model guide
Seedance 2.5: 30-Second AI Video Model Guide
Seedance 2.5 guide covering 30-second generation, large reference sets, current availability, and how it compares to Seedance 2.0 on Kansova.
TL;DR
ByteDance's Seedance 2.5 extends single-pass generation to 30 seconds with up to 50 reference inputs. Kansova currently offers Seedance 2.0 and will add 2.5 once provider API access and billing are verified.
Who this is for
- Creators who need 30-second narrative clips instead of 5-15 second shots.
- Teams tracking ByteDance's video models and planning migrations.
- Marketers comparing long-form AI video options before committing budget.
Best for / Not best for
Best for
- 30-second storytelling
- Large reference sets
- Long-form ad concepts
- Planning ahead for API availability
Not best for
- Production work needed today
- Guaranteed API access
- Exact on-screen text
- Budget certainty before pricing is published
Parameters
| Parameter | Supported value | Notes |
|---|---|---|
| Max duration | Up to 30 seconds, single pass | Double the Seedance 2.0 ceiling, per ByteDance's announcement. |
| Reference inputs | Up to 50 files | Images, video, and audio references in one generation. |
| Architecture | Built on Seedance 2.0 | Same unified audio-video joint generation system, extended for long-form. |
| Kansova availability | Not yet available | Added once provider API access and per-second billing are verified. |
Pricing
Kansova bills generations in credits. Pro is $19/month for 750 credits; Studio is $39/month for 1,700 credits.
| Generation | Kansova credits | Cost methodology |
|---|---|---|
| Seedance 2.5 | Not yet priced | No public API pricing as of 2026-08-18 |
| Seedance 2.0 on Kansova (today) | 5 credits/sec (480p) / 10 credits/sec (720p) | Shown before generation |
Comparison
| Dimension | Seedance 2.5 | Seedance 2.0 | Minimax H3 | Sora 2 |
|---|---|---|---|---|
| Max duration | 30 seconds | 15 seconds | 15 seconds | 20 seconds |
| Kansova access | Pending provider API | Available | Available | Available (deprecating Sep 24, 2026) |
| Reference inputs | Up to 50 files | Up to 12 files | Up to 12 files | Limited |
| Public API pricing | Not published | Priced | Priced | Priced |
| Best workflow | Long-form storytelling | Campaign output | 2K product shots | Premium moments |
Prompt examples
- 01
A glass skincare bottle rises through clear blue water, slow push-in, suspended droplets, premium studio highlights, 9:16. - 02
Slow forward movement toward a modern concrete villa at blue hour, warm interior lights reflected in the pool. - 03
A white sneaker rotates on a matte plinth, soft directional light moves across the material, clean ecommerce campaign. - 04
Macro shot of a watch mechanism starting to move, shallow depth of field, restrained luxury advertising style. - 05
A folded paper sculpture opens into a geometric flower, fixed camera, soft shadows, minimal design film.
Known limitations
- Seedance 2.5 is not yet available on Kansova; provider API access and billing must be verified first.
- Public API pricing has not been published as of 2026-08-18.
- Longer generations increase the chance of drift across scenes; review output before commercial use.
- Announcements may change; verify current status before planning production around 2.5.
Alternatives
Frequently asked questions
Is Seedance 2.5 available on Kansova?
Not yet. Kansova adds new models only after provider API access and real per-second billing are verified. Seedance 2.0 is available today.
What is new in Seedance 2.5 vs 2.0?
Single-pass generation extends to 30 seconds, reference inputs grow to up to 50 files, and ByteDance positions it for long-form storytelling on the same architecture.
How much will Seedance 2.5 cost?
No public API pricing has been published as of 2026-08-18. Kansova will show exact credit costs before any generation once it launches.
Last updated
2026-08-18
Sources and methodology
Parameters were checked against the provider API material supplied to Kansova and the live Kansova controls on 2026-07-06. Reference API costs are planning figures from the supplied provider catalog, not a separate charge billed by Kansova.
- EvoLink API documentation index
Provider documentation used to verify Seedance modes and parameters.
- Kansova product facts
Canonical list of supported workflows and current limitations.
- Kansova pricing
Current subscription and monthly credit allowances.