Seedream 5.5 keeps AI image edits stable for 100 rounds

Felix Laurent 9 Nov 2026 5 min read

Creative AI

ByteDance released Seedream 5.5 on November 9, 2026. The new image model from the ByteDance Seed team keeps a picture stable across 100 rounds of edits and generates transparent assets directly. It also cuts severe text errors to 0.4%, from 2.8% on Seedream 5.0 Pro, according to ByteDance's own tests.

The model is coming to Dreamina, CapCut and BytePlus. Resellers already list it from $0.02 per image, less than half the price of Seedream 5.0 Pro.

What's new in Seedream 5.5

Seedream 5.5 is the next step after Seedream 5.0 Pro, which ByteDance released in July. ByteDance lists three main changes:

stable multi-turn editing: areas the user did not ask to change stay the same at the pixel level, without color shifts, for up to 100 rounds;
native RGBA output: images come with an alpha channel, so a subject can sit on a fully or partly transparent background;
more realistic images and clearer text: more natural light, materials and skin, less of the glossy AI look, and better dense small text in Chinese and English.

In ByteDance's main demo, the team edited a portrait of one person 100 times in a row. It changed clothes, accessories and objects on a table, and after all those rounds the model could still swap a ring or an eyeglass frame.

ByteDance Seed on X: Introducing Seedream 5.5, with its launch video

Other demos rework an interior while a box moves around the room, and generate a snowy owl with clean, transparent feather edges.

Transparency matters for designers. A generated object can go straight into a layout without background removal or edge cleanup. A set of character assets can also be reused across a series of images. ByteDance says a Pro version of Seedream 5.5 will follow.

Better text and fewer edit errors only help if the price is right.

Seedream 5.5 pricing

BytePlus, ByteDance's cloud for developers, has not published an official Seedream 5.5 price yet. WaveSpeed, a reseller that already lists the model, charges $0.02 per image at 1K or 1.5K, $0.027 at 2K and $0.054 at 3K. Edits cost the same plus $0.008 for each input image. Layer decomposition, which splits an image into editable layers, is billed per layer: a default request for 30 layers costs $0.60 at 1K.

Seedream 5.5 vs Seedream 5.0 Pro: severe text errors 0.4% vs 2.8%, price from $0.02 vs $0.045 per image — Text errors from ByteDance's tests, November 9, 2026. Seedream 5.0 Pro price from BytePlus ModelArk, Seedream 5.5 price from WaveSpeed, a reseller

For comparison, Seedream 5.0 Pro costs $0.045 per image up to about 1.5K on BytePlus and $0.09 above that. Seedream 5.0 Flash, the cheapest model in the family, cost $0.018 per image when we tested it against FLUX 3 in October. If the official price lands close to WaveSpeed's, Seedream 5.5 would cost near Flash level while beating Pro in ByteDance's tests.

Price matters less than where the model is available, and that list is still short.

Where you can use Seedream 5.5

ByteDance named three products at launch:

Dreamina, ByteDance's creative app for images and video;
CapCut, its video editor;
BytePlus, the API platform for developers and companies.

The Seed website also links to the Dola app and the BytePlus Playground for trying the model now. WaveSpeed lists three API versions: bytedance/seedream-v5.5 for generation, plus edit and layer decomposition models.

WaveSpeed's page gives the first technical limits. It lists up to 10 reference images for edits and aspect ratios from 1:3 to 21:9. Generation goes up to 3K, about 8 megapixels, and editing up to 2K. ByteDance's own pages do not confirm these numbers yet, and it has not said when each product gets the model.

The early results show how much of the launch story holds up.

How Seedream 5.5 performs in early tests

ByteDance tested the model on six professional use cases: e-commerce, marketing, film and TV, gaming, office work and fashion design. Seedream 5.5 beat Seedream 5.0 Pro in all six. In film and TV and in office work, the share of usable images more than doubled. In blind pairwise comparisons on realism in image editing, experts favored it over 5.0 Pro with a GSB score of +55.62%.

The same chart shows the limit. ByteDance's own usability rate stays below 20% overall, so most images still need a human to pick the good ones.

The first outside opinions come from lyra, an early-access user on X. She praised the detail but said the skin texture reminded her of OpenAI's GPT Image 2.5, and another user in the replies agreed. Seedream 5.5 is not ranked on Artificial Analysis or Arena yet, where its predecessor sits well behind OpenAI and Google. We compared the three in detail in Seedream 5.5 vs GPT Image 2.6 vs Nano Banana 2.1.

ByteDance's focus on editing and text follows from where the Seedream family has been heading.

How the Seedream family got here

Seedream 5.0 Lite arrived in February 2026 with a focus on reasoning before drawing. Seedream 5.0 Pro followed on July 8 as a design tool, with layer editing, infographics and multilingual text. Seedream 5.0 Flash added a cheap, fast tier and reached OpenRouter by October.

Each version moved Seedream further from one-off pictures and closer to production work. Version 5.5 continues that line: it is built for teams that edit the same image many times and need clean assets for layouts.

Is Seedream 5.5 worth using

For text-heavy designs, long edit chains and transparent assets, yes. Those are the three areas where ByteDance shows the clearest gains, and the reseller price is among the lowest for a model of this class. Native RGBA output alone saves a manual step that designers repeat every day.

For final images without human selection, not yet. All quality numbers come from ByteDance, the usability rate is still low, and independent arena results will come only in the next days or weeks. Seedream 5.5 is a cheap model worth testing now, but its claims still need outside proof.