# RelayDance

> Generate video with Seedance 2.0 and HappyHorse plus gpt-image-2 image generation through one OpenAI-compatible API. Up to 15 second clips, multi-reference fusion, face and portrait friendly, no queue, no KYC. Pay with USDT or card via Stripe.

## 核心页面导航与简介

- [RelayDance: Seedance Video Generation API](https://relaydance.cyou/): Generate video with Seedance 2.0 and HappyHorse plus gpt-image-2 image generation through one OpenAI-compatible API. Up 
- [RelayDance: Seedance Video Generation API](https://relaydance.cyou/zh): 通过一个兼容 OpenAI 的 API，使用 Seedance 2.5、2.0、MiniMax H3 与 HappyHorse 生成视频，并支持 gpt-image-2 图像生成。最长 30 秒片段，最多 50 个参考素材，支持人脸与人像，
- [Documentation | RelayDance](https://relaydance.cyou/docs): RelayDance developer documentation: Seedance 2.0 and HappyHorse video generation plus gpt-image-2 image generation throu
- [About | RelayDance](https://relaydance.cyou/about): About RelayDance: an AI video generation platform serving the Seedance model family and image generation through one Ope
- [RelayDance Skill: Generate Seedance 2.5 and 2.0 Videos from Claude Code | RelayD](https://relaydance.cyou/skill): Install the RelayDance agent skill and generate Seedance 2.5 and 2.0 AI videos from Claude Code, Cursor, or Codex with o
- [RelayDance guides](https://relaydance.cyou/guides): RelayDance guides RelayDance guides How to call the Seedance 2.0 video generation API 如何调用 Seedance 2.0 视频生成 API Image t
- [AI Models | RelayDance](https://relaydance.cyou/models): Browse the public models on RelayDance: Seedance 2.0 (480p to native 4K, plus Fast and Mini) and Seedance 1.5 Pro video,
- [Contact | RelayDance](https://relaydance.cyou/contact): How to reach RelayDance: support, privacy, security and legal contacts.
- [Plans & Pricing | RelayDance](https://relaydance.cyou/pricing): RelayDance pricing: pay-as-you-go with no platform fee, or contact us for volume discounts and dedicated limits. Pay-as-
- [AI 模型 | RelayDance](https://relaydance.cyou/zh/models): 浏览 RelayDance 上的公开模型：Seedance 2.0（480p 到原生 4K，另有 Fast 与 Mini）和 Seedance 1.5 Pro 视频、HappyHorse 视频、gpt-image-2 图像生成以及 Seed
- [User Agreement | RelayDance](https://relaydance.cyou/user-agreement): Terms of use for the RelayDance AI video generation API and console: accounts, acceptable use, billing, content rights.
- [Quick Start | RelayDance](https://relaydance.cyou/docs/quick-start): Get your RelayDance API key and generate your first AI video with two HTTP calls.
- [Text to video API quickstart with an OpenAI compatible endpoint | RelayDance](https://relaydance.cyou/guides/text-to-video-api-quickstart-with-an-openai-compatible-endpoint.html): Text to video API quickstart with an OpenAI compatible endpoint

## 关键业务事实与常见问题

- 官方网址：https://relaydance.cyou/
- 网站类型：大模型 API 中转 / 聚合服务（OpenAI、Claude、Gemini 等兼容接口）
- 服务简介：Generate video with Seedance 2.0 and HappyHorse plus gpt-image-2 image generation through one OpenAI-compatible API. Up to 15 second clips, multi-reference fusion, face and portrait friendly, no queue, no KYC. Pay with USDT or card via Stripe.
- 收录页面数：13（完整列表见 https://relaydance.cyou/sitemap.xml）

### How does video generation work?

Asynchronously. POST /v1/video/generations returns a task id immediately. Poll GET /v1/video/generations/{task_id}, or set metadata.callback_url when submitting and we POST the final result to your webhook so you never poll.

### How long can clips be?

Up to 30 seconds per request on Seedance 2.5, up to 15 seconds on Seedance 2.0, at 480p to native 4K. Audio generation is supported on Seedance 2.0, 2.5 and MiniMax H3 models.

### Can I use reference images?

Yes. Up to 9 reference images, 3 reference videos and 3 reference audio tracks per request via metadata.content[], referenced in the prompt as @image1 to @imageN.

### What payment methods are accepted?

USDT and credit or debit cards via Stripe checkout.

### Am I charged for failed generations?

No. Failed or errored tasks are never billed.

### Do I need a BytePlus account or KYC?

No. RelayDance gives direct API access with no BytePlus enterprise account and no KYC. Face and portrait generation is supported, and there is no queue, so tasks start immediately.

### What models and SKUs are available?

Seedance 2.0 (480p, 720p, 1080p and native 4K), Seedance 2.0 Fast and Mini, Seedance 1.5 Pro, HappyHorse video models, gpt-image-2 image generation, and Seedance super-resolution. Plus special SKUs not offered on the official platform. The live list with per-model rates is on the models page.

### How do I get 4K output, and what does upscale-to-4K cost?

Two ways: generate directly with a native-4K Seedance 2.0 SKU, or generate at any resolution and upscale the result afterward with Seedance super-resolution. Upscaling is billed separately and per second on top of the original generation cost; failed upscales are never billed. Exact rates are on the models page. Start …


_最后更新：2026-10-15_