ByteDance · 4 models
Seedream API
ByteDance's Seedream image models through one API: Seedream 5.0 Flash, Seedream 5.0 Pro, Seedream 5.0 Lite and Seedream 4.5. Image from $0.0154/image, up to 26% below official. Text-to-image and editing, up to 4K.
- Models
- 4
- image
- From
- $0.0154/image
- Seedream 5.0 Flash
- Below official
- up to 26%
- Seedream 5.0 Pro
- Failed runs
- $0
- refunded automatically
Lineup
Seedream image models on CheaperGen
Starting price per image at each model's lowest tier, next to ByteDance's official price. Select a column to sort.
T2I · Edit | 4K | Up to 10 | $0.0309/image 2K | $0.04/image | up to 23% | |
T2I · Edit | 2K | Up to 10 | $0.0333/image 1K | $0.045/image | up to 26% | |
T2I · Edit | 2K | Up to 10 | $0.0317/image 1K | $0.035/image | up to 9% | |
T2I · Edit | 2K | Up to 10 | $0.0154/image 1K | $0.018/image | up to 14% |
Model picker
Which Seedream model is right for you?
Pick what you need and what matters most; we'll suggest a model and load it in the playground below.
Your Seedream pick
Seedream 5.0 Flash
From $0.0154/image
- The lowest starting price: $0.0154/image
Then: Seedream 4.5, Seedream 5.0 Lite
How to choose
Which Seedream model should you use?
- Newest
- Seedream 5.0 Flash, released September 2026.
- Lowest price
- Seedream 5.0 Flash from $0.0154/image (1K).
- Highest resolution
- Seedream 4.5 — up to 4K.
- Built for volume
- Seedream 5.0 Flash and Seedream 5.0 Lite: faster, lower-cost versions for drafts and high volume.
Prices side by side
Seedream API pricing per image
Each Seedream image model at every size it offers — the lowest price per image, with ByteDance's official price struck through. Lowest per row in orange.
| Size | Seedream 5.0 Flash | Seedream 5.0 Pro | Seedream 5.0 Lite | Seedream 4.5 |
|---|---|---|---|---|
| 1K | $0.0154/image | $0.0333/image | $0.0317/image | — |
| 2K | $0.0154/image | $0.0665/image | $0.0317/image | $0.0309/image With a monthly plan: Pro $0.0307Max $0.0305 |
| 4K | — | — | — | $0.0309/image With a monthly plan: Pro $0.0307Max $0.0305 |
Monthly plans lower prices on most models (shown under each price); you can still pay as you go. Pro $499/month · Max $4,999/month. Plan prices don't apply to requests with the safety checker off.
Try it
Try the Seedream models
Switch models with the tabs. Runs on your balance at the price on the button; failed runs are refunded.
Capabilities
Seedream image models compared
| Feature | Seedream 5.0 Flash | Seedream 5.0 Pro | Seedream 5.0 Lite | Seedream 4.5 |
|---|---|---|---|---|
| Text to image | Yes | Yes | Yes | Yes |
| Image editing | Yes | Yes | Yes | Yes |
| Sizes | 1K, 2K | 1K, 2K | 1K, 2K | 2K, 4K |
| Edit inputs | Up to 10 | Up to 10 | Up to 10 | Up to 10 |
| Aspect ratios | 8 | 8 | 8 | 8 |
| Released | Sep 2026 | Jul 2026 | Jun 2026 | Dec 2025 |
Quick start
Call the Seedream API
One request shape for every Seedream model: POST /v1/run/{endpoint} with your key, then poll the generation or pass a webhook_url. Switching models means changing the endpoint.
| Model | Endpoint |
|---|---|
| Seedream 5.0 Flash · Text to Image | bytedance/seedream-5.0-flash/text-to-image |
| Seedream 5.0 Flash · Image Edit | bytedance/seedream-5.0-flash/edit |
| Seedream 5.0 Pro · Text to Image | bytedance/seedream-5.0-pro/text-to-image |
| Seedream 5.0 Pro · Image Edit | bytedance/seedream-5.0-pro/edit |
| Seedream 5.0 Lite · Text to Image | bytedance/seedream-5.0-lite/text-to-image |
| Seedream 5.0 Lite · Image Edit | bytedance/seedream-5.0-lite/edit |
| Seedream 4.5 · Text to Image | bytedance/seedream-4.5/text-to-image |
| Seedream 4.5 · Image Edit | bytedance/seedream-4.5/edit |
Seedream 5.0 Pro · Text to Image
const API = "https://cheapergen.com/api/v1";
const headers = {
Authorization: `Bearer ${process.env.CHEAPERGEN_API_KEY}`,
"Content-Type": "application/json",
};
// 1. Submit the job
let job = await fetch(`${API}/run/bytedance/seedream-5.0-pro/text-to-image`, {
method: "POST",
headers,
body: JSON.stringify({
"prompt": "Editorial product photo of a matte-black espresso machine on travertine, soft window light, 85mm",
"aspect_ratio": "1:1",
"size": "2K"
}),
}).then((r) => r.json());
// 2. Poll until it finishes (or pass webhook_url and skip polling)
while (job.status === "queued" || job.status === "running") {
await new Promise((r) => setTimeout(r, 3000));
job = await fetch(`${API}/generations/${job.id}`, { headers }).then((r) => r.json());
}
console.log(job.status === "succeeded" ? job.output.images[0].url : job.error);Go deeper
Pricing, cost and docs for each Seedream model
Seedream 5.0 Flash
14% below Official
Seedream 5.0 Pro
26% below Official
Seedream 5.0 Lite
9% below Official
Seedream 4.5
23% below Official
FAQ
Seedream API questions
Seedream 5.0 Flash, Seedream 5.0 Pro, Seedream 5.0 Lite and Seedream 4.5 are developed by ByteDance; CheaperGen provides API access and does not own them. Trademarks belong to their respective owners.