Which should you pick?
Seedance 1 Pro Fast is the cheaper job: 50-100 credits against 56-112 credits for Kling V2.1. Those are the credits one complete generation costs, not a headline rate, so they are directly comparable even though the two models bill differently.
At their most expensive settings the gap widens: Kling V2.1 tops out at 112 credits a job versus 100, driven by clip length.
Seedance 1 Pro Fast supports more aspect ratios (6: 21:9, 16:9, 4:3, 1:1, 3:4, 9:16), giving it more format flexibility.
What a job costs
Seedance 1 Pro Fast
50-100 credits
It bills per 5 seconds of output, and the price moves with clip length.
- Price50 credits
Kling V2.1
56-112 credits
It bills a base charge plus a per-second rate, and the price moves with clip length.
- First 5s56 credits
- Each extra second12 credits
All figures are Versely credits. Your plan's credit allowance is on the pricing page.
Spec comparison
| Spec | Seedance 1 Pro Fast | Kling V2.1 |
|---|---|---|
| Provider | ByteDance | Kling |
| Cost per job | 50-100 credits | 56-112 credits |
| Billing | per 5 seconds of output | a base charge plus a per-second rate |
| Max resolution | 1080p | — |
| Aspect ratios | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 | — |
| Durations | 5s, 10s | 5s, 10s |
| Frame rates | — | 24fps, 30fps, 60fps |
| Qualities | 720p, 1080p | — |
| Requires starting image | Yes | Yes |
| Accepts video input | No | No |
| Reference images | — | — |
| Leaderboard | Unranked | #51 in image to video |
| Released | Jun 11, 2025 | May 29, 2025 |
What each one does that the other doesn't
Only Seedance 1 Pro Fast
Nothing the other one doesn't also list.
Only Kling V2.1
advanced, v2.1, high quality
Both list: image to video, image to video.
Leaderboard positions
Versely ranks each capability on its own leaderboard, so a position is only comparable between two models within the same row.
Seedance 1 Pro Fast
Not on a Versely leaderboard yet.
Kling V2.1
- Image to video#51
Frequently asked questions
Which is cheaper, Seedance 1 Pro Fast or Kling V2.1?+
Seedance 1 Pro Fast is cheaper per job: 50-100 credits against 56-112 credits for Kling V2.1.
What can Seedance 1 Pro Fast do that Kling V2.1 can't, or vice versa?+
Only Kling V2.1 lists advanced, v2.1, high quality. Both list image to video, image to video.
How do Seedance 1 Pro Fast and Kling V2.1 bill?+
Seedance 1 Pro Fast bills per 5 seconds of output, and its price moves with clip length. Kling V2.1 bills a base charge plus a per-second rate, and its price moves with clip length. Both are charged in Versely credits.
How long a clip can Seedance 1 Pro Fast and Kling V2.1 generate?+
Seedance 1 Pro Fast supports 5s, 10s; Kling V2.1 supports 5s, 10s.
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