What Is Seedream 4.5?
Seedream 4.5 is the reference-faithful branch between Seedream 4 and the newer 5-series. It accepts up to ten ordered images, preserves small product and identity details well, and can render the result directly at 2K or 4K.
Seedream Model Versions
Seedream 4.5
10 references · native 4K
From 2 Credits
Seedream 5 Pro
A production model for coherent scenes, accurate edits and reference-heavy creative work.
- Resolutions: 1K / 2K
- Reference images: up to 10
- Modes: Text to Image, Image to Image, Edit Image, Multi-reference
- Speed: Balanced
Seedream 5 Lite
A lower-cost Seedream 5 tier for fast generation, reference-led edits and native 4K output.
- Resolutions: 2K / 4K
- Reference images: up to 4
- Modes: Text to Image, Image to Image, Edit Image, Multi-reference
- Speed: Fast
Seedream 4.5
High-fidelity multi-image editing with stronger typography than Seedream 4.
- Resolutions: 2K / 4K
- Reference images: up to 10
- Modes: Text to Image, Image to Image, Edit Image, Multi-reference
- Speed: Balanced
Seedream 4
Native 4K, bilingual text, built for producing sets rather than single images.
- Resolutions: 1K / 2K / 4K
- Reference images: up to 6
- Modes: Text to Image, Image to Image, Edit Image, Multi-reference
- Speed: Fast
What Is Seedream 4.5 Best For?
- Multi-product compositions
- Identity-preserving edits
- Dense poster text
- Native 4K campaign assets
How to Use Seedream 4.5
- Choose a generation or edit mode.
- Upload and number every reference.
- State both what changes and what stays fixed.
- Render the final direction at 4K.
Seedream 4.5 Settings Explained
Reference Images
Up to ten images are accepted; identify each input by its order.
Resolution
Use 2K while iterating and 4K only for the selected final.
The panel above shows only the parameters Seedream 4.5 actually supports. Switch versions and unsupported controls disappear rather than sitting there doing nothing.
Seedream 4.5 Prompt Examples
Reference assembly
Use the person from image 1, the jacket from image 2 and the room from image 3; preserve the face and garment details exactly, soft editorial light
Campaign poster
Premium skincare poster with the exact headline “NIGHT RENEWAL”, product centered, dark indigo gradient, fine botanical linework
Seedream 4.5 Test Results
Testing in progress
Every model runs the same eight-category prompt set — portrait, product, poster text, anime character, interior, multi-reference, image editing and character consistency — recording generation time, success rate, text accuracy and identity retention. That run has not finished for Seedream 4.5, so this page shows no scores. We do not publish numbers we have not measured.
Seedream 4.5 Limitations
- 2K is the minimum output tier
- Ten references need numbered roles in the prompt
- Important copy still needs proofreading
Seedream 4.5 Pricing and Credits
Credits scale with resolution and image count. The Generate button always shows what this run costs.
2K
2 credits / image
4K
2 credits / image
Failed generations cost 0 credits.
Commercial Use and Image Rights
Commercial use is governed by ByteDance's model terms and the selected service terms.
- Model used: Seedream 4.5
- Model developer: ByteDance
- The inference route is managed internally and may change without changing the selected model
- Uploads are sent only to the configured inference service needed to complete the generation
- You can delete any generation from your history at any time
Frequently Asked Questions
How many images can I reference?+
Up to ten. The input images plus generated images must remain within the upstream operation limit.
Is this silently routed to Seedream 5?+
No. It calls the exact Seedream 4.5 generation or editing operation.
Model Updates and Changelog
- 2026-08-25 —— Added exact text-to-image and ten-reference editing routes.
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