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Seedream 5.5 image of a young woman laughing on the roof of an old car in a lavender field at sunset

ByteDanceComing soon

Seedream 5.5

ByteDance's Seedream 5.5: multi-turn edits that keep untouched areas intact, with up to 10 references at 1K or 2K.

Create with Seedream 5.0 Pro todayView pricing

What is Seedream 5.5?

Seedream 5.5 is ByteDance Seed's latest image model.

ByteDance describes it as a multimodal image generation model with more creativity and more precise execution. Its page says edits can be made over several turns while unedited regions stay intact at the pixel level, and that lighting, materials and skin textures look more natural.

BytePlus lists multi-image fusion, image series generation, style transfer and the deletion or modification of elements in an image among its features. ByteDance also cites native support for transparent and semi-transparent backgrounds. Those are the maker's claims, and Flashloop has not tested them.

Seedream 5.5 is not on Flashloop yet. When it arrives it will take a text prompt or up to 10 reference images, render at 1K in Basic quality or 2K in High quality, and offer eight aspect ratios. Transparent backgrounds and layer separation are not part of the first Flashloop release. Seedream 5.0 Pro is available now and runs on the same limits.

Provider
ByteDance
Resolution
1K (Basic), 2K (High)
Aspect ratios
1:1, 4:3, 3:4, 16:9, 9:16, 2:3, 3:2, 21:9

What Seedream 5.5 could bring

  • Multi-turn editing that keeps unedited regions intact at the pixel level, according to ByteDance

  • More natural lighting, finer materials and more refined skin textures, according to ByteDance

  • Multi-image fusion, image series generation and style transfer, listed by BytePlus

  • Up to 10 reference images on Flashloop

  • Eight aspect ratios, from 1:1 to ultrawide 21:9

Prompting tips until Seedream 5.5 lands

“A studio portrait of a man in his fifties, soft window light from the left, natural skin texture, gray linen shirt, neutral backdrop. High quality, 2K. 3:4.”

Try this prompt

Where Seedream 5.5 could fit

  • Multi-turn edits

    Change one thing per round, such as the lighting or an outfit, and keep the rest of the picture as it was.

  • Portraits and skin

    ByteDance highlights more refined skin textures, which suits close portraits and beauty shots.

  • Product and material shots

    Fabric, metal and glass are among the finer materials ByteDance says the model renders more naturally.

  • Blending several references

    Combine up to 10 references to carry a subject, a style and a setting into one image.

How Seedream 5.5 compares

Seedream 5.5 compared with other image models on Flashloop
ModelTop resolutionAspect ratiosPlan
Seedream 5.5Coming soon2K (High)1:1, 4:3, 3:4 +5All plans
Nano Banana Pro4K1:1, 3:2, 2:3 +2All plans
Nano Banana 2.14K1:1, 2:3, 3:2 +11All plans
Flux 24MP (2048x2048)1:1, 3:2, 2:3 +2All plans
Seedream 5.0 Lite3K1:1, 3:2, 2:3 +2All plans

Good to know before you generate

  • Not available on Flashloop yet
  • Output will top out at 2K on Flashloop
  • ByteDance lists transparent and semi-transparent backgrounds, but Flashloop will not offer them at launch
  • Layer separation is not part of the first Flashloop release

Until Seedream 5.5 lands on Flashloop

Create with Seedream 5.0 Pro today

Questions about Seedream 5.5

Is Seedream 5.5 available on Flashloop?

Not yet. Seedream 5.0 Pro is available now with the same 1K and 2K tiers and up to 10 references.

What aspect ratios will Seedream 5.5 support on Flashloop?

1:1, 4:3, 3:4, 16:9, 9:16, 2:3, 3:2 and 21:9.

Who makes Seedream 5.5?

ByteDance Seed.

Is Seedream 5.5 the same as Seedance?

No. Seedream is ByteDance's image family and Seedance is its video family.

Will Seedream 5.5 on Flashloop support transparent backgrounds?

Not at launch. ByteDance lists native support for transparent and semi-transparent backgrounds, but Flashloop does not offer it yet.

More image models on Flashloop

Browse all models