更新日: 2026-06-06
Doubao Seedream
Seedream image family through the OpenAI Images-compatible public contract. Clients keep using /v1/images/generations; ByteDance official and other third-party channels stay internal as providers only.
Public Models
“Beta” here means the customer-facing contract and official capability definition are aligned first, while production carrier closure and live artifact evidence are still being completed.
Public Contract
Request Parameters
Reference Image Limits
Seedream 4.0,4.5, and5.0 liteofficially support up to14reference images- maximum single reference image size is
10MB - officially supported input formats now include
jpeg,png,webp,bmp,tiff, andgif - officially supported input aspect-ratio range is
1/16to16
Request Examples
Response Example
Official Billing Truth
The currently confirmed official truth is billing per successfully generated image, not token-display pricing.Alignment Notes
- The customer-facing contract has been narrowed to
/v1/images/generations Seedream 4.5currently centers on official2Kand4Ksizing, with default2048x2048optimize_prompt_options.modeis currently aligned only asstandardforSeedream 4.5and5.0 lite;fastis not a public commitment yetSeedream 3.0stays as a compatibility alias, but the official-alignment focus of this page is now4.0 / 4.5 / 5.0 lite