# SeedanceAPI
> REST API for SeedDance video and Seedream image generation.

## About
SeedanceAPI is a pay-as-you-go API for SeedDance (video) and Seedream (image) models.
Authenticate with an API key, upload media when needed, and generate video or images.
Billing is prepaid USD: video per second, images per generation.

## Overview
- Website: https://seedanceapi.us
- API: https://api.seedanceapi.us
- OpenAPI: https://api.seedanceapi.us/openapi.json
- MCP: https://api.seedanceapi.us/mcp
- Docs: https://seedanceapi.us/docs
- Pricing: https://seedanceapi.us/pricing
- Models: https://seedanceapi.us/models
- For Agents: https://seedanceapi.us/agents
- Sitemap: https://seedanceapi.us/sitemap.xml


## Authentication
`Authorization: Bearer ak_...` (API key from the dashboard)

## Key endpoints
- GET /v1/models — list all models
- POST /v1/media/upload — upload inputs for image_url / video_url
- POST /v1/videos — async video generation (billed per second)
- POST /v1/images — sync image generation (billed per generation)
- GET /v1/generations/:id — poll generation status
- GET /v1/credits — check balance (USD)

## Model families
- seedance-2.5
- seedance-2.0
- seedance-2.0-fast
- seedance-2.0-mini
- seedance-1.5-pro
- seedance-1.0-pro
- seedream-5.0
- seedream-5.0-lite
- seedream-4.5
- seedream-4.0

## Popular models
- seedance-2.5/text-to-video ($0.22/sec) — Next-gen cinematic text-to-video.
- seedance-2.5/image-to-video ($0.22/sec) — Next-gen image-to-video.
- seedance-2.5/reference-to-video ($0.22/sec) — Multimodal reference-to-video.
- seedance-2.0/text-to-video ($0.22/sec) — Hollywood-grade cinematic text-to-video with native audio sync.
- seedance-2.0/image-to-video ($0.22/sec) — Animate reference images with cinematic motion and audio.
- seedance-2.0/reference-to-video ($0.22/sec) — Multimodal reference-guided video generation.
- seedance-2.0/video-extend ($0.22/sec) — Extend an existing video from its last frame.
- seedance-2.0/video-edit ($0.20/sec) — Edit lighting, style, and atmosphere of existing video.
- seedance-2.0/text-to-video-turbo ($0.18/sec) — High-resolution turbo text-to-video at near-480p speed.
- seedance-2.0/image-to-video-turbo ($0.18/sec) — High-resolution turbo image-to-video.

## MCP tools
- list_models
- generate_video
- generate_image
- get_generation

## Full docs
- Quickstart: https://seedanceapi.us/docs/quickstart
- Authentication: https://seedanceapi.us/docs/authentication
- Full model list: https://seedanceapi.us/llms-full.txt