ByteDance Seedream 4.5
Seedream 4.5 — ByteDance AI Image Generation Online
ByteDance’s image model: clean typography, cinematic lighting, and consistent subjects at one flat credit price up to 4K.
Seedream 4.5 is ByteDance’s image generation model, released in December 2025 by the Seed research team behind TikTok’s AI features. It ships as two models under one name, a text-to-image model and an edit model, and this platform switches between them automatically when you attach a reference image. Pricing here is unusually simple: Seedream 4.5 costs 35 credits per image whether you generate at 2K or 4K.
What is Seedream 4.5?
Seedream 4.5 follows Seedream 4.0 with three concrete upgrades: roughly ten times faster generation, tighter prompt adherence, and a cinematic rendering style with stronger spatial reasoning. It comes from ByteDance’s Seed group, which publishes the Seedream image line and the Seedance video line.
Typography is the standout. Seedream 4.5 spells long phrases correctly, keeps letterforms clean on curved and rotated text, mixes several text elements in one composition, and handles multilingual copy. Among the models in our catalog, it is the strongest alternative to GPT Image 2 for images that contain words.
The second strength is consistency. The model reads up to four reference images here and holds a subject’s identity, lighting, and palette across generations, which is what you want for character sheets, product families, and brand sets.
On Nano Banana AI, the 2K tier runs Seedream 4.5 at standard quality and the 4K tier at high quality, both for 35 credits. It needs a Premium plan for 2K; 4K unlocks on Pro. Eight aspect ratios are available, including 21:9 ultrawide.
Seedream 4.5 features
Typography that holds up
Long phrases, curved text, and multilingual copy come out spelled correctly with clean letterforms. Rare outside the two or three best text models.
One flat price to 4K
35 credits per image at 2K and at 4K. Most models charge double or more for the top tier; Seedream 4.5 does not.
Subject consistency
Up to four reference images keep a character or product consistent in identity, lighting, and color across a whole series.
Cinematic look by default
Film-style lighting and composition without prompt gymnastics, plus 21:9 ultrawide support for banner and screen formats.
Seedream 4.5 examples with prompts
Real, unretouched images generated with Seedream 4.5 (ByteDance Seedream 4.5). The caption under each image is the exact prompt used.
Seedream 4.5: before and after
The left image was generated with Seedream 4.5, then edited by Seedream 4.5 itself using this prompt: “Change the perfume bottle to frosted emerald green glass and switch the marble surface to dark slate, keep the same composition and lighting”.
How to use Seedream 4.5
- 1
Pick Premium or Pro
Premium ($19.99/month) runs Seedream 4.5 at 2K; Pro ($29.99/month) unlocks the 4K high-quality tier.
- 2
Select Seedream 4.5 in the composer
Open Create and choose Seedream 4.5. Eight aspect ratios appear, including 21:9.
- 3
Write the prompt, quote the copy
Put any words the image should contain in quotes and describe placement. Attach up to four references to keep a subject consistent.
- 4
Generate at 2K or 4K
Both tiers cost 35 credits, so choose by output size, not by budget.
Seedream 4.5 specifications
| Developer | ByteDance (Seed research team) |
|---|---|
| Released | December 2025 |
| Modes | Text-to-image and a dedicated edit model, switched automatically |
| Speed | About 10x faster than Seedream 4.0 |
| Strengths | Typography, subject consistency, cinematic lighting |
| Quality tiers | 2K = standard quality, 4K = high quality, same credit price |
| Resolutions & credits | 35 credits (2K) · 35 credits (4K) |
| Aspect ratios | 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3, 21:9 |
| Reference images | Up to 4 |
| Included in plans | Premium, Pro |
Seedream 4.5 pricing: credits and images per month
Every plan uses one credit balance across all models. This is what Seedream 4.5 costs on each plan that includes it.
| Plan | Monthly credits | Credits per image | ≈ Seedream 4.5 images / month |
|---|---|---|---|
| Premium ($19.99/mo) | 4,000 | 35 (2K) | up to 114 |
| Pro ($29.99/mo) | 10,000 | 35 (2K) / 35 (4K) | up to 285 |
Seedream 4.5 vs similar models
| Model | Engine | Max resolution | Credits from | Best for |
|---|---|---|---|---|
| Seedream 4.5 | ByteDance Seedream 4.5 | 4K | 35 | Posters and product families with clean typography, up to 4K at one flat price. |
| Nano Banana 2 | Gemini 3.1 Flash Image | 4K | 40 | Creators who need high-resolution detail and reliable text without sacrificing speed. |
| Nano Banana Pro | Gemini 3 Pro Image | 4K | 90 | Professionals and agencies who need the highest-quality, print-ready AI images. |
| GPT Image 2 | OpenAI GPT Image 2 | 4K | 30 | Images with text in them, exact layouts, and 4K renders from an OpenAI model. |
What Seedream 4.5 is best at
Posters and title cards
Multi-line copy, stylized lettering, and curved text that stays legible. Typography is the model’s core strength.
Product families
Reference images hold a product’s identity and palette across a series of shots for stores and catalogs.
Cinematic scenes
Film-style lighting and 21:9 framing for key art, banners, and video thumbnails.
4K on a budget
At 35 credits flat, it is the cheapest way on the platform to generate native 4K images in volume.
Seedream 4.5 FAQ
What is Seedream 4.5?
Seedream 4.5 is ByteDance’s image generation model, released in December 2025. It pairs a text-to-image model with a dedicated edit model and is known for accurate typography, subject consistency, and a cinematic rendering style. Here it generates at 2K and 4K for a flat 35 credits.
Who makes Seedream?
ByteDance, the company behind TikTok. Its Seed research team publishes the Seedream image models and the Seedance video models.
Is Seedream 4.5 free?
No. Nano Banana AI has no free tier. Seedream 4.5 is included in Premium ($19.99/month, 4,000 credits, 2K) and Pro ($29.99/month, 10,000 credits, up to 4K). At 35 credits per image, Premium covers about 114 generations a month.
How much does Seedream 4.5 cost?
35 credits per image, at 2K and at 4K alike. The flat price makes it the cheapest native-4K model in our catalog: Nano Banana 2 charges 90 credits at 4K and GPT Image 2 charges 80.
Does Seedream 4.5 do 4K?
Yes, on the Pro plan. Our 4K tier runs the model at its high quality setting for the same 35 credits as 2K.
Can Seedream 4.5 edit images?
Yes. Seedream 4.5 Edit is a separate model trained for edits, and the platform switches to it automatically when you attach one to four reference images. Describe the change in the prompt; identity and lighting carry over.
Seedream 4.5 vs Nano Banana 2: which should I use?
Both are strong all-rounders with good text. Seedream 4.5 (35 credits flat) is cheaper at every resolution and leans cinematic; Nano Banana 2 (40 to 90 credits) leans clean and commercial and comes from Google’s Gemini line. For 4K volume work, Seedream 4.5 costs less than half as much.
What aspect ratios does Seedream 4.5 support?
Eight: 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3, and 21:9 ultrawide. All are native, not cropped.
Explore more
Pricing
Choose the perfect plan to unlock more creativity with premium AI-powered image generation.
Standard
Perfect for creators and content makers
- 1,500 Credits per month
- High-quality AI image generation
- Text-to-image & image-to-image
- Premium templates library
- Priority support
Premium
For professionals and power creators
- 4,000 Credits per month
- Ultra high-quality generations
- Advanced AI models & styles
- Priority processing & support
- Commercial usage rights
Pro
Most advanced models for premium visuals
- 10,000 Credits per month
- All models incl. Nano Banana PRO
- All resolutions (1K, 2K & 4K)
- Premium-quality generation & smart edits
- Priority processing & support
Need more credits?
All plans include the option to purchase additional credit packs when you need extra generating power. Scale your creativity without limits.
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