Seedream 4.5
Stronger subject consistency and text rendering
Try it
Leave empty for random
You can fill this in now — signing in happens when you run it, and your inputs come with you.
How to use Seedream 4.5
- Fill in Reference images (max 10) in the form on this page, and pick the task to run.
- Adjust anything in the parameter table below — the defaults are the platform's recommended values.
- Run it; signing in starts the charge, and the result (Text to image) appears above the form, ready to download.
Use it from the API
The same run, as a request. Send your API key as a bearer token; poll the returned request_uid until it is done.
curl -X POST https://api.melunox.com/v1/ai/async/tasks \
-H "Authorization: Bearer $WISAVEN_API_KEY" \
-H "X-App-Id: wisaven" -H "Content-Type: application/json" \
-d '{
"model": "seedream-4-5",
"task": "text-to-image",
"input": {
"image_urls": "https://…",
"prompt": "your prompt here",
"aspect_ratio": "1:1",
"resolution": "2K"
}
}'At a glance
- Developer
- ByteDance Seed
- Can do
- Text to image, Image to image
- Credits per run
- 4 credits
- Typical time
- ~20s
- Added
- 2026-08-11
Parameters
What the model takes. The form above is generated from exactly this list, and the API accepts the same field names.
| Parameter | Type | Default | Range / options |
|---|---|---|---|
image_urlsrequiredReference images (max 10) | Image upload | — | ≤ 10 |
promptPrompt | Long text | — | — |
aspect_ratioAspect ratio | Choice | 1:1 | 1:1 · 16:9 · 9:16 · 4:3 · 3:4 · 3:2 · 2:3 · 21:9 |
resolutionQuality | Choice | 2K | 2K · 4K |
num_imagesNumber of images | Choice | 1 | 1 · 2 · 3 · 4 |
seedSeed | Number | — | — |
What Seedream 4.5 costs
Seedream 4.5 costs about 4 credits a run, usually back in around 20 seconds. Credits are shared across every workspace, new accounts start with free ones, and a failed run is refunded.
Seedream 4.5 compared with other Image models
Same workspace, different trade-offs — credits, speed and what each one can be asked for.
| AI models | Can do | Credits per run | Typical time |
|---|---|---|---|
| Seedream 4.5 | Text to image, Image to image | 4 | ~20s |
| Seedream 4.0 | Text to image, Image to image | 3 | ~15s |
| Qwen Image 2.0 Pro | Text to image, Image to image | 6 | ~30s |
| Qwen Image Plus | Text to image | 4 | ~20s |
| Qwen Image | Text to image | 4 | ~40s |
Skills that run on this model
Questions
What can Seedream 4.5 do?
Text to image, Image to image. Fill in the parameters on this page to try it.
How many credits does Seedream 4.5 cost?
About 4 credits per run, charged at the platform's live price when you run it. One credit balance covers every workspace.
How long does it take?
Around 20 seconds; heavier settings or a queue take longer, and the page shows progress.
Do I need an account, and who owns the output?
Browsing and filling in the form need no account; running it does (new accounts start with free credits). What you generate is yours, personally or commercially, subject to the terms.
Other models like this
Where this model is used: Image·All models