Seedream 4.0
ByteDance
ByteDance's unified image generation and editing model (2025), combining creation and editing in a single architecture. Seedream 4.0 produces up to 4K images with ~1.8-second generation, strong reference consistency, and batch processing, and is served via API partners like fal and Replicate.
Strengths
- Unified image generation and editing in one architecture
- Up to 4K resolution output
- Very fast ~1.8-second generation
- Strong reference consistency across edits
- Efficient batch processing
Caveats
- Proprietary - API/app access only
- Served mainly through third-party API partners
- Newer ecosystem than Western incumbents
- Vendor
- ByteDance
- License
- Proprietary
- Modalities
- textimage
Capabilities
Vision
Audio
Video
Tool Use
Resources
Pricing
ByteDance publishes its own per-image price on BytePlus ModelArk: seedream-4-0-250828 — input image price Free, output image price USD 0.03 per image (billed on the actual number of generated images for sequential generation). Sibling rows: seedream-4-5-251128 0.04, seedream-5-0-lite-260128 0.035.