Seedream 4.5
High-resolution generation and editing from ByteDance at a flat 2K/4K price.
Specs at a glance
Output resolution
2K-4K
Typical speed
25-50s
Aspect ratios
8 formats
Image editing
Supported
Credit pricing
Prices are per generated image and come straight from the live generator catalog — what you see here is exactly what you are charged.
| Quality tier | Credits per image |
|---|---|
| 2K | 12 credits |
| 4K | 12 credits |
About Seedream 4.5
Seedream 4.5 is ByteDance's proven high-resolution image model, delivering detailed 2K and 4K output at a single flat credit price. It established the realism the Seedream line is known for — natural lighting, believable materials, strong composition — and remains a dependable workhorse for production imagery.
Unlike its newer sibling, Seedream 4.5 also comes in an image-editing variant on Avyn AI. Upload a photo and describe the change, and it applies edits at the same high output resolution — useful when an edited image needs to stay print-sharp.
Choose 4.5 when you want Seedream realism plus editing, or simply as a high-resolution alternative for A/B-ing against Seedream 5.0 — different generations sometimes interpret the same prompt in usefully different ways.
High-resolution workhorse
Detailed 2K and 4K output at one flat credit price — dependable quality for production assets.
Editing at full resolution
The edit variant applies prompt-based changes while keeping output at 2K–4K — edited images stay sharp enough for print.
Proven Seedream realism
Natural lighting and believable materials from the model generation that made Seedream's reputation.
What Seedream 4.5 is best at
High-resolution product and lifestyle imagery.
Editing photos that must stay print-sharp after the change.
Realistic scenes and portraits at 4K.
A/B testing prompts against Seedream 5.0 for alternate takes.
Large-format backgrounds and hero images.
Prompt tips for Seedream 4.5
Use photographic vocabulary — lighting, lens, and composition terms steer it more effectively than style adjectives.
For edits, upload the image and describe both the change and what must be preserved.
Pick 4K for finals — it costs the same as 2K on this model.
Seedream 4.5 FAQ
What is Seedream 4.5?
Seedream 4.5 is ByteDance's high-resolution image model, generating 2K and 4K images at a flat credit price. On Avyn AI it supports both text-to-image generation and prompt-based photo editing.
Can Seedream 4.5 edit images?
Yes — Seedream 4.5 has an editing variant that accepts an uploaded photo plus instructions and outputs the edited result at up to 4K.
Should I use Seedream 4.5 or 5.0?
For pure text-to-image, 5.0 is newer and slightly cheaper. Choose 4.5 when you need image editing at high resolution, or to compare how a different generation interprets your prompt.
How many credits does Seedream 4.5 cost?
Seedream 4.5 costs between 12 and 12 credits per image depending on the quality tier you select. Every plan shares the same credit balance, and new accounts start with free credits.
Try Seedream 4.5 in your Avyn AI workspace
Sign in to generate with this model, compare results against the rest of the catalog, and download the version that works.