What makes Seedream 4.5 different from Seedream 4.0?expand_more
4.5 is a full-scale upgrade. ByteDance's internal MagicBench evaluation shows significant gains over 4.0 across prompt adherence, alignment, and aesthetics on both text-to-image and single-image editing. In practice that means more faithful execution of complex instructions, stronger typography, and more stable multi-image composition.
What resolutions and aspect ratios does Seedream 4.5 support?expand_more
Output resolutions are 1K, 2K, and 4K, with eight aspect-ratio presets: 1:1, 4:3, 3:4, 16:9, 9:16, 3:2, 2:3, and 21:9 — covering everything from square social posts to cinematic and portrait phone-first formats.
Can I edit multiple input images in one prompt?expand_more
Yes. Seedream 4.5 accepts up to ten reference images in a single natural-language instruction and identifies the right subject from each input. You can replace a product, copy a title, transfer a pose, and restyle a background all in one generation.
How good is text rendering?expand_more
It handles dense layouts, small captions, and handwritten scripts with strong legibility, and can translate or recolor specific words in an image without disturbing the surrounding content. Mixed CJK + Latin layouts stay aligned in both scripts.
Does it preserve the original image when I only want to edit a region?expand_more
Yes. Scoped edits — masked regions, outlined subjects, color-highlighted words — stay inside their target. Faces, lighting, and unedited pixels remain stable, which is why 4.5 is suitable for iterative professional retouching.
How do I access Seedream 4.5?expand_more
Seedream 4.5 is exposed through ByteDance's seed.bytedance.com product page and via partner API providers such as skills.video
Can I use Seedream 4.5 outputs commercially?expand_more
Commercial use is governed by the terms of the access provider — on skills.video it is covered by the skills.video Partner agreement. Check the licensing terms of the specific platform you're calling through before publishing.
Where does PromptGallery content come from?expand_more
Content in PromptGallery mainly comes from publicly shared works on skills.video, along with public posts from platforms like X (Twitter) and Reddit. If you are the original creator and prefer not to be featured, please contact us and we will remove it promptly.