Seedance 2.5

NEW

VideoUltra

ByteDance's newest video model. Generates up to 30 seconds in a single shot with synchronized audio — dialogue, music, and effects in the same pass — from a prompt, a start frame, or up to 50 image, video, and audio references.

Capabilities

Text to VideoImage to VideoReference to Video

Specifications

Aspect Ratios

auto21:916:94:31:13:49:16

Supported Durations

4s5s6s7s8s9s10s11s12s13s14s15s16s17s18s19s20s21s22s23s24s25s26s27s28s29s30s

Estimated Generation Time

~3-6 min

API Usage

cURL

curl https://www.flixly.ai/api/v1/generate \
  -H "Authorization: Bearer flx_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2-5",
    "prompt": "A beautiful sunset over the ocean",
    "type": "TEXT_TO_VIDEO"
  }'

Get your API key from the Developer Portal.