Seedance 2.5 Flex API
Seedance 2.5 Flex by ByteDance for text to video, reference to video, 4–30s clips up to 1080p with audio. Call it through TeamoRouter's OpenAI-compatible /v1/videos endpoint with one API key.
Seedance 2.5 Flex model IDs and parameters
| Mode | Model ID | Duration | Resolution | Aspect ratio | Audio |
|---|---|---|---|---|---|
| Text to video | seedance-2-5-text-to-video-flex | 4–30s | 480p, 720p, 1080p | 16:9, 4:3, 1:1, 3:4, 21:9, 9:16 | Yes |
| Reference to video | seedance-2-5-reference-to-video-flex | 4–30s | 480p, 720p, 1080p | 16:9, 4:3, 1:1, 3:4, 21:9, 9:16 | Yes |
Call the Seedance 2.5 Flex API
Video generation is asynchronous: create a job, poll it, then download the MP4. Replace $TEAMO_API_KEY with your API key.
# 1. Create a video job
curl https://api.teamorouter.com/v1/videos \
-H "Authorization: Bearer $TEAMO_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"seedance-2-5-text-to-video-flex","prompt":"A small dog running on grass","seconds":"4"}'
# 2. Poll until status is completed
curl https://api.teamorouter.com/v1/videos/<video_id> -H "Authorization: Bearer $TEAMO_API_KEY"
# 3. Download the MP4
curl -L https://api.teamorouter.com/v1/videos/<video_id>/content -H "Authorization: Bearer $TEAMO_API_KEY" -o video.mp4Pricing: billed per second of generated video; live prices are in the Video Studio.
Seedance 2.5 Flex API FAQ
- What are the Seedance 2.5 Flex API model IDs?
- Seedance 2.5 Flex model IDs on TeamoRouter — Text to video: seedance-2-5-text-to-video-flex; Reference to video: seedance-2-5-reference-to-video-flex.
- What is the difference between Seedance 2.5 Flex text-to-video and image-to-video?
- Text to video creates a clip from a prompt only. Image to video animates the image you pass in input_reference as the first frame, and reference to video uses your images as references for characters, objects or style.
- How long and what resolution can Seedance 2.5 Flex videos be?
- Seedance 2.5 Flex generates 4–30s clips up to 1080p in 16:9, 4:3, 1:1, 3:4, 21:9, 9:16, with optional audio. Pass seconds as an integer string; if size is omitted, the model's first supported resolution and aspect ratio are used.
- How do I call the Seedance 2.5 Flex API?
- Send POST /v1/videos with the model ID and prompt, poll GET /v1/videos/{video_id} until status is completed, then download from /v1/videos/{video_id}/content. The endpoint follows OpenAI Videos, so the OpenAI SDK's client.videos.create works with base_url https://api.teamorouter.com/v1. Video generation API docs.
- How much does the Seedance 2.5 Flex API cost and how do I pay?
- Seedance 2.5 Flex is billed per second of generated video. New accounts start with a $0 balance — top up from $5 by card, then usage is deducted per job with no subscription. Live prices are shown in the Video Studio. Top up.