Seedream 5.5
Seedream 5.5 isn’t on zzo.ai yet. We’re adding it — leave your email and we’ll tell you the day it’s live.
Seedream 5.5 is ByteDance’s image generation and editing model, released on 9 November 2026 in ByteDance’s own apps. Its API isn’t open yet, so zzo.ai can’t run it today; we will add it the day the API opens. Until then, the generator here runs GPT Image 2.6.
Updated 2026-11-09
Made with Seedream 5.5
Made with Seedream 5.5 in its own app, first take each. “Use this prompt” runs it on GPT Image 2.6 here.
What we know so far
Released on 9 November 2026 by ByteDance Seed as the successor to Seedream 5.0 Pro. It is live in ByteDance’s apps (Doubao and Jimeng in China, and Dreamina, where our samples were made).
Jiemian · 2026-11-09Multi-round editing: ByteDance says you can keep editing the same image for up to 100 rounds, with the parts you didn’t ask to change kept the same down to the pixel and no colour drift.
ChainCatcher · 2026-11-09Transparent output: images can come out with a real alpha channel (transparent or semi-transparent backgrounds), for stickers, logos and product cutouts.
ByteDance Seed · 2026-11-09More natural light, finer materials and skin texture, with less of the glossy, overexposed look; complex characters and dense small text come out more accurately.
ByteDance Seed · 2026-11-09ByteDance reports a 0.4% rate of severe text errors and 1.7% of slight ones, and says 5.5 is ahead of GPT Image 2.5 Sunburst and Nano Banana 2.1 on text structure and realism. These are ByteDance’s own tests; GPT Image 2.6 was not in them.
IT Home · 2026-11-09API: ByteDance says it is coming soon on Volcano Engine Ark, with no date. A Pro version of Seedream 5.5 will follow later, also without a date.
NetEase · 2026-11-09
Seedream 5.5 next to the image models on zzo.ai
Checked 9 November 2026. Seedream 5.5’s entries are ByteDance’s own claims; we haven’t been able to test it on zzo.ai yet.
| Seedream 5.5 | GPT Image 2.6 | Nano Banana 2.1 | |
|---|---|---|---|
| Made by | ByteDance | OpenAI | |
| Released | 9 November 2026 | 4 November 2026 | 6 October 2026 |
| On zzo.ai | Not yet: waitlist open | Yes, pay per image | Yes, pay per image |
| Transparent PNG | Yes, native alpha (ByteDance) | Yes | Not on zzo.ai |
| Editing | Up to 100 rounds, unchanged areas kept (ByteDance) | Edits with up to 4 reference images | Edits with reference images |
| Text in images | Dense small text and complex characters (ByteDance) | Strong on posters and labels (our tests) | See its model page |
| Animated GIFs | Not announced | Yes | No |
| Price | Not published yet | Per image, see the model page | Per image, see the model page |
Is Seedream 5.5 on zzo.ai yet?
Not yet. ByteDance released Seedream 5.5 on 9 November 2026 in its own apps, and says the API will follow on Volcano Engine Ark. zzo.ai runs models through their official APIs, so we can’t offer it until that opens, and we’ll add it as soon as it does. Join the waitlist above and we’ll email you once.
What to use until then
For posters, labels and packaging with exact text, transparent PNGs or animated GIFs, use GPT Image 2.6. For photoreal images and larger sizes, use Nano Banana 2.1. Both run in the generator at the top of this page, priced per image, with no subscription. Every sample above has a “Use this prompt” button that runs the same prompt on GPT Image 2.6, so you can compare for yourself.
About the samples on this page
Seedream 5.5 isn’t on zzo.ai yet, so we made the samples in Dreamina, ByteDance’s own app, with Seedream 5.5, on release day, and kept the first take of each. The edit sample is the portrait above it, edited once. They show what the model makes, not what zzo.ai returns; once it runs here, we will add samples made on zzo.ai.
Try these meanwhile
Questions
Is Seedream 5.5 out? When was it released?
Yes. ByteDance released Seedream 5.5 on 9 November 2026 in its own apps (Doubao and Jimeng in China, and Dreamina). Its API, which sites like zzo.ai need, isn’t open yet.
What is Seedream 5.5?
It is ByteDance’s newest image generation and editing model, made by its Seed team and following Seedream 5.0. It makes images from a prompt and edits images you give it.
Does Seedream 5.5 have an API?
Not yet. ByteDance says the API is coming soon on Volcano Engine Ark, without a date, and no international API had opened when we checked on 9 November 2026.
When will Seedream 5.5 be on zzo.ai?
The day its API opens to us. Leave your email at the top of this page and we’ll tell you when it’s live. Until then you can make images with GPT Image 2.6 or Nano Banana 2.1 here.
How much will Seedream 5.5 cost on zzo.ai?
We will set the price per image when the API opens and the upstream price is known, and show it on this page. As with every model here, you pay per image with credits that never expire, and there is no subscription.
Can I use Seedream 5.5 without paying?
Not on zzo.ai: every image will cost credits. ByteDance’s own apps have their own allowances, which differ by app and country.
What is new compared with Seedream 5.0?
ByteDance lists four things: editing the same image for up to 100 rounds while unchanged areas stay pixel-identical, native transparent output, more natural light and skin, and more accurate small and complex text. It also says generation is faster, without a number.
Is Seedream 5.5 better than GPT Image 2.6 or Nano Banana 2.1?
No independent comparison exists yet. ByteDance’s own tests put 5.5 ahead of GPT Image 2.5 Sunburst and Nano Banana 2.1 on text structure and realism, but they didn’t include GPT Image 2.6, released five days earlier. We will compare them with the same prompts once 5.5 runs on zzo.ai.
Can Seedream 5.5 make transparent PNGs?
ByteDance says it outputs images with a real alpha channel. Our sticker sample, made in Dreamina, came out with a fully transparent background. On zzo.ai today, GPT Image 2.6 makes transparent PNGs.
Can it put accurate text in images?
ByteDance says it handles dense small text and complex characters better than before. In our poster sample all nine names, stage times and the footer line came out spelled right, in one take.
Can I edit part of an image and keep the rest?
That is the main new feature: ByteDance says unchanged areas stay identical across up to 100 edits. In our sample we changed only the sweater and added a necklace; the face, hair, light and background stayed the same.
Can I use Seedream 5.5 images commercially?
Once it runs on zzo.ai, images you make here are covered by our terms, like every other model. ByteDance hasn’t published separate terms for Seedream 5.5 that we could check yet.
Is there a Seedream 5.5 Pro?
Not yet. ByteDance says a Pro version of Seedream 5.5 will follow later, with more complex context and instructions, but it has given no date.
Where can I try Seedream 5.5 today?
In ByteDance’s own apps, such as Dreamina, where our samples on this page were made with Seedream 5.5 (one take each). On zzo.ai it will be in the generator as soon as the API opens.
Update log
- Page created on release day. Seedream 5.5 is live in ByteDance’s apps; its API is announced as coming soon. Waitlist opened; samples made in Dreamina added.