Mixer AI
Seedance 2.5 vs HeyGen Video: specs and price
Seedance 2.5 — resolutions: 480p / 720p / 1080p; maximum duration: 30 s.
When to choose Seedance 2.5 and when HeyGen Video
Seedance 2.5
- Resolutions: 480p / 720p / 1080p vs 768p for HeyGen Video
- Maximum duration: 30 s vs 15 s for HeyGen Video
- Generation modes: from text / from first and last frames / from references / video editing vs from text for HeyGen Video
- First frame: Yes vs No for HeyGen Video
HeyGen Video
- Prompt limit: 32,000 characters vs 20,480 characters for Seedance 2.5
Key differences
Specifications
| Spec | Seedance 2.5 | HeyGen Video |
|---|---|---|
| Generation modes | from text / from first and last frames / from references / video editing | from text |
| First frame | Yes | No |
| Last frame | Yes | No |
| Input photos | up to 30 | up to 1 |
| Input videos | up to 10 | No |
| Input audio files | up to 10 | No |
| Input video length | 2–30 s | No |
| Input audio length | 2–30 s | No |
| Shot changes in one clip | In one prompt, by timecodes | No separate mode |
| Output audio | Can be enabled or disabled | No |
| Minimum duration | 4 s | 5 s |
| Maximum duration | 30 s | 15 s |
| Resolutions | 480p / 720p / 1080p | 768p |
| Aspect ratios | 9:16 / 16:9 / 1:1 / 21:9 / 4:3 / 3:4 / adaptive | 9:16 / 16:9 / 1:1 / 4:3 / 3:4 / 21:9 |
| Prompt limit | 20,480 characters | 32,000 characters |
| Price, 1 s (different quality) | — coins · 720p | — coins · 768p |
There is no shared resolution for a direct price comparison, so each price includes its setting and is not highlighted as cheaper.
Price at the same settings
What to compare visually
For a fair A/B test, use the same scene and, where both modes allow it, the same first frame. Inspect motion continuity, character and object consistency, physics and contacts, camera behavior, temporal deformation, in-clip cuts and audio synchronization.
What to inspect with Seedance 2.5
Build a short story, not just a moving picture: up to 30 seconds, recurring characters, your own references and sound.
- Text mode starts without files. Frame mode uses a starting image and, optionally, an ending image.
- Reference mode accepts up to 30 images, 10 videos and 10 audio files. Video and audio each have a separate 30-second total budget.
- Changes of shot can be set with timecodes in one prompt: 0–2 s, then 2–4 s and so on. For exact control of each shot, make each shot a separate generation with the same references.
- A large, conflicting reference set can work against you. Start with the few files that actually matter.
What to inspect with HeyGen Video
Creates videos with sound from a text prompt or a single source image.
- Text: the result is created from a written description.
- Every available setting is shown in the Studio form before launch, and the price follows them.
- The result length is 5 to 15 seconds.
- At most 1 photo as input.
How to run a fair comparison
- Fix the scene, the first frame (if both models accept one), the duration and the resolution.
- Judge motion, not stills: faces, hands and objects should hold across the whole clip and at cuts.
- If sound matters, listen to it separately: dialogue, effects and lip sync differ between models.
- Price a finished clip, not a second: the per-second rate times your real duration, rounded up once.
Sources
Prices, availability and specifications come from the Mixer AI catalog. This is not an independent test: try both models on the same task before choosing.
What we compare
FAQ
Which is cheaper: Seedance 2.5 or HeyGen Video?
The models use different settings, so a direct price comparison would be misleading: the prices of Seedance 2.5 and HeyGen Video are in the table, so compare for the mode you need.
How does Seedance 2.5 differ from HeyGen Video?
Seedance 2.5 — resolutions: 480p / 720p / 1080p; maximum duration: 30 s; first frame: Yes.
How should I compare Seedance 2.5 and HeyGen Video fairly?
Fix the scene, first frame, duration and resolution. Watch the motion across the whole clip and listen to the sound separately. Price the finished clip, not one second.
Are both models available in Mixer AI?
Yes. Both models are in the Mixer AI video catalog; the launch button on the page opens Canvas on a computer and the Studio on a phone. The page exists only for models in the current catalog.
Which model is better?
There is no single winner. First rule out the model that lacks the duration, first or last frame, sound or resolution you need, then compare clips on your own scene. The table highlights only measurable differences.