Kling 4.0 API price, and what each video really costs
Kuaishou (Kling). Price checked 7 Nov 2026; unchanged since we started tracking it. Source: the official pricing page. kling/kling-4.0
Price per second, and the real cost per video that works
Some videos don't work first time and get redone, and you pay for those tries too. The last columns show the real cost per video that works, for an 8-second clip, depending on how many work first time. The rates are examples, not measurements.
| Real cost per video that works, when this many work first time | |||||
|---|---|---|---|---|---|
| Option | Per second | Per 8s clip | 8 in 10 | 6 in 10 | 4 in 10 |
| 720p (no input video) | $0.154 | $1.23 | $1.54 | $2.05 | $3.08 |
| 1080p (no input video) | $0.231 | $1.85 | $2.31 | $3.08 | $4.62 |
| Kling 4.0 Flash 720p | $0.0920 | $0.736 | $0.920 | $1.23 | $1.84 |
Note: 1.0 / 1.5 / 0.6 units/s at the smallest Flagship package's $0.15386/unit ($500 for 3,250 units, 2% off). The page doesn't say whether audio is included. Runway resells it at $0.1256/s (720p) with 20% off until 2026-11-30.
Questions
How much does the Kling 4.0 API cost?
From $0.0920 per second (Kling 4.0 Flash 720p), as listed on Kuaishou (Kling)'s own pricing page. Price checked 7 Nov 2026; unchanged since we started tracking it. Prices change often, so check the source before you set your own prices.
What does a video that works really cost with Kling 4.0?
Divide the cost per 8-second clip by the share that work first time. At $0.736 per 8-second clip and 6 in 10 working first time, each video that works costs $1.23, because the redone ones were paid for too.