Seedance 2.5 draft mode: preview at 480p, render the keeper at 1080p

Feature update · 2026-10-15

Seedance 2.5 video generation now supports draft mode.

Submit a task with "draft": true at 480p to get a quick, low-cost preview of framing, camera movement and how the prompt was understood. When a draft looks right, submit a final that references it with a draft_task item and resolution: 1080p. The final inherits the prompt, reference media, duration, aspect ratio and seed from the draft, so it closely matches what you approved.

What this changes in practice:

• You only pay the 1080p price for shots you keep. Drafts are billed at 480p.
• Iteration is faster. Try several prompts as drafts, then finalize the best one.
• Same API. Works on the Volcengine Ark-compatible task endpoint and on POST /v1/video/generate.

Drafts are valid for 7 days and must be finalized with the same API key. See Draft mode in the video docs for request examples and billing details.