HappyHorse 1.1 vs Seedance 2.0 Fast
HappyHorse 1.1 from HappyHorse and Seedance 2.0 Fast from ByteDance, compared on what you can feed them, what they output and what they cost here.
Updated October 30, 2026
The short answer
- Seedance 2.0 Fast has the lower starting price: 4 credits/s (480p, 4s) against 10 credits/s (720p, 3s) for HappyHorse 1.1. At the same resolution the gap can be smaller; see the table below.
- HappyHorse 1.1 goes up to 1080p; Seedance 2.0 Fast tops out at 720p.
- Audio: HappyHorse 1.1 none (silent video), Seedance 2.0 Fast optional.
- Seedance 2.0 Fast accepts reference videos; HappyHorse 1.1 does not.
- Only Seedance 2.0 Fast animates between a first and a last frame.
Specs side by side
| HappyHorse 1.1 | Seedance 2.0 Fast | |
|---|---|---|
| Developer | HappyHorse | ByteDance |
| Inputs | text to video, image to video, up to 9 reference images | text to video, first and last frame, up to 9 reference images |
| Reference uploads | 9 images | 9 images, 3 videos, 3 audio clips |
| Resolutions | 720p, 1080p | 480p, 720p |
| Length | 3–15 seconds | 4–15 seconds |
| Aspect ratios | 16:9, 4:3, 1:1, 3:4, 9:16 | auto, 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 |
| Audio | none (silent video) | optional |
| Lowest price | 10 credits/s (720p, 3s) | 4 credits/s (480p, 4s) |
Price for a short clip
HappyHorse 1.1: 50 credits for 5 seconds at 720p. Seedance 2.0 Fast: 20 credits for 5 seconds at 480p. Every price for every length and resolution is on each model's page; plans and credit packs are on Pricing.
Credits per second at each resolution
| Resolution | HappyHorse 1.1 | Seedance 2.0 Fast |
|---|---|---|
| 480p | not offered | 4 credits/s |
| 720p | 10 credits/s | 8 credits/s |
| 1080p | 13 credits/s | not offered |
At the shortest length. Models that bill per video work out cheaper per second on longer clips.
Which should you choose?
Choose Seedance 2.0 Fast if
- you want the lower price per second
- you want sound generated with the video
- you want to guide motion with a reference video
- you want to set both the first and the last frame
Run HappyHorse 1.1 and Seedance 2.0 Fast on the same prompt
One prompt, the same images, video and audio, up to 4 models at once. Each model is charged its own credits; failed videos are refunded.
Models to compare (2/4)
FAQ
Is HappyHorse 1.1 or Seedance 2.0 Fast better?
It depends on the shot. Seedance 2.0 Fast has the lower starting price: 4 credits/s (480p, 4s) against 10 credits/s (720p, 3s) for HappyHorse 1.1. At the same resolution the gap can be smaller; see the table below. HappyHorse 1.1 goes up to 1080p; Seedance 2.0 Fast tops out at 720p. The fastest way to decide is to run your own prompt on both: the comparison tool sends the same prompt and references to each model at once.
Which is cheaper, HappyHorse 1.1 or Seedance 2.0 Fast?
A 5-second 720p HappyHorse 1.1 video costs 50 credits; a 5-second 480p Seedance 2.0 Fast video costs 20 credits. Higher resolutions and longer clips cost more, and failed videos are refunded.
Can I use the same reference images with HappyHorse 1.1 and Seedance 2.0 Fast?
HappyHorse 1.1: 9 images. Seedance 2.0 Fast: 9 images, 3 videos, 3 audio clips. On the comparison page, inputs a model can't take grey it out instead of sending a job that would fail.
Do HappyHorse 1.1 and Seedance 2.0 Fast generate sound?
HappyHorse 1.1: none (silent video). Seedance 2.0 Fast: optional.
Which is better for vertical TikTok or Reels videos?
Both can make vertical video when 9:16 is in their aspect ratios. HappyHorse 1.1: 16:9, 4:3, 1:1, 3:4, 9:16. Seedance 2.0 Fast: auto, 21:9, 16:9, 4:3, 1:1, 3:4, 9:16. "Set by the model" means it frames the video from your input image.
Can I try HappyHorse 1.1 and Seedance 2.0 Fast on the same prompt here?
Yes. The comparison tool on this page has both models selected: write a prompt, add the same images or reference video if you like, and press Generate. Each model is charged its own credits, and you can add up to two more models.
Sources
Specs and prices come from the models as offered in our generator (updated October 30, 2026). Makers' pages: ByteDance.