Seedance 1.0: history, status and what to use instead
Seedance 1.0 was the first generation of ByteDance Seed's Seedance video model family. It is a previous generation with no public API listing on Kie.ai that we can verify, so Seedancee does not currently offer Seedance 1.0 generation. This page records what it was, how the line evolved, and which current model covers each 1.0 use case.
What was Seedance 1.0?
Seedance 1.0 was ByteDance Seed's first publicly named Seedance video generation model. It established the family's approach: prompt-driven and image-driven short clips with a focus on motion quality and prompt adherence, served through ByteDance's own products and partner platforms rather than as downloadable weights. It predates the features people now associate with Seedance, such as native audio generation, multi-image and video referencing, and 30-second one-take generation, all of which arrived with the 1.5 and 2.x releases.
We deliberately keep the description of 1.0 short. ByteDance's current official pages are dedicated to 2.0 and 2.5, and we do not want to reconstruct a spec sheet for a superseded version from secondary sources and present it as verified. The release timeline guide records what is documented with dates and links, and is updated when ByteDance publishes anything new about earlier versions.
How the Seedance line evolved
| Version | Official launch | Where it is served today | On Seedancee |
|---|---|---|---|
| Seedance 1.0 | Earlier generation; date not verified by us | No public Kie.ai listing we can verify | Not offered |
| Seedance 1.5 Pro | 1.x line, before 2.0 | Kie.ai (bytedance/seedance-1.5-pro) | Available |
| Seedance 2.0 | 12 February 2026 | Kie.ai (seedance-2, -fast, -mini) | Available |
| Seedance 2.5 | 31 July 2026 | Kie.ai (bytedance/seedance-2-5) | Available, default |
The practical consequence: if you used Seedance 1.0 for short text-to-video or single-image animation, Seedance 1.5 Pro is the closest active model and adds native audio, 1080p and a fixed-lens option. If you want the current best quality, Seedance 2.0 gives up to 4K for 4–15 seconds and Seedance 2.5 gives 30-second reference-driven generation with editing.
Try the closest current model
The generator is preset to Seedance 1.5 Pro. Switch to 2.0 or 2.5 from the model picker; every option and the credit estimate come from the live model registry. Configuring is free; generating needs a subscription. Seedance 1.5 Pro is on both the Starter and Pro plans, while 2.0 and 2.5 are on Pro.
Current models compared
| Seedance 1.5 Pro | Seedance 2.0 | Seedance 2.5Par défaut | |
|---|---|---|---|
| Idéal pour | Previous-generation text and image-to-video with a fixed-lens option. | High-quality 4–15s shots with up to 4K output and multimodal references. | Longer reference-driven scenes up to 30s with native audio and editing workflows. |
| Durée | 4–12s | 4–15s | 4–30s |
| Résolutions | 480p, 720p, 1080p | 480p, 720p, 1080p, 4k | 480p, 720p, 1080p |
| Formats d'image | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 |
| Entrées de référence | Première/dernière image | Première/dernière image · 9 images · 3 vidéos · 3 pistes audio | Première/dernière image · 30 images · 10 vidéos · 10 pistes audio |
| Audio natif | Oui | Oui | Oui |
| Modifier / prolonger | Non | Non | Oui |
| Vitesse relative | Standard | Plus lent, meilleure qualité | Standard |
| Crédits estimés | 20–257 par génération | 200–3726 par génération | 300–5647 par génération |
| Capacités vérifiées | 2026-09-29 | 2026-09-29 | 2026-09-29 |
Mapping Seedance 1.0 use cases to today's models
- Short prompt-only clips: Seedance 2.0 Mini for drafts, Seedance 2.0 for delivery quality.
- Animating a single image: Seedance 1.5 Pro or 2.0 image-to-video with a first frame; add a last frame if you know where the shot should end.
- Locked-camera product shots: Seedance 1.5 Pro with fixed lens.
- Anything with sound: every active model generates native audio; 1.0 did not.
- Consistent characters across shots: Seedance 2.5 with reference images, which 1.0 could not do.
Example prompts in the 1.0 spirit, on current models
A red kite rises over a windy hillside at dusk, its tail whipping, the string taut against a lavender sky, a small figure below holding the reel. Wide shot, gentle handheld. Sound: wind and the flutter of fabric.
- mode:
- text-to-video
- duration:
- 5s
- ratio:
- 16:9
- resolution:
- 720p
- audio:
- on
Starting from the uploaded still of a lighthouse on a cliff, bring it to life: waves roll in and break against the rocks, the beam sweeps once across the frame, clouds drift slowly. Camera locked. Sound: surf and wind.
- mode:
- image-to-video
- duration:
- 8s
- ratio:
- 16:9
- resolution:
- 1080p
- audio:
- on
- fixed_lens:
- true
Open source, downloads and access
As far as we can verify, ByteDance has not publicly released weights or code for Seedance 1.0 or any later version. There is nothing to download and run locally, and files claiming to be Seedance weights should be treated with suspicion. Access is through ByteDance's own products and hosted APIs; on Seedancee that means the active models above, paid per generation with credits from a Starter or Pro subscription. There are no free trial credits.
Is Seedance open source?
What is and is not publicly released, with official links.
Seedance release timeline
Every documented version with dates and sources.
Seedance 2.5, the current model
30-second reference-driven generation with native audio.
FAQ
Can I use Seedance 1.0 on Seedancee?
No. We have no verified provider endpoint for Seedance 1.0, so we do not offer it. Seedance 1.5 Pro, 2.0 (with Fast and Mini variants) and 2.5 are available.
Is Seedance 1.0 free?
We are not aware of any legitimate free public access to Seedance 1.0 today. Sites advertising it usually run a different model. Seedancee's free page explains what you can do at no cost with the current models and why generating needs a subscription.
What replaced Seedance 1.0?
The 1.5 line (Seedance 1.5 Pro is still served by Kie.ai), then Seedance 2.0 on 12 February 2026 and Seedance 2.5 on 31 July 2026.
Did Seedance 1.0 have audio?
Native audio generation is a feature of the later models. Every active model on Seedancee generates audio; we do not describe 1.0 as having done so.
Can I download Seedance 1.0 weights?
Not as far as we can verify. ByteDance has not published weights or code for any Seedance version. Check the official ByteDance Seed pages for updates; we link them below.
Will Seedancee add Seedance 1.0 later?
Only if a provider we trust exposes a verified endpoint for it. Given that newer models cover every 1.0 use case at equal or lower cost, we consider it unlikely.