| Spec | Value |
|---|---|
| Maker | ByteDance (Seed / Volcano Engine) |
| Released | Mid-December 2025 (arXiv report submitted 15 December 2025) |
| Architecture | Dual-branch Diffusion Transformer with cross-modal joint module (ByteDance report) |
| Native audio | Yes, native joint audio-video generation with multilingual and dialect lip-sync (ByteDance report) |
| Resolution options | 480p, 720p, 1080p (fal API schema; default 720p) |
| Frame rate | 24 fps at up to 1080p (fal model page) |
| Clip length | 4-12 seconds (fal API) |
| Aspect ratios | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16, auto (fal API) |
| Audio toggle | generate_audio on or off (fal API) |
| API price (fal) | About USD 0.26 per 5 s 720p video with audio; USD 2.40 per million video tokens with audio at other resolutions |
Release, architecture and audio rows from the ByteDance report; resolution, frame rate, length and price from fal.ai's page and API schema. No generation-speed figure is published by ByteDance; fal's page states roughly 30-45 s for a 5 s clip, varying by hardware, which is left out as a host estimate. · sumber
| Spec | Value |
|---|---|
| fal.ai, 720p, 5 s, with audio | About USD 0.26 per video |
| fal.ai, other resolutions | USD 2.40 per 1 million video tokens with audio |
As published by fal.ai; read 24 October 2026. · sumber
Estimate from the version's published specs and reviews, 0-5; scores are only comparable within one criteria year. Scored as launched (1.5 Pro): up to 1080p on BytePlus and Vercel (fal and Freepik cap at 720p), 4-12 s clips, native joint audio-video with multilingual lip-sync, text and image input with an optional end frame. No speed figure is published. Realism is praised for lip-sync and prompt adherence but complex action breaks down. All three reviews are AI-tools sites; no tier-1 outlet reviewed it.[1]
Seedance followed prompts accurately even in complex scenarios—like two characters trading insults—even when the acting itself wasn’t perfect.
Excellent lip-sync overall with natural facial movements. The only minor flaw is that the pronunciation of "Vidguru" is slightly inaccurate.
Hands and fine details can still break, especially in close-ups and detail shots.
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Estimated: the technical report was first submitted 15 December 2025 (arXiv v1) and Vercel lists the model on 16 December; other sources give 18 or 23 December, so the exact public launch day is not confirmed.
Explainer on the model's capabilities.[1]
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