Seedream 4.5 API for Developers

Seedream 4.5 API

Generate and edit premium images with ByteDance's Seedream 4.5 via API. Multi-image consistency, strong typography, and high-fidelity professional output — no GPU setup required.

Get API Key — FreeAPI Docs
No watermarks on paid plans
Subscription or usage-based
8 aspect ratios
Auto-scaling
Seedream 4.5 example: comic-style anti-heroes on a rooftop at night under a full moon
Comic rooftop
Seedream 4.5 example: photorealistic man in a suit and sunglasses on a sunlit city street
Street portrait
Seedream 4.5 example: armored hero fighting a rock creature on a city street at sunset
Hero battle
Seedream 4.5 example: playing card layout with queen of hearts typography and mirrored portrait
Queen card
Seedream 4.5 example: portrait of a woman framing her face with hands like a camera viewfinder against brick graffiti
Viewfinder shot
Seedream 4.5 example: capybara in snow holding an energy drink can like a selfie
Capybara selfie
Seedream 4.5 example: studio portrait with orange and cool blue split lighting on the face
Split lighting
Seedream 4.5 example: woman in tactical gear aiming a sniper rifle over a cityscape at dusk
Tactical sniper

Trusted by teams at

meta
nba
loreal
puma
cisco
deel
shopify
decathlon
dallas-mavericks
pittsburgh-pirates
tala
dyson
dazn
wsc-sports

Everything You Need to Ship Seedream 4.5

Premium image generation with multi-image consistency and strong typography.

Multi-Image Consistency
Generate visually consistent images across batches for campaigns and series.
Strong Typography
Render readable text within images — strong for posters, ads, and branded content.
High-Fidelity Output
Premium visual quality with detailed textures, lighting, and composition.
Wide Aspect Ratio Support
8 aspect ratios including auto, 16:9, 9:16, 4:3, 3:2, 1:1, 4:5, and 2:3.
Auto-Scaling Infrastructure
Scales compute to match demand automatically. No GPU provisioning or cold starts.
Commercial-Ready
Paid plans support non-watermarked outputs for commercial delivery.

Integrate in 3 Steps

Add premium AI image generation with consistency to your app in minutes.

1
Get Your API Key
Sign up and generate an API key from the Developer dashboard. Seedream 4.5 requires a Creator, Pro, or Business plan.
2
Send Your Request
Upload your source image and provide a natural language edit instruction to the AI image editor endpoint with the seedream-v4.5 model.
3
Get Results & Scale
Receive premium-quality images via response. Deploy to production — infrastructure scales automatically.
Get Started Free

Code Examples

Seedream 4.5 in a few lines of code. Install an SDK or use the REST API directly.

from magic_hour import Client
from os import getenv

client = Client(token=getenv("API_TOKEN"))
res = client.v1.ai_image_editor.generate(
    assets={"image_file_path": "/path/to/source.png"},
    image_count=1,
    model="seedream-v4.5",
    name="Seedream 4.5 Edit",
    aspect_ratio="1:1",
    resolution="1k",
    style={"prompt": "Enhance detail and color while keeping composition the same"},
)
API Docs

SDKs for Every Stack

Official open-source SDKs with full TypeScript/type support. Install and start building.

Magic Hour Python
pip install magic-hour
Magic Hour Node.js
npm install magic-hour
Magic Hour Go
go get github.com/magichourhq/magic-hour-go
Magic Hour Rust
cargo add magic-hour

Seedream 4.5 API Pricing

Subscription plans for standard usage.

Prefer usage-based pricing?

Email us or message us in Intercom and we will set up your usage-based pricing.

API Calculator
Use our calculator to estimate your API costs.
Tier
Estimated monthly cost

$1.73

Based on 24 FPS

Built for Builders

See how developers use the Seedream 4.5 API to power real products.

Campaign Consistency
Generate visually consistent campaign assets across multiple creatives.
Typography-Heavy Design
Create posters, banners, and ads with readable AI-generated text.
Premium Brand Content
Produce high-fidelity brand imagery for luxury and premium markets.
Print & Publication
Generate print-ready assets with typography and visual consistency.
Stylized Content Series
Create consistent content series with matching visual style across batches.
Professional Design Assets
Generate polished design assets for presentations and client delivery.
Try before integrating

Try Seedream 4.5 Free — No Code Required

Test quality first with the free tool, then plug the same output quality into your app with the API when you are ready.

Try Free Seedream 4.5 Tool API Docs

Seedream 4.5 API — Frequently Asked Questions

Magic Hour's Seedream 4.5 API lets developers generate and edit premium images using ByteDance's Seedream 4.5 model via REST API.

Seedream 4.5 adds multi-image consistency, stronger typography rendering, and higher-fidelity output. It's the premium tier of the Seedream family.

50/75/100 credits per image at 1K/2K/4K resolution for editing workflows.

No. Seedream 4.5 requires a Creator, Pro, or Business plan.

auto, 16:9, 9:16, 4:3, 3:2, 1:1, 4:5, and 2:3.

Yes. Seedream 4.5 is one of the strongest models for rendering readable text and typography within generated images.

Use Seedream 4.5 when you need multi-image consistency, typography, and premium quality. Use Seedream 4 for creative exploration at lower cost.

Official SDKs for Python, Node.js, Go, and Rust.

Start Building with the Magic Hour Seedream 4.5 API

Free credits on signup. SDKs for Python, Node.js, Go, and Rust. Production-ready in minutes.

Get API Key — FreeRead the Docs