How to Build a Consistent Product Mockup Set with Seedream 4.0
One product, eight images, same lighting and angle. A reference-image workflow in Seedream 4.0 that keeps a campaign visually coherent without a studio shoot.
Seedream 4.0 is ByteDance’s image generation model that produces up to 4K resolution, renders legible text, and edits several reference images in one prompt. It is free to try in Dreamina and Jimeng, with API access billed per image.
What is Seedream 4.0?
ByteDance’s Seed team shipped Seedream 4.0 in September 2025 as a unified generation-and-editing model. The interesting part is that it does not treat editing as a separate pipeline: you hand it up to several images plus instructions, and it composites them in one diffusion pass. Text rendering improved enough to use on posters and packaging mockups, which is where older diffusion models fell apart. You can run it through ByteDance’s Dreamina/Jimeng apps or the Volcano Engine API.
What features does Seedream 4.0 have?
- Native output up to 4K (4096px on the long edge)
- Legible in-image text for posters, packaging, and UI mockups
- Multi-reference editing: combine 2-6 images in one prompt
- Generation speed around 1.8 seconds for a 2K image on the API
- Available via Dreamina, Jimeng, and the Volcano Engine (Volcengine) API
- Bilingual prompts in English and Chinese
What makes Seedream 4.0 stand out?
- Text accuracy beats most open diffusion models for short strings.
- Consistent characters across multiple generations, useful for storyboards.
- Strong at East Asian typography, which Western models still fumble.
Who should use Seedream 4.0?
- Poster and social ad design with real headlines baked in
- Product mockups combining a photo of your item with a styled background
- Character sheets for comics where the same face must repeat
- E-commerce listing images at print-ready 4K
- Game concept art iterated from two or three reference boards
Quick Summary: Seedream 4.0
- Seedream 4.0 is ByteDance’s text-to-image and editing model.
- It outputs up to 4K and renders readable text inside images.
- Multi-reference editing accepts up to six input images per prompt.
- Free trials live in Dreamina and Jimeng; API billed per image.
- Weak spot: occasional over-smoothing on gritty, high-noise styles.
Official site: https://seed.bytedance.com/en/seedream4_0
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