Seedream 4.5
Seedream 4.5 image generation from $0.08 — 18 aspect ratios and reference-image editing through one API key.
ByteDance's Seedream 4.5 image model. Strong photoreal and illustrated output with the widest aspect-ratio range on the platform — 18 options from 1:2 to 21:9 — plus reference-image editing.
No credit card required. Takes 30 seconds.
2,400+
Developers
1.2M+
API calls served
100+
Endpoints
$0.01
Per call
Yep, that's it.
Try it live
Enter a prompt and generate an image with Seedream 4.5.
Drop image or click to upload
For image-to-image editing
Pricing
Per-image: from $0.08/image
Endpoint
/v1/media/queue
Strengths
From 1:2 and 9:21 to 20:9, Seedream 4.5 covers phone-native, banner, and ultra-wide crops that most image models don't expose.
Handles both photographic realism and stylized illustration well, so one model can cover a mixed content pipeline.
Accepts an uploaded image to edit, restyle, or extend while preserving the original subject.
At around $0.08 an image it sits at the affordable end of flagship-class generators, which suits high-volume catalog and social work.
Quick start
Copy this snippet and start making calls with Seedream 4.5.
// Step 1: Submit job
const res = await fetch('https://api.yepapi.com/v1/media/queue', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({
"model": "bytedance-seed/seedream-4.5",
"prompt": "A night market alley in the rain — neon reflections pooling on wet cobblestones, steam rising from a noodle cart, a lone cyclist blurred in motion, cinematic 35mm look",
"options": {
"aspectRatio": "1:1"
}
}),
});
const { data } = await res.json();
const jobId = data.jobId;
// Step 2: Poll for result
const status = await fetch(`https://api.yepapi.com/v1/media/status/${jobId}`, {
headers: { 'x-api-key': 'YOUR_API_KEY' },
});
const { data: job } = await status.json();
// job.status: "pending" | "processing" | "completed" | "failed"
// job.result: { text?, image?, audio?, video? }Why use Seedream 4.5 through YepAPI?
Seedream 4.5 API — ByteDance image generation from $0.08
Seedream 4.5 is ByteDance's current text-to-image model, strong on both photorealism and illustration and unusually flexible on framing: 18 aspect ratios spanning 1:2 portrait through 21:9 cinematic, plus an auto mode.
Through YepAPI you call Seedream 4.5 on `/v1/media/queue` with one key at roughly $0.08 per image, and can pass a reference image for editing instead of generating from scratch.
Start generating in 30 seconds
$5 free credit on signup. No credit card required. Pay per call.
What developers say
“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Frequently asked questions
ByteDance's Seedream 4.5 image model. Strong photoreal and illustrated output with the widest aspect-ratio range on the platform — 18 options from 1:2 to 21:9 — plus reference-image editing.
Pricing for Seedream 4.5 through YepAPI is based on usage. No monthly minimums — you only pay for what you use.
Sign up for a free API key, then send requests to the /v1/media/queue endpoint.
Ready to use Seedream 4.5?
$5 free credit on signup. No credit card required. Pay per call.
Explore more models
Seedance 2.0
ByteDanceAI video generation API powered by ByteDance's Seedance 2.0. Generate videos from text, images, or video references with built-in audio generation.
Seedance 2.0 Fast
ByteDanceFast AI video generation powered by ByteDance's Seedance 2.0. Lower cost, faster output with same flexibility.
Seed 2.0 Lite
ByteDanceAccess Seed 2.0 Lite through one API key. ByteDance's latest bilingual model.