Video models
Kling 4.0 vs Kling 4.0 Flash
Both run in Pixie Studio, so you can try each with the same prompt. Here's how they differ, from Pixie's own price list.
The short answer
- At 720p, Kling 4.0 Flash costs less: 20 Sparks a second against 30 (5 seconds: about $1.00 against $1.50).
- Kling 4.0 makes longer clips: up to 30 seconds, against 20 for Kling 4.0 Flash.
- Kling 4.0 goes up to 1080p; Kling 4.0 Flash up to 720p.
- Only Kling 4.0 can end on a picture you choose.
- Kling 4.0 is Pro quality and Kling 4.0 Flash is Standard.
Side by side
| Kling 4.0 | Kling 4.0 Flash | |
|---|---|---|
| Maker | Kuaishou | Kuaishou |
| Quality tier | Pro | Standard |
| Price at 720p | 30 Sparks/s ($1.50 for 5 s) | 20 Sparks/s ($1.00 for 5 s) |
| Price at 1080p | 48 Sparks/s ($2.40 for 5 s) | Not offered |
| Clip length | 3 to 30 seconds | 3 to 20 seconds |
| Makes sound | No | No |
| Starts from | A written prompt; A start picture, and an end picture to land on; References: up to 10 pictures, 5 videos (30 s of video in all) | A written prompt; A start picture to animate; References: up to 10 pictures, 5 videos (20 s of video in all) |
| Shapes | 16:9, 9:16, 1:1, 21:9 | 16:9, 9:16, 1:1, 21:9 |
| Free plan | Paid plans | Paid plans |
Which to use
Big action and camera moves, up to 30 s; frames and references. Best at action scenes and realistic footage.
Quick, low-cost Kling 4.0 with image and video references. Best at action scenes.
Not sure? Leave Create on Auto: Pixie picks a model for each shot from what it needs (sound, references, length) and its budget.
Join the waitlist to try it
Run the same prompt on each and keep the one you like. The price shows first.