Seedream 4.5 — 4K AI Image Generator with Text Rendering

Text rendering excellence.4K (2048×2048).Up to 14 references.Free to try.

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Seedream 4.5 vs Other AI Image Models

How Seedream 4.5 stacks up on text rendering, multi-reference, and resolution.

Feature	Seedream 4.5	Nano Banana 2	Midjourney V7
Text rendering accuracy	Best in class (multilingual, curved/rotated)	Good	Limited
Max output resolution	4K (2048×2048)	4K	2K (upscale)
Reference images per generation	Up to 14	Up to 7	Omni Reference (1+)
Unified gen + edit (no masks)	Yes — single architecture	Yes	Editor with masks
Batch per call	Up to 6 images	1–4	4 grid
Free trial	Yes — starter credits	Yes	Paid

What is Seedream 4.5?

Seedream 4.5 is ByteDance's flagship text-to-image model and one of the strongest available for brand and marketing work. Its standout feature is text rendering: while most AI models struggle with typography, Seedream 4.5 generates accurate spelling for complex words and phrases, handles multiple text elements in a single image, supports diverse font styles, and renders curved and rotated text — making it ideal for marketing materials, signage, posters, and branded content. It integrates image generation and editing into a single unified architecture: instead of layer masks or selection tools, you describe edits using natural language. Ranks #10 on the LM Arena global leaderboard with a score of 1147.

Seedream 4.5 Key Features

Five capabilities that make Seedream 4.5 the brand-ready AI image pick.

Text Rendering Excellence

Accurate spelling for complex words and phrases, multiple text elements in one image, diverse font styles, curved and rotated text, multilingual content. Where most models fail, Seedream 4.5 ships.

4K Output (2048×2048)

High-resolution output up to 2048×2048 pixels — 4K-quality images suitable for professional applications, print, and large-format campaigns.

Unified Gen + Edit Architecture

A single architecture interprets spatial references directly from your prompt. Describe edits in natural language — no layer masks, no selection tools. Edit and generate in the same flow.

Multi-Image Reference (Up to 14)

Process up to 14 reference images at once — character + product + scene + style + lighting reference all considered together. Consistent subjects across complex compositions.

Cinematic Lighting Simulation

Real-world photography simulation with dramatic shadows, volumetric fog, and realistic skin textures. Strong on portrait, product, and editorial-style imagery.

How to Use Seedream 4.5

From a blank canvas to a finished brand image in three steps.

Step 01
Pick your starting point
Type a prompt, upload up to 14 reference images, or both. Seedream 4.5 fuses references into one cohesive composition while holding identity.
Step 02
Add text and edits in plain language
Want a logo or signage in the image? Write the literal text in quotes ("the box reads 'Daily Roast'"). Want to change something? Describe it ("swap the background to a beach").
Step 03
Pick size & aspect ratio
Choose aspect ratio (1:1, 16:9, 4:3, 3:4, 9:16, 2:3, 3:2, 21:9) and resolution (2K / 4K). Generate up to 6 images per call, run side-by-side variants.

Capabilities at a Glance

Reference inputs: Text · Image (up to 14)
Aspect ratios: 1:1 · 16:9 · 4:3 · 3:4 · 9:16 · 2:3 · 3:2 · 21:9
Resolution: 2K · 4K (2048×2048)
Edit modes: Natural language (no masks)
Batch: Up to 6 images per call
Strength: Text rendering · cinematic lighting

Seedream 4.5 Prompting Tips

Seedream 4.5 reads explicit text instructions literally — write the words you want rendered in quotes. Best structure: subject + setting + text element + lighting + composition + style. Example: "A coffee shop storefront at golden hour + window sign reads 'Daily Roast — since 2014' + warm rim light + medium shot, slight low angle + cinematic editorial." For curved or rotated text, describe the geometry explicitly ("curved label wrapping the bottle neck", "text rotated 15° downward"). For brand work, upload product/logo references and tell Seedream what each is for. For edits, describe the change directly ("replace the background with a marble surface") — no masks needed.

Frequently Asked Questions

Seedream 4.5 leads on text rendering — accurate multilingual text including curved and rotated, ideal for packaging and signage. It also supports up to 14 reference images per generation (more than Nano Banana 2), and integrates generation and editing into a single architecture without masks.

Yes — that's its flagship capability. It handles complex words, multiple text elements, diverse fonts, curved and rotated text, and multilingual content — including the kinds of text most other models butcher.

Up to 4K (2048×2048). Suitable for print, large-format campaigns, and detailed product imagery.

Up to 14 per generation. Seedream 4.5 maintains consistent subjects, lighting, and style across them.

Yes. Seedream 4.5 integrates gen + edit into one architecture — describe the change in natural language, no layer masks needed.

Yes — every Zopia account gets starter credits to try Seedream 4.5 with no commitment.

Yes. ByteDance permits commercial use of Seedream 4.5 output. Avoid real-person likenesses and copyrighted IP — refer to the provider's terms.