Fast and Mini are separate Seedance 2.0 variants, not modes of Seedance 2.5. As reviewed on 28 October 2026, both document 4–15 seconds at 480p or 720p and the 2.0-family input limits. The inspected ChatCut integration exposes both selectors. Configured Ark checks timed out, so this reference does not claim a newly completed boundary test or production-wide availability.
Exact identities and output limits
The Ark IDs are shown below. BytePlus uses the corresponding dreamina-seedance-2-0-fast-260128 and dreamina-seedance-2-0-mini-260615 IDs. A model ID at one provider does not prove another provider’s entitlement.
| Model and public ID | Capabilities, integration and evidence |
|---|---|
Seedance 2.0 Fastdoubao-seedance-2-0-fast-260128Availability: Pinned integration and saved dev checks; production unverified. Source links describe native specifications. Reviewed: | Native documentation: 4–15s; 480p/720p; same 2.0 input modes and reference limits. ChatCut integration: Fast selector and 480p/720p exposed in inspected build. Endpoint evidence: Current configured-route boundary generation unverified after timeouts. |
Seedance 2.0 Minidoubao-seedance-2-0-mini-260615Availability: Pinned integration and saved dev checks; production unverified. Source links describe native specifications. Reviewed: | Native documentation: 4–15s; 480p/720p; same 2.0 input modes and reference limits. ChatCut integration: Mini selector and 480p/720p exposed in inspected build. Endpoint evidence: Current configured-route boundary generation unverified after timeouts. |
Which inputs can I combine?
Use one of these modes: text only; one first frame; a first frame plus last frame; or multimodal references. A last frame requires a first frame, and frame inputs cannot mix with reference mode. The documented reference budget is up to 9 images, 3 videos and 3 audio files. Audio references require at least one image or video reference; audio-only input is not a 2.0-family mode.
Reference videos and audios are each 2–15 seconds, with a 15-second aggregate budget per type. Counts alone do not make a request valid. Native documentation also lists image less than 30 MB, video ≤200 MB, audio ≤15 MB and an aggregate request limit; ChatCut attachment handling may add stricter limits. Check generation references before submitting. These are documented/exposed rules, not successful boundary jobs from the timed-out Ark probe. Official task API.
Is Mini a draft mode? Is Fast always faster?
Mini performs ordinary generation with its own model ID. It is distinct from the Seedance 2.5 Draft-to-final API, which is not exposed by the inspected ChatCut tool. Neither Fast nor Mini offers a 1080p or 4K generation tier in the checked specification. Mini is not 720p-only. The native audio-off control is not exposed by the inspected ChatCut video tool; these variants expose no edit, extend or Draft mode.
No matched speed or quality test is supplied for these variants. The word Fast does not establish a completion-time promise. Full 2.0 and 2.5 have different resolution and duration ceilings; compare them in the model matrix.
Make and edit a short reference-led clip
Choose a short test
In Video Gen, choose the Fast or Mini option actually shown in your build. Start with a five-second 16:9 clip at 480p and a simple action.
Choose one input mode
Use text alone, or attach one first-frame image. Describe the subject, action and camera direction; do not mix frame inputs with multimodal references.
Review the estimate and output
Check the quoted model and settings before submitting. After completion, inspect motion, reference fidelity and audio, then place or keep the clip on the timeline for trimming, captions and assembly.
Example prompt: “A red paper boat moves slowly across a puddle, low static camera, one continuous shot.” A single-shot instruction is a request, not a continuity guarantee. For multiple shots, describe their order and inspect the cuts; 2.0 timestamps are not guaranteed. A completed video clip is editable as timeline media, not as separately editable generated objects.
How should I compare credits?
Use the current preflight estimate and Credits Policy. Compare the same model provider, account cohort, resolution, aspect ratio, output duration and reference-video duration on the same quote date. Input video and provider token settlement can affect the charge; Agent usage is separate. The saved Fast/Mini launch promotion ended on 7 September 2026, so this page gives no active percentage discount or current-price example.
If the option is missing, a request times out or validation fails, check workflow failures and the video generation guide. A timeout does not prove the model is unsupported.
Frequently asked questions
Is Seedance Mini limited to 720p?
Can I use only an audio reference?
Can I add a last frame without a first frame?
Is Mini the same as Seedance 2.5 Draft?
Which variant is cheaper or faster today?
Last verified: 28 October 2026. Official specifications were accessed on 27 October; the inspected integration and saved checks were reviewed on 28 October. Sources: BytePlus task API, Ark Seedance guide. Route acceptance remains unverified after connection timeouts; no new paid generation was performed for this reference.