November 12, 2026

Seedream 5.5 is now available on LetzAI

ByteDance's newest image model brings stable multi-round editing, native transparent PNGs and sharper small text, up to 2K.

ByteDance's Newest Image Model, Live on LetzAI

Seedream 5.5 is now available on LetzAI for image generation and image editing. ByteDance released it on November 9, and it is the successor to Seedream 5 Pro, built for edits that hold up over many rounds and for assets you can drop straight into a design.

It works in Studio, Chat, Canvas, and the API. You can still tag your own LetzAI models with @.

A white-haired model in black clothes and sunglasses, seated in a metal chair in a bare white room, shot with a fisheye lens

A white-haired model in a black turtleneck and leather skirt, seated in a chrome chair beside glass display boxes

What's new

Edits that stay put — change one thing and everything you did not mention stays the same, round after round. ByteDance reports pixel-level consistency across up to 100 consecutive edits.
Transparent PNGs in one step — generate stickers, logos, and cutouts with a native transparent or semi-transparent background. No background removal pass needed.
Cleaner small text — dense captions, labels, and multilingual copy stay sharp.
More natural light and materials — skin, fabric, glass, and metal read as more physical.

A perfume bottle with a dark blue cap on orange rocks in a desert landscape at golden hour

A man and a woman in white linen sitting on the bow of a boat above clear blue water

A New York street with steam rising, an American flag, a yellow taxi and a person hailing it

A model in a colorful silk cape standing on lava rock with glowing magma behind her

A rainy city street at dusk with a person in a clear rain poncho and a bus stop screen showing Chinese text

Edit, then edit again

Drop in up to 10 reference images and describe what should change. Say what must stay, then keep going: swap a color, change an object, adjust the light. Each round builds on the last without drifting from the original.

A white-haired woman with tattoos and sunglasses holding a barbed-wire baseball bat against a yellow background

Transparent backgrounds

Switch the background setting under the prompt to Transparent and Seedream 5.5 returns a PNG with an alpha channel. It also works in edits, so you can pull a subject out of an existing photo as its own layer. Good for product cutouts, sticker sheets, logos, and compositing in Canvas.