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.
No watermarks on paid plans
Transparent per-credit pricing
Subscription or usage-based
8 aspect ratios
Auto-scaling
Comic rooftop
Street portrait
Hero battle
Queen card
Viewfinder shot
Capybara selfie
Split lighting
Tactical sniper
Trusted by teams at
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.
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"},
)Estimate Your API Costs
Build with model-specific APIs for video, image generation, and image editing. Compare inputs, examples, and capabilities across Magic Hour's supported models.
Pricing tier options
Images Per Month
10 images
images
Recommended plan
Pro Annual
$300
/year
300,000 credits per year
Up to 3.5 hours of video
Up to 30,000 images
PRO ANNUAL covers your usage
- 25,000credits / month
- 25,000credits / month
Estimated usage
Included
TOTAL BILL
$300
/year
SDKs for Every Stack
Official open-source SDKs with full TypeScript/type support. Install and start building.
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.
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.
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.
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.
Magic Hour offers subscription plans starting at $15/month (Creator), $39/month (Pro), and $99/month (Business), each including a monthly credit allotment. Seedream 4.5 costs 50/75/100 credits per image at 1K/2K/4K resolution for editing workflows. You can also contact us to set up usage-based (pay-as-you-go) pricing. Seedream 4.5 requires a paid plan (Creator, Pro, or Business) and is not available on the free tier.
Sign up at magichour.ai/developer — no credit card required — to get an API key instantly. The key works across all Magic Hour API endpoints, but Seedream 4.5 itself requires a paid plan (Creator, Pro, or Business). Once subscribed, call it with our Python, Node.js, Go, or Rust SDKs.
Signing up is free and gives you an API key, but Seedream 4.5 is not available on the free tier — it requires a paid plan (Creator, Pro, or Business). Paid plans unlock Seedream 4.5 along with higher credit limits, concurrency, and commercial use rights.