Kling video length: how long a clip you actually get
Kling 2.0 Standard accepts 5 or 10 seconds — those two lengths, nothing in between.
| Length | Credits | At the Enterprise rate |
|---|---|---|
| 5s | 35 | $0.35 |
| 10s | 70 | $0.70 |
What this changes about your pipeline
Asking for 7 seconds means paying for 10. That rounding is invisible in a per-second comparison and can exceed the gap between models entirely on variable-length work.
If your clips are genuinely variable, a model that bills per second will cost less at the same nominal rate — see AI video API duration limits.
Asking for an unsupported length
Fails validation locally with 400 INVALID_PARAM naming
durationSec. Nothing reaches the upstream provider and no credits move.
Full parameter reference: Kling API parameters.
Models covered on this page
Where these facts come from
- codebase: src/ai/providers/kling.ts — paramsSchema durationSec and pricing()