Image APIActive

seedream-4-5 API

Generate images with ByteDance's Seedream 4.5 via API in One. Text-to-image and image editing. 12 credits per image (~$0.12). Webhook support.

Get API Key View Docs

Model IDseedream-4-5

Use this in the request body model field.

Endpoint/api/v1/images/generations

The currently implemented BFF route.

Outputimage

Input types: text, image

AuthBearer API key

Keys are managed by the shared dashboard.

WebhookSupported

Use callback_url on supported async tasks.

Live capabilities

These capabilities come from the current model config and backend route. Unreleased APIs are not listed.

ByteDance's latest image generation technology

Both text

Both text-to-image and image editing

Webhook support for async workflows

Basic and high quality modes

Request format

Clients call same-origin API routes; the server BFF forwards to the matching Worker.

MethodEndpointCreditsPurpose

POST/api/v1/images/generations12 credits

Seedream 4.5 — ByteDance's cutting-edge image generation model. Supports text-to-image and image editing with basic/high quality modes.

Parameters

promptstring

Text description of the image

Required

modelstring

Sub-model: "seedream/4.5-text-to-image" or "seedream/4.5-edit"

Optional · Default seedream/4.5-text-to-image

aspect_ratiostring

Aspect ratio: 1:1, 4:3, 3:4, 16:9, 9:16, 2:3, 3:2, 21:9

Optional · Default 1:1

qualitystring

Quality level: "basic" or "high"

Optional · Default basic

image_urlsarray

Array of image URLs for edit mode (required for seedream/4.5-edit)

Optional

Example request

curl -X POST https://apiin.one/api/v1/images/generations \
  -H "Authorization: Bearer aio_your_api_key" \
  -H "Content-Type: application/json" \
  --data-raw '{
  "model": "seedream/4.5-text-to-image",
  "prompt": "A serene mountain lake at sunrise with reflections, photorealistic",
  "aspect_ratio": "16:9",
  "quality": "high"
}'

Models on the same endpoint

These live models use the same implemented BFF endpoint and can be switched by changing the model field.

🧠cogview-4image · 4 credits/api/v1/images/generations

flux-2image · 5 credits/api/v1/images/generations

grok-imagineimage · 5 credits/api/v1/images/generations

kling-image-o1image · 6 credits/api/v1/images/generations✦ideogram-v3image · 8 credits/api/v1/images/generations🌐imagen-4image · 8 credits/api/v1/images/generations

Integration flow

These steps use the current live route and shared account system; login, payment, orders, credits, and profile remain shared.

Create a shared API key

Create a key in the existing dashboard. Top-up, orders, credit balance, and profile stay in the shared console.

Call the real endpoint

Send a request with the endpoint, model id, and parameters shown on this page. /api/v1/images/generations

Poll task status

Async media and tool jobs use /api/v1/tasks/{task_id}; chat models return a direct response.

Task status route

After creating image, video, audio, or tool tasks, poll the real task endpoint for results.

GET/api/v1/tasks/{task_id}Check generation task status and result.

Pricing

~$0.12 per image (12 credits)

Base cost$0.12

Credits12

BillingSuccessful requests

Use cases

These workflows are supported by the current model and backend node.

Generate high-quality images from text descriptions

Edit existing images with text instructions

Create product visuals and marketing assets

Build AI image tools powered by ByteDance technology

FAQ

How much does Seedream 4.5 cost?

Each image costs 12 credits (~$0.12), for both text-to-image and image editing modes.

Does Seedream 4.5 support image editing?

Yes. Use the model "seedream/4.5-edit" with image_urls to edit existing images based on text instructions.

What quality levels are available?

Two quality levels: "basic" (standard quality) and "high" (enhanced quality).