# Seedream 4.5

> Seedream 4.5 is ByteDance's image generation and editing model, released in December 2025 as the upgrade to Seedream 4.0, with sharper typography, dense small text and poster layouts. It renders at 2K to 4K and edits from several input images while keeping faces, light and colour. On Kenerate AI it costs 12 credits per image at any size, takes up to 10 reference images and offers 13 sizes up to 4096×4096.

URL: https://kenerateai.com/models/bytedance/seedream-4-5
Publisher: Kenerate AI (https://kenerateai.com)
Last updated: 18 October 2026

## Key facts
- Official name: Seedream 4.5
- Model ID: bytedance/seedream-4.5 (BytePlus: doubao-seedream-4-5-251128)
- Maker: ByteDance Seed
- Released: December 2025
- Abilities: Text to image · multi-image editing
- Output: 2K to 4K
- On Kenerate: 12 credits per image, any size
- References: Up to 10
- Sizes: 13 presets, 2048×2048 to 4096×4096
- Weights: Closed (API only)

## Steps
1. Open the model — Go to /app/image and pick Seedream 4.5 (the button on this page selects it for you). Sign in free to get started.
2. Write the prompt — Describe layout, subject, style and light in plain sentences. Put every on-image word in quotes and say where it goes.
3. Pick a size — Choose one of 8 sizes at 2K or 5 at 4K — square, portrait, story, widescreen, poster or photo. The price is the same.
4. Edit with references — Upload up to 10 images and describe the change and what must stay — logo, face, product or colours.

## In depth

### What changed from Seedream 4.0
ByteDance describes Seedream 4.5 as an overall scale-up of Seedream 4.0, with better typography and dense small-text rendering, and editing that keeps a reference's face, lighting and colour tone [1]. Its own MagicBench comparison reports gains in prompt adherence, alignment and aesthetics, but publishes no numbers in text, so we don't quote any.
- Posters, logos and brand visuals — the use cases ByteDance highlights.
- Multi-image editing — pick out one element from several inputs and change material, colour or text.
- 2K–4K output only, with no 1K draft size [2].

### Where Seedream 4.5 fits on Kenerate
Kenerate runs five Seedream versions. Seedream 5.0 Pro is the newest and most detailed; 5.0 Lite gives 2K–4K for less; 5.0 Flash and V4 are the cheap draft options. Seedream 4.5 sits between them at a flat 12 credits for any size — a good pick for type-heavy posters, packaging and comic panels at 4K.

References:
[1] Seedream 4.5 — ByteDance Seed: https://seed.bytedance.com/en/seedream4_5
[2] Seedream 4.5 guides — Runware docs: https://runware.ai/docs/models/bytedance-seedream-4-5/guides
[3] Seedream 4.5 on Atlas Cloud: https://www.atlascloud.ai/blog/Seedream-4.5-is-now-available-on-Atlas-Cloud-transforming-image-generation-models-from-toys-into-productive-tools

## FAQ
Q: What is Seedream 4.5?
A: Seedream 4.5 is ByteDance Seed's image generation and editing model, released in December 2025 as the upgrade to Seedream 4.0. ByteDance says it improves typography, dense small text, poster and logo layouts, and keeps faces, lighting and colour tone when editing. It renders at 2K to 4K and is a closed model, available through APIs and apps such as Kenerate AI.

Q: How do I use Seedream 4.5 online?
A: Open Kenerate AI's image studio, pick Seedream 4.5, write a prompt and choose a size. It runs in the browser with no API key or install. Each image costs 12 credits at any size, from 2048×2048 up to 4096×4096, and you can upload up to 10 reference images to edit or keep a product, logo or character consistent.

Q: Is Seedream 4.5 free?
A: Not on Kenerate: Seedream 4.5 is a paid model at 12 credits per image, bought as one-time credit packs (no subscription required). The free plan covers models such as Flux 2 Dev, Flux 2 Klein and Qwen Image 2.0. Other sites list Seedream 4.5 API prices around $0.036–$0.04 per image.

Q: What is the difference between Seedream 4.5 and Seedream 4.0?
A: Seedream 4.5 is the newer of the two. ByteDance reports better prompt adherence, alignment and aesthetics on its internal MagicBench benchmark, plus stronger typography and small-text rendering. On Kenerate, 4.5 renders 2K–4K for 12 credits, while Seedream V4 also offers 1K sizes and costs 8.1 credits.

Q: Seedream 4.5 or Seedream 5.0 — which should I use?
A: For most new work, try the 5.0 family first: Seedream 5.0 Pro gives the most detail and the best edits, and 5.0 Lite renders 2K–4K for 10.5 credits. Seedream 4.5 is still a good choice for posters, labels and multi-panel layouts where exact text matters, and for keeping results consistent with earlier 4.5 projects.

Q: How good is Seedream 4.5 at text in images?
A: Strong in our tests. A jazz poster with a large headline and a small date line, and a product label reading “LUMEN SERUM”, both came out spelled correctly on the first try. Put the exact words in quotes and say where they go — top, bottom, on the label.

Q: How many reference images does Seedream 4.5 take?
A: Up to 10 on Kenerate. Some API providers list up to 14. Upload a product, a logo, a face or a style reference and describe what should change and what must stay; an edit costs the same 12 credits as a new image.

Q: What resolutions does Seedream 4.5 support?
A: Only 2K and 4K — the model rejects images under roughly 2560×1440 pixels. On Kenerate that means 8 sizes at 2K (square, 3:4, 4:3, 9:16, 16:9, 2:3, 3:2, 21:9) and 5 at 4K, up to 4096×4096. The price is 12 credits at every size.

Q: Can I use Seedream 4.5 images commercially?
A: Images you generate on Kenerate follow Kenerate's terms of service. Seedream 4.5 itself is a closed ByteDance model with no downloadable weights, so there is no separate model licence to accept. Check trademarks and likeness rights for anything you put in a poster or ad.

## Related pages
- Seedream (all versions): https://kenerateai.com/model/seedream
- Seedream 5.0: https://kenerateai.com/models/bytedance/seedream-5-0
- Seedream 5.0 Pro: https://kenerateai.com/seedream-v5-0-pro
- Seedance 2.0: https://kenerateai.com/models/bytedance/seedance-2-0
- All models: https://kenerateai.com/model

## Sources
- Seedream 4.5 — ByteDance Seed: https://seed.bytedance.com/en/seedream4_5
- Seedream 4.5 guides — Runware docs: https://runware.ai/docs/models/bytedance-seedream-4-5/guides
- Seedream 4.5 on Atlas Cloud: https://www.atlascloud.ai/blog/Seedream-4.5-is-now-available-on-Atlas-Cloud-transforming-image-generation-models-from-toys-into-productive-tools