Video models
Kling 4.0 Flash vs LTX-2.5 Pro
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 Flash makes longer clips: up to 20 seconds, against 10 for LTX-2.5 Pro.
- Only LTX-2.5 Pro makes its own sound; the other is silent (add music or a voice in Sound).
- LTX-2.5 Pro goes up to 1080p; Kling 4.0 Flash up to 720p.
- Only Kling 4.0 Flash takes reference pictures or videos, to keep a character or a move.
- Only LTX-2.5 Pro can end on a picture you choose.
- Kling 4.0 Flash is Standard quality and LTX-2.5 Pro is Pro.
Side by side
| Kling 4.0 Flash | LTX-2.5 Pro | |
|---|---|---|
| Maker | Kuaishou | Lightricks |
| Quality tier | Standard | Pro |
| Price at 720p | 20 Sparks/s ($1.00 for 5 s) | 30 Sparks/s ($1.50 for 5 s) |
| Price at 1080p | Not offered | 48 Sparks/s ($2.40 for 5 s) |
| Clip length | 3 to 20 seconds | 6, 8 or 10 seconds |
| Makes sound | No | Yes |
| Starts from | A written prompt; A start picture to animate; References: up to 10 pictures, 5 videos (20 s of video in all) | A written prompt; A start picture, and an end picture to land on |
| Shapes | 16:9, 9:16, 1:1, 21:9 | 16:9, 9:16 |
| Free plan | Paid plans | Paid plans |
Which to use
Quick, low-cost Kling 4.0 with image and video references. Best at action scenes.
Clean product and motion-graphics shots, with sound. Best at product shots and stylized looks.
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.