Kling 4.0 vs Kling 3.0 Pro
Both run on one Varosity key, over the API or from your agent, at the provider's list price with no markup. Failed renders are never billed.
| Feature | Kling 4.0 | Kling 3.0 Pro |
|---|---|---|
| Price on Varosity credits | $0.157/s | $0.168/s |
| An 8-second request | $1.26 (8s produced) | $1.68 (10s produced) |
| Clip lengths | 3–30s | 5, 10s |
| Native audio | Yes | Yes |
| Aspect ratios | 16:9 · 9:16 · 1:1 · 21:9 | 16:9 · 9:16 · 1:1 |
| Inputs | text-to-video · image-to-video | text-to-video · image-to-video |
| Your own provider key | No (Varosity credits only) | Yes, at the provider's list price (same as Credits at default settings) |
| Trade-offs | slow: a 5s clip can take about 10 minutes · 720p only | — |
| Model ID | ws-kling-4.0 | kling-3.0 |
Pick Kling 4.0 for
Kling 4.0, Kling's newest model, on Credits today: 720p clips with native stereo audio and single takes of 3 to 30 seconds.
Instead: kling-3.0 for fast 5 or 10s Kling clips; veo-3.1 for 4-8s lip-sync talking heads; grok-imagine-video for cheap audio clips up to 15s. Pick another model when the result is needed within a few minutes.
Kling 4.0 details and examplePick Kling 3.0 Pro for
Cinematic motion and dialogue close-ups with native audio, 5 or 10s, strong character consistency across shots.
Instead: veo-3.1 for 4-8s lip-sync talking heads; kling-3.0-replicate only if fal is down (same model, costs more).
Kling 3.0 Pro details and example