What is Seedream 4.0?
Seedream 4.0 is an image model from ByteDance Seed that combines image generation and image editing in one unified architecture. According to the page, it is designed for multimodal tasks such as knowledge-based generation, complex reasoning, and keeping references consistent. Its inference is faster than the previous version, and it can output high-definition images up to 4K resolution.
In practice, you describe what you want in one sentence, either to create a new image or to edit an existing one. The examples on the site show removing a person from a photo, changing text on a poster while keeping the font and layout, replacing an animal, colorizing and repairing old photos, and converting photos into styles such as watercolor or cyberpunk. You can also upload several reference images and generate multiple outputs in one batch, or create educational illustrations, charts, timelines, and website mockups.
Key features
- Text-to-image generation up to 4K resolution
- Prompt-based image editing with a single sentence
- Batch input and output with multiple reference images
- Versatile artistic style transfer, including photos into art
- Knowledge-driven generation of charts, diagrams and educational illustrations
- Photo colorization and scratch repair
Who is it for
- designers and illustrators
- marketers creating visuals
- photographers and photo retouchers
- teachers preparing educational illustrations
Pros and cons
- Combines generation and editing in one model
- Faster inference than its predecessor, according to the page
- Supports 4K output
- Pricing details are not listed on the pricing page text provided
Seedream 4.0 pricing
The vendor does not publish prices in a readable form (often pricing is shown only after signing in).
Is Seedream 4.0 free?
The vendor does not state this clearly on the homepage or pricing page.
Seedream 4.0 alternatives
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 Nano Banana 2 | 23,99 PLN/mo | yes | Image generators |
 Magnific (formerly Freepik) | 50,50 PLN/mo | no | Image generators |
 Recraft | 10 USD/mo | yes | Image generators |
 Bing Image Creator | not listed | yes | Image generators |
 BeFunky | not listed | yes | Image generators |
 Pixlr | 2.49 EUR/mo | yes | Image generators |
All alternatives to Seedream 4.0 →
FAQ
What is Seedream 4.0 used for?
AI image generation and editing model from ByteDance Seed, producing up to 4K images from text prompts and reference images.
Is Seedream 4.0 free?
The vendor does not state this clearly on the homepage or pricing page.
How much does Seedream 4.0 cost?
The vendor does not publish prices publicly or requires sign-in.
What are the best Seedream 4.0 alternatives?
Closest alternatives: Nano Banana 2, Magnific (formerly Freepik), Recraft, Bing Image Creator, BeFunky.
Data checked October 12, 2026 on the vendor website (seed.bytedance.com).