Seedance 2.0 Fast

Seedance 2.0 Fast is a specialized text-to-video version of the model, designed for speed and audio integration.

Censorship unknownAudio out

PRICE0.09 creditsper second

AVG TIME—estimate

OUTPUTvideoasync · poll

Open in playground

Inputs

promptrequired · text

imageoptional · Start Frame Image — artifact id or https URL

params.resolution480p | 720p · default 480p

params.duration1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 · default 6

params.audioboolean · default true

Monthly estimate

seconds per month

1,000 × 0.09 credits90.00 credits

Per second at the default quality; other qualities are priced on the playground.

curl https://platform.4i.app/api/v1/run \
  -H "Authorization: Bearer $FOURI_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "service": "bytedance/seedance-2-0-fast",
    "input": {
      "prompt": "Describe the shot…"
    },
    "params": {
      "resolution": "480p",
      "duration": "6"
    }
  }'

# Video runs return "status": "running".
# Poll until it is "succeeded":
curl https://platform.4i.app/api/v1/runs/run_… \
  -H "Authorization: Bearer $FOURI_KEY"

Every output has an artifact_id. Pass it as input to any compatible service.

Get your API key →