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Seedance 2.5 Image to Video API

Name: Seedance 2.5 API
Brand: ByteDance
Availability: OutOfStock

Image to Video with Seedance 2.5 by ByteDance. ByteDance's newest video model — longer, sharper, more controllable.

bytedance/seedance-2.5/image-to-video

FromUp to −14%

$0.092/s$0.107

per second of video · 480p

Open in Studio API

Try Seedance 2.5 Image to Video

Prompt*

0/5000

First frame*

Image used as the opening frame. JPG/PNG/WebP, URL or upload.

Last frame

Optional closing frame — the model animates between the two.

Aspect ratio

Output frame shape.

Resolution

Output resolution. Higher resolutions cost more per second.

Duration

Length of the generated clip in seconds (4–15s). You pay per second.

Generate audio

Generate synchronized sound, ambience and dialogue. No extra cost.

Estimated cost…

Create a free account with Google or email — pay only for what you generate.

Your video will appear here

Write a prompt, pick your settings and hit Run. You only pay for successful generations.

Also available: Seedance 2.5 Text to Video · Seedance 2.5 Reference to Video

Seedance 2.5 Image to Video API

POST/api/v1/run/bytedance/seedance-2.5/image-to-video

Submits an asynchronous job and returns 202 with a generation id. Poll GET /api/v1/generations/{id} or pass webhook_url. See job lifecycle.

Input parameters

Name	Type	Description	Affects price
`prompt`required	string	Describe the shot: subject, action, camera movement, lighting and style.	No
`image_url`required	string (URL)	Image used as the opening frame. JPG/PNG/WebP, URL or upload.	No
`end_image_url`	string (URL)	Optional closing frame — the model animates between the two.	No
`aspect_ratio`	string (enum)	Output frame shape. Values: 16:9 · 9:16 · 1:1 · 4:3 · 3:4 · 21:9 Default: 16:9	Yes
`resolution`	string (enum)	Output resolution. Higher resolutions cost more per second. Values: 480p · 720p · 1080p Default: 720p	Yes
`duration`	integer	Length of the generated clip in seconds (4–15s). You pay per second. Range: 4–15s Default: 5	Yes
`generate_audio`	boolean	Generate synchronized sound, ambience and dialogue. No extra cost. Default: true	No
`seed`	integer	Use the same seed and settings to reproduce a result. Leave empty for random.	No
`webhook_url`	string (URL)	Optional. We POST the finished generation here, signed with your webhook secret. Webhooks	No

Request

curl -X POST https://cheapergen.com/api/v1/run/bytedance/seedance-2.5/image-to-video \
  -H "Authorization: Bearer $CHEAPERGEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "prompt": "The camera pushes in as she turns and smiles; hair moves in the wind",
  "image_url": "https://cdn.cheapergen.ai/samples/portrait.jpg",
  "aspect_ratio": "16:9",
  "resolution": "720p",
  "duration": 5
}'

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-2.5/image-to-video", headers=headers, json={
    "prompt": "The camera pushes in as she turns and smiles; hair moves in the wind",
    "image_url": "https://cdn.cheapergen.ai/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"])

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-2.5/image-to-video`, {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "The camera pushes in as she turns and smiles; hair moves in the wind",
    "image_url": "https://cdn.cheapergen.ai/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);

Response

{
  "id": "gen_8c2QmX1nq0k4",
  "object": "generation",
  "model": "bytedance/seedance-2.5",
  "endpoint": "bytedance/seedance-2.5/image-to-video",
  "mode": "image-to-video",
  "status": "queued",
  "input": {
    "prompt": "The camera pushes in as she turns and smiles; hair moves in the wind",
    "image_url": "https://cdn.cheapergen.ai/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,
    "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-2.5",
  "endpoint": "bytedance/seedance-2.5/image-to-video",
  "mode": "image-to-video",
  "status": "succeeded",
  "input": {
    "prompt": "The camera pushes in as she turns and smiles; hair moves in the wind",
    "image_url": "https://cdn.cheapergen.ai/samples/portrait.jpg",
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
  },
  "output": {
    "video": {
      "url": "https://cdn.cheapergen.ai/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,
    "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 2.5 pricing

Pay per second of video. No subscription. Failed generations are refunded automatically.

Tier	Official price	Cheaper Gen.	You save
480p 16:9 · 24 fps	~~$0.107~~/s	$0.092/s	−14%
720p 16:9 · 24 fps	~~$0.231~~/s	$0.198/s	−14%
1080p 16:9 · 24 fps	~~$0.569~~/s	$0.491/s	−14%

Official price: BytePlus ModelArk official price ($10.7 / 1M tokens at 480p–720p, $11.7 at 1080p; with video input $6.4 / $7). Prices verified 2026-10-14.
Billed by video tokens; per-second figures assume 16:9 and no input video.
With reference videos, (reference video seconds + output seconds) are billed at the lower with-video token rate.

About Seedance 2.5 All Seedance 2.5 endpoints