Seedance 2.0 API 文档

Name: Seedance 2.0 API
Brand: ByteDance
SKU: bytedance/seedance-2.0
Availability: InStock

查看从代码中调用 Seedance 2.0 所需的全部信息。基础 URL 为 https://cheapergen.com/api/v1。你可以先在 Playground 中试用。

正在使用编程智能体？

将这段内容粘贴到 Claude Code、Cursor、Codex 或任意编程智能体中。它会将 API 接入你的项目，把密钥保存在 CHEAPERGEN_API_KEY 中，并在开始任何付费操作前先用免费报价进行测试。

Add Seedance 2.0 (CheaperGen endpoint bytedance/seedance-2.0/text-to-video) to this project by following https://cheapergen.com/agents/integrate.md

智能体读取的内容

身份验证

在控制面板 → API 密钥创建密钥并以 Bearer 令牌的形式发送。请仅在服务器端保存密钥。

export CHEAPERGEN_API_KEY="cg_live_…"

# every request
Authorization: Bearer $CHEAPERGEN_API_KEY

Seedance 2.0 文生视频 API

POST/api/v1/run/bytedance/seedance-2.0/text-to-video

提交异步任务并返回 202 和生成任务 ID。请轮询 GET /api/v1/generations/{id} 或传入 webhook_url。参见任务生命周期。

输入参数

名称	类型	说明	影响价格
`prompt`必填	string	描述镜头，包括主体、动作、镜头运动、光线和风格。	否
`aspect_ratio`	string (enum)	输出画面比例。可选值：16:9 · 9:16 · 1:1 · 4:3 · 3:4 · 21:9 默认值：16:9	是
`resolution`	string (enum)	输出分辨率。分辨率越高，每秒价格越高。可选值：480p · 720p · 1080p · 4k 默认值：720p	是
`duration`	integer	生成视频片段时长（4–15 秒）。按秒计费。范围：4–15s 默认值：5	是
`generate_audio`	boolean	同步生成声音、环境音和对白，无额外费用。默认值：true	否
`seed`	integer	使用相同的 seed 和设置即可复现结果。留空则随机生成。	否
`webhook_url`	string (URL)	可选。生成完成后，我们会在此地址 POST 结果，并使用你的 Webhook 密钥进行签名。Webhooks	否

请求

const API = "https://cheapergen.com/api/v1";
const headers = {
  Authorization: `Bearer ${process.env.CHEAPERGEN_API_KEY}`,
  "Content-Type": "application/json",
};

// 1. Submit the job
let job = await fetch(`${API}/run/bytedance/seedance-2.0/text-to-video`, {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "黄金时刻，陶艺家缓缓将陶土塑成花瓶，光线中尘埃浮动，浅景深，镜头缓慢推进",
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
  }),
}).then((r) => r.json());

// 2. Poll until it finishes (or pass webhook_url and skip polling)
while (job.status === "queued" || job.status === "running") {
  await new Promise((r) => setTimeout(r, 3000));
  job = await fetch(`${API}/generations/${job.id}`, { headers }).then((r) => r.json());
}

console.log(job.status === "succeeded" ? job.output.video.url : job.error);

import os, time, requests

API = "https://cheapergen.com/api/v1"
headers = {"Authorization": f"Bearer {os.environ['CHEAPERGEN_API_KEY']}"}

# 1. Submit the job
job = requests.post(f"{API}/run/bytedance/seedance-2.0/text-to-video", headers=headers, json={
    "prompt": "黄金时刻，陶艺家缓缓将陶土塑成花瓶，光线中尘埃浮动，浅景深，镜头缓慢推进",
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
}).json()

# 2. Poll until it finishes (or pass "webhook_url" and skip polling)
while job["status"] in ("queued", "running"):
    time.sleep(3)
    job = requests.get(f"{API}/generations/{job['id']}", headers=headers).json()

print(job["status"], job["output"]["video"]["url"] if job["status"] == "succeeded" else job["error"])

curl -X POST https://cheapergen.com/api/v1/run/bytedance/seedance-2.0/text-to-video \
  -H "Authorization: Bearer $CHEAPERGEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "prompt": "黄金时刻，陶艺家缓缓将陶土塑成花瓶，光线中尘埃浮动，浅景深，镜头缓慢推进",
  "aspect_ratio": "16:9",
  "resolution": "720p",
  "duration": 5
}'

响应

{
  "id": "gen_8c2QmX1nq0k4",
  "object": "generation",
  "model": "bytedance/seedance-2.0",
  "endpoint": "bytedance/seedance-2.0/text-to-video",
  "mode": "text-to-video",
  "status": "queued",
  "input": {
    "prompt": "黄金时刻，陶艺家缓缓将陶土塑成花瓶，光线中尘埃浮动，浅景深，镜头缓慢推进",
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
  },
  "output": null,
  "error": null,
  "cost": {
    "amount_usd": 0.2255,
    "currency": "usd",
    "estimated": true,
    "official_usd": null,
    "list_price_source": "official",
    "list_price_label": "Official",
    "saved_usd": null
  },
  "source": "api",
  "started_at": null,
  "completed_at": null,
  "urls": {
    "get": "https://cheapergen.com/api/v1/generations/gen_8c2QmX1nq0k4",
    "cancel": "https://cheapergen.com/api/v1/generations/gen_8c2QmX1nq0k4/cancel"
  },
  "created_at": "2026-10-15T09:21:04Z"
}

{
  "id": "gen_8c2QmX1nq0k4",
  "object": "generation",
  "model": "bytedance/seedance-2.0",
  "endpoint": "bytedance/seedance-2.0/text-to-video",
  "mode": "text-to-video",
  "status": "succeeded",
  "input": {
    "prompt": "黄金时刻，陶艺家缓缓将陶土塑成花瓶，光线中尘埃浮动，浅景深，镜头缓慢推进",
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
  },
  "output": {
    "video": {
      "url": "https://cdn.cheapergen.com/outputs/gen_8c2Q.mp4",
      "content_type": "video/mp4",
      "duration": 5,
      "width": 1280,
      "height": 720
    }
  },
  "error": null,
  "cost": {
    "amount_usd": 0.2255,
    "currency": "usd",
    "estimated": false,
    "official_usd": 0.264,
    "list_price_source": "official",
    "list_price_label": "Official",
    "saved_usd": 0.0385
  },
  "source": "api",
  "created_at": "2026-10-15T09:21:04Z",
  "started_at": "2026-10-15T09:21:06Z",
  "completed_at": "2026-10-15T09:22:31Z"
}

Seedance 2.0 图生视频 API

POST/api/v1/run/bytedance/seedance-2.0/image-to-video

提交异步任务并返回 202 和生成任务 ID。请轮询 GET /api/v1/generations/{id} 或传入 webhook_url。参见任务生命周期。

输入参数

名称	类型	说明	影响价格
`prompt`必填	string	描述镜头，包括主体、动作、镜头运动、光线和风格。	否
`image_url`必填	string (URL)	作为开场画面的图像。支持 JPG/PNG/WebP，可使用 URL 或上传。	否
`end_image_url`	string (URL)	可选结束画面，模型会在首尾帧之间生成动画。	否
`aspect_ratio`	string (enum)	输出画面比例。可选值：16:9 · 9:16 · 1:1 · 4:3 · 3:4 · 21:9 默认值：16:9	是
`resolution`	string (enum)	输出分辨率。分辨率越高，每秒价格越高。可选值：480p · 720p · 1080p · 4k 默认值：720p	是
`duration`	integer	生成视频片段时长（4–15 秒）。按秒计费。范围：4–15s 默认值：5	是
`generate_audio`	boolean	同步生成声音、环境音和对白，无额外费用。默认值：true	否
`seed`	integer	使用相同的 seed 和设置即可复现结果。留空则随机生成。	否
`webhook_url`	string (URL)	可选。生成完成后，我们会在此地址 POST 结果，并使用你的 Webhook 密钥进行签名。Webhooks	否

请求

const API = "https://cheapergen.com/api/v1";
const headers = {
  Authorization: `Bearer ${process.env.CHEAPERGEN_API_KEY}`,
  "Content-Type": "application/json",
};

// 1. Submit the job
let job = await fetch(`${API}/run/bytedance/seedance-2.0/image-to-video`, {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "镜头缓缓推近，她转身微笑，头发随风飘动",
    "image_url": "https://cdn.cheapergen.com/samples/portrait.jpg",
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
  }),
}).then((r) => r.json());

// 2. Poll until it finishes (or pass webhook_url and skip polling)
while (job.status === "queued" || job.status === "running") {
  await new Promise((r) => setTimeout(r, 3000));
  job = await fetch(`${API}/generations/${job.id}`, { headers }).then((r) => r.json());
}

console.log(job.status === "succeeded" ? job.output.video.url : job.error);

import os, time, requests

API = "https://cheapergen.com/api/v1"
headers = {"Authorization": f"Bearer {os.environ['CHEAPERGEN_API_KEY']}"}

# 1. Submit the job
job = requests.post(f"{API}/run/bytedance/seedance-2.0/image-to-video", headers=headers, json={
    "prompt": "镜头缓缓推近，她转身微笑，头发随风飘动",
    "image_url": "https://cdn.cheapergen.com/samples/portrait.jpg",
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
}).json()

# 2. Poll until it finishes (or pass "webhook_url" and skip polling)
while job["status"] in ("queued", "running"):
    time.sleep(3)
    job = requests.get(f"{API}/generations/{job['id']}", headers=headers).json()

print(job["status"], job["output"]["video"]["url"] if job["status"] == "succeeded" else job["error"])

curl -X POST https://cheapergen.com/api/v1/run/bytedance/seedance-2.0/image-to-video \
  -H "Authorization: Bearer $CHEAPERGEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "prompt": "镜头缓缓推近，她转身微笑，头发随风飘动",
  "image_url": "https://cdn.cheapergen.com/samples/portrait.jpg",
  "aspect_ratio": "16:9",
  "resolution": "720p",
  "duration": 5
}'

响应

{
  "id": "gen_8c2QmX1nq0k4",
  "object": "generation",
  "model": "bytedance/seedance-2.0",
  "endpoint": "bytedance/seedance-2.0/image-to-video",
  "mode": "image-to-video",
  "status": "queued",
  "input": {
    "prompt": "镜头缓缓推近，她转身微笑，头发随风飘动",
    "image_url": "https://cdn.cheapergen.com/samples/portrait.jpg",
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
  },
  "output": null,
  "error": null,
  "cost": {
    "amount_usd": 0.2255,
    "currency": "usd",
    "estimated": true,
    "official_usd": null,
    "list_price_source": "official",
    "list_price_label": "Official",
    "saved_usd": null
  },
  "source": "api",
  "started_at": null,
  "completed_at": null,
  "urls": {
    "get": "https://cheapergen.com/api/v1/generations/gen_8c2QmX1nq0k4",
    "cancel": "https://cheapergen.com/api/v1/generations/gen_8c2QmX1nq0k4/cancel"
  },
  "created_at": "2026-10-15T09:21:04Z"
}

{
  "id": "gen_8c2QmX1nq0k4",
  "object": "generation",
  "model": "bytedance/seedance-2.0",
  "endpoint": "bytedance/seedance-2.0/image-to-video",
  "mode": "image-to-video",
  "status": "succeeded",
  "input": {
    "prompt": "镜头缓缓推近，她转身微笑，头发随风飘动",
    "image_url": "https://cdn.cheapergen.com/samples/portrait.jpg",
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
  },
  "output": {
    "video": {
      "url": "https://cdn.cheapergen.com/outputs/gen_8c2Q.mp4",
      "content_type": "video/mp4",
      "duration": 5,
      "width": 1280,
      "height": 720
    }
  },
  "error": null,
  "cost": {
    "amount_usd": 0.2255,
    "currency": "usd",
    "estimated": false,
    "official_usd": 0.264,
    "list_price_source": "official",
    "list_price_label": "Official",
    "saved_usd": 0.0385
  },
  "source": "api",
  "created_at": "2026-10-15T09:21:04Z",
  "started_at": "2026-10-15T09:21:06Z",
  "completed_at": "2026-10-15T09:22:31Z"
}

Seedance 2.0 参考素材生成视频 API

POST/api/v1/run/bytedance/seedance-2.0/reference-to-video

提交异步任务并返回 202 和生成任务 ID。请轮询 GET /api/v1/generations/{id} 或传入 webhook_url。参见任务生命周期。

输入参数

名称	类型	说明	影响价格
`prompt`必填	string	描述镜头，包括主体、动作、镜头运动、光线和风格。	否
`reference_image_urls`	string[] (URLs)	最多使用 9 张图像指定角色、产品、风格或场景。在提示词中使用 @Image1、@Image2…来引用。最多数量：9	否
`reference_video_urls`	string[] (video URLs)	最多 3 段MP4/MOV，用于指定动作、镜头运动或特效（每段 2–15 秒, 总计 15 秒, 总计 ≤ 50 MB）。使用 @Video1、@Video2…来引用。参考视频的秒数与输出视频时长合并计算，并按较低的视频输入 Token 费率收费。最多数量：3	是
`reference_audio_urls`	string[] (audio URLs)	最多 3 段MP3/WAV，用于指定人声、音乐或音效（每段 2–15 秒, 总计 15 秒, 每个 ≤ 15 MB）。使用 @Audio1、@Audio2…来引用。至少需要一张参考图像或一段参考视频。最多数量：3	否
`aspect_ratio`	string (enum)	输出画面比例。可选值：16:9 · 9:16 · 1:1 · 4:3 · 3:4 · 21:9 默认值：16:9	是
`resolution`	string (enum)	输出分辨率。分辨率越高，每秒价格越高。可选值：480p · 720p · 1080p · 4k 默认值：720p	是
`duration`	integer	生成视频片段时长（4–15 秒）。按秒计费。范围：4–15s 默认值：5	是
`generate_audio`	boolean	同步生成声音、环境音和对白，无额外费用。默认值：true	否
`seed`	integer	使用相同的 seed 和设置即可复现结果。留空则随机生成。	否
`webhook_url`	string (URL)	可选。生成完成后，我们会在此地址 POST 结果，并使用你的 Webhook 密钥进行签名。Webhooks	否

请求

const API = "https://cheapergen.com/api/v1";
const headers = {
  Authorization: `Bearer ${process.env.CHEAPERGEN_API_KEY}`,
  "Content-Type": "application/json",
};

// 1. Submit the job
let job = await fetch(`${API}/run/bytedance/seedance-2.0/reference-to-video`, {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "@Image1 在大理石桌上拆开 @Image2 中的产品，镜头运动参考 @Video1",
    "reference_image_urls": [
      "https://cdn.cheapergen.com/samples/reference-1.jpg",
      "https://cdn.cheapergen.com/samples/reference-2.jpg"
    ],
    "reference_video_urls": [
      "https://cdn.cheapergen.com/samples/reference-1.mp4"
    ],
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
  }),
}).then((r) => r.json());

// 2. Poll until it finishes (or pass webhook_url and skip polling)
while (job.status === "queued" || job.status === "running") {
  await new Promise((r) => setTimeout(r, 3000));
  job = await fetch(`${API}/generations/${job.id}`, { headers }).then((r) => r.json());
}

console.log(job.status === "succeeded" ? job.output.video.url : job.error);

import os, time, requests

API = "https://cheapergen.com/api/v1"
headers = {"Authorization": f"Bearer {os.environ['CHEAPERGEN_API_KEY']}"}

# 1. Submit the job
job = requests.post(f"{API}/run/bytedance/seedance-2.0/reference-to-video", headers=headers, json={
    "prompt": "@Image1 在大理石桌上拆开 @Image2 中的产品，镜头运动参考 @Video1",
    "reference_image_urls": [
        "https://cdn.cheapergen.com/samples/reference-1.jpg",
        "https://cdn.cheapergen.com/samples/reference-2.jpg"
    ],
    "reference_video_urls": [
        "https://cdn.cheapergen.com/samples/reference-1.mp4"
    ],
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
}).json()

# 2. Poll until it finishes (or pass "webhook_url" and skip polling)
while job["status"] in ("queued", "running"):
    time.sleep(3)
    job = requests.get(f"{API}/generations/{job['id']}", headers=headers).json()

print(job["status"], job["output"]["video"]["url"] if job["status"] == "succeeded" else job["error"])

curl -X POST https://cheapergen.com/api/v1/run/bytedance/seedance-2.0/reference-to-video \
  -H "Authorization: Bearer $CHEAPERGEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "prompt": "@Image1 在大理石桌上拆开 @Image2 中的产品，镜头运动参考 @Video1",
  "reference_image_urls": [
    "https://cdn.cheapergen.com/samples/reference-1.jpg",
    "https://cdn.cheapergen.com/samples/reference-2.jpg"
  ],
  "reference_video_urls": [
    "https://cdn.cheapergen.com/samples/reference-1.mp4"
  ],
  "aspect_ratio": "16:9",
  "resolution": "720p",
  "duration": 5
}'

响应

{
  "id": "gen_8c2QmX1nq0k4",
  "object": "generation",
  "model": "bytedance/seedance-2.0",
  "endpoint": "bytedance/seedance-2.0/reference-to-video",
  "mode": "reference-to-video",
  "status": "queued",
  "input": {
    "prompt": "@Image1 在大理石桌上拆开 @Image2 中的产品，镜头运动参考 @Video1",
    "reference_image_urls": [
      "https://cdn.cheapergen.com/samples/reference-1.jpg",
      "https://cdn.cheapergen.com/samples/reference-2.jpg"
    ],
    "reference_video_urls": [
      "https://cdn.cheapergen.com/samples/reference-1.mp4"
    ],
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
  },
  "output": null,
  "error": null,
  "cost": {
    "amount_usd": 0.2255,
    "currency": "usd",
    "estimated": true,
    "official_usd": null,
    "list_price_source": "official",
    "list_price_label": "Official",
    "saved_usd": null
  },
  "source": "api",
  "started_at": null,
  "completed_at": null,
  "urls": {
    "get": "https://cheapergen.com/api/v1/generations/gen_8c2QmX1nq0k4",
    "cancel": "https://cheapergen.com/api/v1/generations/gen_8c2QmX1nq0k4/cancel"
  },
  "created_at": "2026-10-15T09:21:04Z"
}

{
  "id": "gen_8c2QmX1nq0k4",
  "object": "generation",
  "model": "bytedance/seedance-2.0",
  "endpoint": "bytedance/seedance-2.0/reference-to-video",
  "mode": "reference-to-video",
  "status": "succeeded",
  "input": {
    "prompt": "@Image1 在大理石桌上拆开 @Image2 中的产品，镜头运动参考 @Video1",
    "reference_image_urls": [
      "https://cdn.cheapergen.com/samples/reference-1.jpg",
      "https://cdn.cheapergen.com/samples/reference-2.jpg"
    ],
    "reference_video_urls": [
      "https://cdn.cheapergen.com/samples/reference-1.mp4"
    ],
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
  },
  "output": {
    "video": {
      "url": "https://cdn.cheapergen.com/outputs/gen_8c2Q.mp4",
      "content_type": "video/mp4",
      "duration": 5,
      "width": 1280,
      "height": 720
    }
  },
  "error": null,
  "cost": {
    "amount_usd": 0.2255,
    "currency": "usd",
    "estimated": false,
    "official_usd": 0.264,
    "list_price_source": "official",
    "list_price_label": "Official",
    "saved_usd": 0.0385
  },
  "source": "api",
  "created_at": "2026-10-15T09:21:04Z",
  "started_at": "2026-10-15T09:21:06Z",
  "completed_at": "2026-10-15T09:22:31Z"
}

获取结果

生成任务以异步方式处理。请持续轮询，直到 status 状态为 succeeded、failed 或 canceled；也可以在提交时传入 webhook_url。生成失败会自动退款。

curl https://cheapergen.com/api/v1/generations/gen_8c2QmX1nq0k4 \
  -H "Authorization: Bearer $CHEAPERGEN_API_KEY"

更多内容：任务生命周期 · webhooks · 错误处理

Seedance 2.0 定价

按视频按秒计费按量付费，无需订阅（月度套餐为可选项）。生成失败会自动退款。

档位	官方价格	CheaperGen	可节省
480p 16:9 · 24 fps	~~$0.0703~~/s	$0.0631/s	−10%
720p 16:9 · 24 fps	~~$0.1512~~/s	$0.1356/s	−10%
1080p 16:9 · 24 fps	~~$0.3742~~/s	$0.3361/s	−10%
4K 16:9 · 24 fps	~~$0.7776~~/s	$0.6959/s	−11%

官方价格：BytePlus ModelArk 国际站 dreamina-seedance-2-0 目录价（480p–720p 每 1M 视频 Token $7，1080p 为 $7.7，4K 为 $4；含视频输入分别为 $4.3 / $4.7 / $2.4）。价格核实于 2026年10月18日。
按视频 Token 计费；每秒价格按 16:9、无视频输入计算。
包含参考视频时，（参考视频秒数 + 输出视频秒数）统一按较低的视频输入 Token 费率计费。
宽高比造成的价格变化小于 3%。