Seedream (4.0/4.5)
ByteDance class B live
ByteDance's closed flagship; API ~$0.03/image via BytePlus, up to 4K, strong reference consistency and text rendering; briefly topped the arena at launch.
Layer 1 — factual axes
| API & price | public · ~$0.03/image via BytePlus ModelArk | official | source ↗ 2026-07-04 |
|---|---|---|---|
| Max resolution | up to 4K (~4096px), flexible aspect ratios | secondary | source ↗ 2026-07-04 |
| Control | multi-image editing, reference consistency, strong dense-text rendering, img2img stylization | official | source ↗ 2026-07-04 |
| Weights | closed | official | source ↗ 2026-07-04 |
| Free tier | limited (200-image BytePlus trial) | secondary | source ↗ 2026-07-04 |
Layer 2 — output quality
1190 / 1600
ByteDance’s closed flagship; API ~$0.03/image via BytePlus, up to 4K, strong reference consistency and text rendering; briefly topped the arena at launch.