The Seedream 4.5 image editing model has achieved an all-round improvement based on the overall scaling of the model: it can accurately identify and stably lock the main subject in multi-image combinations, and maximize the retention of the original image's features and detailed textures.
Seedream V4.5 is the latest text-to-image model developed by the ByteDance Seed team. It achieves all-round improvement through overall model scaling and supports professional-level text rendering, diverse artistic styles, and accurate semantic understanding.
ByteDance Seed team's next-gen unified model combining text-to-image generation and intelligent image editing in one architecture. Professional text rendering, multi-reference composition, and precise semantic understanding.
Prompt
"Minimalist art exhibition poster, title 'MINIMAL ART 2025', black and white color scheme, geometric composition..."
Top scores on MagicBench. Enhanced subject consistency, instruction adherence, spatial reasoning, and aesthetic performance.
Built on Cross-Image Semantic Alignment Network (CISAN). One model handles both text-to-image and image editing—describe what you want in natural language.
High-precision text-image layouts. Poster headlines, fine print, brand logos—all rendered crystal clear. Ad creatives made simple and efficient.
Reference up to 14 images, output 6 with consistency maintained. Swap products, copy text styles, position elements—multi-source blending feels seamless.
"Add a helmet", "remove the background", "change the outfit"—describe your edits in plain text. The model executes directly, no masks needed.
Recognizable even with drastic style changes. Photo to anime, photo to LEGO—subject identity stays intact. Facial features and lighting preserved at pixel level.
Auto-optimizes lighting, color, and depth for professional-grade visuals. Simple or complex scenes, aesthetic coherence remains stable.
One unified model for both generation and editing. Create stunning images from text or transform existing ones with natural language.
No post-processing needed. Specify text directly in your prompt. Seedream 4.5 understands instructions like "title says 'HELLO WORLD'" and naturally integrates text into the image while maintaining crystal-clear readability.
Reference up to 10 images per edit. Swap products between scenes, copy text styling, position elements across sources. The model maintains depth, perspective, and lighting consistency automatically.
Seedream 4.5 has powerful semantic understanding, accurately parsing complex creative instructions. Whether it's multi-subject scenes, spatial relationships, or abstract concept visualization, it precisely realizes your creative vision.
Generate high-fidelity images with fine light and shadow, balanced shadows, and full 4K output support. The model delivers crisp details, cinematic rendering, and stable clarity at large format sizes—ideal for posters, product photography, and professional creative work.
Enhanced detail preservation in textures, materials, and lighting. Generated visuals maintain balanced tones and unified style. Whether simple or complex scenes, aesthetic coherence remains stable—supporting workflows that demand consistent, refined image quality.
Seedream 4.5 provides professional visual creation and editing solutions across industries
Generate event posters, exhibition promotions, and brand visuals with professional typography and legible text.
Generate product images, swap backgrounds, create promotional banners and detail page graphics.
Generate and edit eye-catching visuals for social media, blogs, and short-form video platforms.
Rapidly iterate ad creatives, A/B test different visual concepts and style variations.
Generate consistent series with up to 14-image coherence. Perfect for product lines and brand assets.
Background replacement, clothing changes, style transfer, and inpainting - all through natural language.
Common questions about the Seedream 4.5 Image Generation & Editing API.
Seedream 4.5 is ByteDance Seed team's next-generation unified image model that combines text-to-image generation and intelligent image editing in a single architecture. It excels at professional text rendering, multi-reference composition, and precise semantic understanding - making it ideal for both creating new images and transforming existing ones.
Seedream 4.5 has professional-grade text rendering capabilities, accurately rendering both Chinese and English text in generated images. From large poster headlines to fine print in product details, everything is crystal clear and precisely positioned - perfect for commercial design scenarios.
Seedream 4.5 uses natural language for editing - no masks or selection tools needed. Simply describe what you want to change: 'replace the background with a beach scene', 'change the outfit to formal wear', or 'translate the text to Chinese'. The model interprets spatial references directly from your prompt.
You can reference up to 10 images per edit for complex workflows. For example: 'replace the product in Figure 1 with that in Figure 2' or 'copy the text style from Figure 3 to the top'. The model automatically maintains depth, perspective, and lighting consistency when integrating elements.
Yes. Images generated through the Seedream 4.5 API belong to you and can be used for commercial purposes. An invisible digital watermark is added for AI content traceability, which does not affect visual quality or normal use.
