Shortest Kling motion control clip: 1 second costs $0.1575
Kling 3.0 Motion Control on Sume bills $0.1575 per output second with a 1 to 30 second range, so the shortest clip is $0.1575 and the longest is $4.725.
The shortest Kling 3.0 Motion Control clip on Sume is 1 second and costs $0.1575; the longest is 30 seconds and costs $4.725. The public catalog lists the price as $0.1575 per output second, and the output length follows the length of the driving motion video.
What the catalog says
Sume's catalog entry for Kling 3.0 Motion Control (model id kling/3.0/motion-control, also reachable as sume/avatar-1.0/motion-control) gives the price as $0.1575 per output second, built from a Kling list of $0.126 per second times 1.25. It reserves ceil(duration_seconds) times that rate, and duration_seconds can be 1 to 30.
| Item | Value |
|---|---|
| Price | $0.1575 per output second |
| Provider list | $0.126 per second |
| Duration | 1 to 30 seconds |
| Shortest clip | 1 x $0.1575 = $0.1575 |
| Longest clip | 30 x $0.1575 = $4.725 |
| Catalog minimum estimate | 16 cents |
| Catalog maximum estimate | 473 cents |
Cents on the ledger
The catalog states that a reservation is stored in USD micros and rounded up to cents for the balance. So the 1-second clip appears as a 16-cent minimum, and the 30-second clip as 473 cents, which is $4.725 rounded up. This is the reservation, not an extra charge: the amount captured at completion is based on the Sume price.
Why test with a short clip
A 1-second driver is the cheapest way to check that your still image and your motion video URL both work. Because the provider has no duration or resolution knob and the output length follows the driving video, a short driver gives a short output. Five test clips of 2 seconds each cost 5 x 2 x $0.1575 = $1.575. Once the still looks right, send the full driver.
If the driver is longer than 30 seconds, cut it first. A 31-second driver is over the limit.
Kling motion control against other uses of the budget
The most useful comparison is another motion route: H3 Max Recast is $0.375 per second at 768p, so a 1-second Kling clip is cheaper than the 5-second Recast minimum by a wide margin ($0.1575 against $1.875).
Whole-second billing means a driver of 1.0 to 1.0 seconds is the only length that gets no rounding benefit or penalty. A 0.9-second driver is below the 1-second minimum the schema accepts for duration_seconds, so pad or choose a longer clip.
Test list: one still, one 1-second driver, check the URL rules, check the result opens, then scale up.
Sources
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