AI video model comparison
Kling 4.0 vs Kling 3.0
Kling 4.0 (by Kuaishou) and Kling 3.0 (by Kuaishou) are both in the Forgeborn video studio. This page puts their settings, inputs and credit prices side by side, straight from the Forgeborn catalog.
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Side by side
| Setting | Kling 4.0 | Kling 3.0 |
|---|---|---|
| Developer | Kuaishou | Kuaishou |
| Length | 3 to 30 seconds, in 1-second steps | 3 to 15 seconds, in 1-second steps |
| Resolution | 720p, 1080p | 720p, 1080p, 4K, Turbo 720p, Turbo 1080p |
| Aspect ratios | 16:9, 9:16, 1:1, 21:9 | 1:1, 9:16, 16:9 |
| Inputs | Text prompt, Up to 10 images, up to 5 videos | Text prompt |
| Frames | Start, end and up to 8 middle frames | Start and end frames |
| Audio | Always included | Optional (priced separately) |
| Credits per clip | From 9 credits (3 s 720p) | From 5 credits (3 s 720p · Silent) |
| Plans | Basic, Creator and Pro | Basic, Creator and Pro |
Credits are Forgeborn credits; the studio shows the exact cost before every generation. Full price tables are on each model’s page.
Which one fits
- Longer clips: Kling 4.0 goes up to 30 seconds, Kling 3.0 up to 15.
- Middle frames: Kling 4.0 takes frames between the start and the end.
- Reference videos: Kling 4.0 takes up to 5.
- Lower starting price: Kling 3.0 (5 credits vs 9 credits).
- Both run in the same Forgeborn studio with the same credits, so you can try one, then the other, on the same prompt.