Seedream 4.5 API
imageImage generation by bytedance
Studio-quality lighting, fast generation, good for commercial photography.
Call Seedream 4.5 from Node.js, Python, or any HTTP client. No GPU provisioning, no cold starts, no Docker images — just an API key and a prompt.
Free credits included. Powering 1M+ generations daily.
Start in 60 seconds
Install the official SDK for Node.js or Python, drop in your API key, and generate your first image.
npm install getimg-ai
import GetimgAI from "getimg-ai";
const client = new GetimgAI();
const result = await client.images.generate({
model: "seedream-4-5",
prompt: "3D palm figure made out of tiny dust-like voxels, looking to the left, smoothly desintegrating into background, medium portrait shot, purple monochrome",
aspect_ratio: "1:1",
resolution: "2K",
output_format: "jpeg"
});
console.log(result.data[0].url);How Seedream 4.5 API works
Send a prompt, get an image URL back — one synchronous call.
Send a request
POST to /v2/images/generations with your prompt and output format.
Get your image
The response includes the image URL plus a usage object with the exact cost.
What you can build with Seedream 4.5
Every example uses the same authentication and works with the official getimg-ai and getimg SDKs, or plain HTTP.
Text to image
Generate an image using just a text prompt.
import GetimgAI from "getimg-ai";
const client = new GetimgAI();
const result = await client.images.generate({
model: "seedream-4-5",
prompt: "3D palm figure made out of tiny dust-like voxels, looking to the left, smoothly desintegrating into background, medium portrait shot, purple monochrome",
aspect_ratio: "1:1",
resolution: "2K",
output_format: "jpeg"
});
console.log(result.data[0].url);Image editing
Edit or restyle an existing image with an instruction-based prompt.
import GetimgAI from "getimg-ai";
const client = new GetimgAI();
const result = await client.images.generate({
model: "seedream-4-5",
prompt: "Restyle the subject in warm cinematic studio lighting.",
aspect_ratio: "1:1",
resolution: "2K",
output_format: "jpeg",
images: [
{
url: "https://your-bucket.s3.amazonaws.com/source.png"
}
]
});
console.log(result.data[0].url);Multi-reference generation
Combine up to 10 reference images for character consistency, style, or composition guidance.
import GetimgAI from "getimg-ai";
const client = new GetimgAI();
const result = await client.images.generate({
model: "seedream-4-5",
prompt: "A product hero shot blending the style of the reference images.",
aspect_ratio: "1:1",
resolution: "2K",
output_format: "jpeg",
images: [
{
url: "https://your-bucket.s3.amazonaws.com/reference-1.png"
},
{
url: "https://your-bucket.s3.amazonaws.com/reference-2.png"
}
]
});
console.log(result.data[0].url);Seedream 4.5 pricing
Pay per image. No subscriptions, no minimums, no idle GPU costs.
Seedream 4.5
$0.04 /image
/v2/images/generationsStudio-quality lighting, fast generation, good for commercial photography.
| Resolution | Price | Images for $10 |
|---|---|---|
| 4K | $0.04 /image | 250 |
| 2K | $0.04 /image | 250 |
More from bytedance
Other bytedance models available through the same API.
Seedream 5.0 Lite
Unified multimodal image model with deep reasoning and online search, delivering strong prompt alignment and precise generation/editing control.
Seedance 1.5 Pro
Cinematic camera control, dynamic scenes, expressive characters.
Seedream 4
Unified generation and editing, knowledge-based visuals.
Seedance 1.0 Pro Fast
Quick generation, balanced quality and speed.
Seedream 4.5 API — frequently asked questions
How do I use the Seedream 4.5 API?
Install the official Node.js (npm install getimg-ai) or Python (pip install getimg) SDK, or call the endpoint directly over HTTP from any client.
Make a POST request to /v2/images/generations with your API key and a JSON body containing the model ID (seedream-4-5) and a prompt. The response includes the generated image URL.
See the API documentation for the full parameter reference.
Which SDK should I use?
Use getimg-ai for Node.js and TypeScript projects, and getimg for Python. Both wrap the same REST API with typed inputs, retries, and built-in polling for video generations.
For other languages — Go, Rust, Java, Ruby, PHP — call the HTTP endpoints directly. Every example on this page includes a cURL snippet you can port to any HTTP client.
What resolutions does Seedream 4.5 support?
Seedream 4.5 supports the following resolutions: 2K, 4K across 8 aspect ratios (1:1, 2:3, 3:2, 4:3, 3:4, 16:9, 9:16, 21:9).
How much does Seedream 4.5 cost?
Seedream 4.5 uses pay-per-image pricing with no subscriptions or minimum commitments. Rates vary by resolution. See the pricing table above for exact rates per image.
Does Seedream 4.5 support reference images?
Yes. Seedream 4.5 accepts up to 10 reference images. Reference images guide the generation toward a specific style, composition, or subject. See the example above.
Start building with Seedream 4.5
Grab an API key, install the SDK, ship image generation today.
Looking for other models? View all available models