FLUX and Seedream: a spec comparison
FLUX and Seedream in ClickBait work with pictures from text and from references. Seedream 4.5 and 4 render 4K and take up to 8 references, Seedream 5.0 Pro and Flash take up to 10. FLUX.2 stays at 1K and 2K, while Flux Kontext takes one picture for editing. A custom frame size is available in Seedream 4.5 and 5.0 Lite, and FLUX has none.
Updated:
FLUX and Seedream specs side by side
| Parameter | FLUX | Seedream |
|---|---|---|
| Developer | Black Forest Labs | ByteDance |
| Versions | FLUX.2, Flux Kontext | Seedream 5.0 Flash, Seedream 5.0 Pro, Seedream 5.0 Lite, Seedream 4.5, Seedream 4 |
| Modes | text to image, edit from photos | text to image, edit from photos |
| Resolution | 1K, 2K | 1K, 2K, 4K, 1.5K, custom size |
| Aspect ratios | 1:1, 9:16, 16:9, 3:4, 4:3, 3:2, 2:3, 21:9, 9:21 | 1:1, 9:16, 16:9, 3:4, 4:3, 3:2, 2:3, 21:9 |
| References | up to 8 images | up to 10 images |
| Prompt | up to 5,000 characters | up to 5,000 characters |
| Price from | from 3 tokens | from 2 tokens |
When to use FLUX
- Editing one picture: Flux Kontext takes one reference and gives the 9:21 format.
- When 4K is not needed: FLUX.2 works in 1K and 2K.
When to use Seedream
- A custom frame size: you set it in Seedream 4.5 and 5.0 Lite.
- 4K: Seedream 4.5 and Seedream 4 give it.
- More references: up to 10 in the 5.0 Pro and Flash versions, against 8 for FLUX.2.
Model pages
Frequently asked questions
Where is 4K available?
Only in Seedream 4.5 and Seedream 4. FLUX.2 tops out at 2K.
Which model takes more references?
Seedream 5.0 Pro and Flash, up to 10. FLUX.2 takes up to 8, and Flux Kontext takes one.
Can I set a custom frame size?
Yes, in Seedream 4.5 and 5.0 Lite. In FLUX the format is picked from a list.
How much does each one cost?
The token price depends on the version and resolution. The generate button shows the exact amount before you start.
How do I know which one fits my task?
Run the same prompt in FLUX and Seedream, then compare the result and the token cost. The run button shows the amount before you start.