Short answer: HappyHorse 1.1 and Seedance 2.0 Pro are both multimodal video models on EmpirioLabs that generate synchronized native audio. Choose HappyHorse 1.1 when you want the lowest price up to 1080p and character consistency across several reference images. Choose Seedance 2.0 Pro when you need native 4K, audio-driven generation, or you want to edit and extend an existing clip.
HappyHorse 1.1 vs Seedance 2.0 Pro at a glance
| Feature | HappyHorse 1.1 | Seedance 2.0 Pro |
|---|---|---|
| Maker | Alibaba | ByteDance |
| Inputs | Text, image, up to 9 reference images | Text, image, audio, reference video |
| Modes | Text, image, and reference to video | Text and image to video, plus video edit and extend |
| Native audio | Yes | Yes |
| Max resolution | 1080p | 4K (3840x2160) |
| Price at 720p | $0.14 / second | $0.30 / second |
| Price at 1080p | $0.18 / second | $0.749 / second |
| Price at 4K | Not available | $1.555 / second |
Resolution: 1080p vs native 4K
The clearest split is the top resolution. HappyHorse 1.1 generates up to 1080p. Seedance 2.0 Pro adds native 4K at 3840x2160, so if you are producing footage for a large screen or want maximum detail, Seedance 2.0 Pro is the only one of the two that reaches 4K. For social clips, previews, and most web video, 1080p from HappyHorse 1.1 is plenty and costs far less per second.
Inputs and modes
Both models pick their mode automatically from what you send. HappyHorse 1.1 takes a prompt, a single image, or up to nine reference images, which is its strength: it holds a character consistent across multiple references. Seedance 2.0 Pro takes text, an image, an audio track, or a reference video, so it can drive motion from audio and can edit or extend an existing clip, which HappyHorse 1.1 does not do.
Pricing: what a 5-second clip costs
Both models bill per second of finished video, pay as you go, with no monthly minimum. Here is what a 5-second clip costs on each:
- HappyHorse 1.1 at 720p: $0.70 (5 x $0.14)
- HappyHorse 1.1 at 1080p: $0.90 (5 x $0.18)
- Seedance 2.0 Pro at 720p: $1.50 (5 x $0.30)
- Seedance 2.0 Pro at 1080p: $3.75 (5 x $0.749)
- Seedance 2.0 Pro at 4K: $7.78 (5 x $1.555)
At matching resolutions HappyHorse 1.1 is the lower-priced option, by a wide margin at 1080p. Seedance 2.0 Pro costs more, and in return gives you 4K, audio input, and video editing. Editing or extending a video on Seedance 2.0 Pro is billed at its higher video-input rates.
When to use HappyHorse 1.1
- You are generating at 1080p or below and want the lowest cost per second.
- You need a character or product to stay consistent across shots, using multiple reference images.
- You want text, image, or reference-to-video with native audio in one model.
When to use Seedance 2.0 Pro
- You need native 4K output.
- You want to drive a video from an audio track, or edit and extend an existing clip.
- You want camera control and character consistency for cinematic, multi-shot sequences.
How to call either model
Both use the same OpenAI-compatible asynchronous video API on EmpirioLabs, so switching between them is a one-line change. Submit a job to /v1/videos/generations with the model id (happyhorse-1-1 or seedance-2-0-pro), then poll /v1/jobs/{job_id} until it is done. You can also try both in the playground before writing any code, and see the full rate cards on the pricing page.
Frequently asked questions
Is HappyHorse 1.1 or Seedance 2.0 Pro cheaper?
At matching resolutions HappyHorse 1.1 is cheaper: $0.14 per second at 720p and $0.18 per second at 1080p, versus $0.30 and $0.749 per second for Seedance 2.0 Pro. Seedance 2.0 Pro adds native 4K at $1.555 per second, which HappyHorse 1.1 does not offer.
Which one supports 4K video?
Seedance 2.0 Pro generates native 4K at 3840x2160. HappyHorse 1.1 tops out at 1080p.
Can I edit or extend an existing video?
Yes, with Seedance 2.0 Pro, which accepts a reference video and is billed at its video-input rates. HappyHorse 1.1 focuses on text, image, and multi-reference image-to-video for character consistency.
Do both models produce sound?
Yes. Both HappyHorse 1.1 and Seedance 2.0 Pro generate synchronized native audio.
How do I switch between them in code?
Change the model id in your request to happyhorse-1-1 or seedance-2-0-pro. Both use the same submit-and-poll video API, so nothing else in your integration changes.
