credits. Credit costs can change; check the model in Artlist AI Tools for the current price.
Limitations
- Up to 1080p in Artlist. Kling’s 4K, 10-bit HDR and video editing aren’t offered here yet.
- Flash tops out at 720p and takes a start frame only: no middle or end frames. Use full 4.0 for 1080p or multi-frame control.
- 4.0 always generates sound; there’s no audio-off switch. For silent b-roll, strip the track.
- Text-to-video can be slow, so test ideas at short durations before committing to 30 seconds.
Prompting Tips
- Write long clips as timed beats ("0–8s: wide establishing; 8–15s: slow push to close-up").
- Put dialogue and on-screen text in quotes; name the language.