Billing note Drafts can be finalized for 7 days after they are created, only by your own team (and, for reseller teams, the same end customer). The draft itself is billed separately as a 480p video.

ByteDanceMediumUltra

Seedance 2.5 Draft to Final

Turn a Seedance 2.5 draft into the final 1080p video. Make a cheap 480p draft with bytedance/seedance-2.5 and draft: true, check it, then send that job's job_id here. The final reuses the draft's prompt, reference media, duration, aspect ratio, seed and audio setting, so what you approved is what you get.

31710 credits

per 5s draft — billed as 1080p for the draft's duration (1335 credits/s); drafts with reference videos: 799 credits per (input+output) second

Final video at 1080p (10-bit color, H.265/HEVC)

Reuses the draft's prompt, reference media, duration, aspect ratio, seed and audio — no drift between preview and final

Only output format and watermark can be set again

Served directly from BytePlus ModelArk; never falls back to another provider

Run it right now

Test this model instantly in the Console Playground — no code required

Use with AI Assistant

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llms.txtllms.txt ↗

Quick Start

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "bytedance/seedance-2.5/draft-to-final",
  "input": {
    "draft_job_id": "YourDraftJobId0123456789abcdefAB",
    "output_format": "mp4"
  }
}'

Parameters

Parameter	Type	Required	Default	Description
`draft_job_id`	string	Yes	-	job_id of a completed Seedance 2.5 draft (POST /predictions with model bytedance/seedance-2.5 and draft: true), created by your team within the last 7 days. Not the upstream task id.
`output_format`	string	No	mp4	Output video container format. Not reused from the draft — omitted means mp4. mp4mov
`watermark`	boolean	No	false	Add a watermark. Not reused from the draft — omitted means no watermark.

Common Parameters

Common parameters used when calling POST /v1/predictions.

Parameter	Type	Required	Default	Description
`model`	string	Yes	-	Model identifier
`input`	object	Yes	-	Object containing the model-specific parameters from the table above
`output_folder`	string	No	-	Folder path for output files (max 256 chars, '..' not allowed)
`webhook_url`	string	No	-	Webhook URL to call on completion
`is_public`	boolean	No	false	If true, output files are also available via permanent public URLs

Examples

Finalize an approved draft

Step 2 of draft mode. Step 1 was POST /predictions with model bytedance/seedance-2.5, your prompt and inputs, and draft: true; its job_id goes here.

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "bytedance/seedance-2.5/draft-to-final",
  "input": {
    "draft_job_id": "YourDraftJobId0123456789abcdefAB",
    "output_format": "mp4"
  }
}'

Tips & Best Practices

1Do not send prompt, images, videos, audio, duration, aspect_ratio, seed or generate_audio — they come from the draft. To change any of them, make a new draft.

2The final is billed on the draft's settings: a 10-second draft finalizes as a 10-second 1080p video.

31080p output uses H.265/HEVC. If a player cannot open it, try VLC, mpv or QuickTime Player.

4A draft that ran on a fallback provider cannot be finalized — drafts never fall back, so this only affects requests made before draft mode existed.