ByteDance · image model
Seedream 5.5
Seedream 5.5 is ByteDance's latest image-generation model in our dataset (public preview), released Nov 9, 2026. Proprietary, API access only. ByteDance Seed's Seedream 5.5 image creation model, introduced Nov 9, 2026, with vendor-reported 100-round editing and native RGBA output. Verified against vendor sources on Nov 10, 2026.
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Primary source: https://seed.bytedance.com/en/blog/more-realistic-images-more-stable-editing-across-100-rounds-introducing-seedream-5-5/. We are the fast, independent index; the vendor’s own page is the source of record for these model facts.
Seedream 5.5 at a glance: takes text, image in; returns image.
- ReleasedNov 9, 2026
- LicenceProprietary
Key facts
Vendor-reported facts are read from the linked vendor page on the date shown above; we did not run the model. Independently tested means we ran it; no fact on this page is. Editorial is our own classification, not a vendor claim. Where a linked page does not itself state a value, the row says so. How to read provenance.
| Fact | Value | Label | Source |
|---|---|---|---|
| Vendor | ByteDance | Editorial | n/a |
| Released | Nov 9, 2026 Date on the official ByteDance Seed blog post. | Vendor-reported | source |
| Status | public preview | Editorial | n/a |
| Input | text, image The official post says creators can generate assets from text descriptions or reference images. | Vendor-reported | source |
| Output | image | Vendor-reported | source |
| Licence | Proprietary | Vendor-reported | source |
Where Seedream 5.5 sits in our data
- Released Nov 9, 2026 (week 46 of 2026), in November 2026. Other models in our data released that month: Gemini Robotics 2.5, Live 3, PAN 2, Scribe v3.
- All releases by date: AI model releases by month · new AI models this week.
Alternatives to Seedream 5.5
Image models from other vendors that share at least one of our groups with Seedream 5.5. Comparable on paper, from each model’s sourced facts; we have not run them.
- GPT-Image-2.6 FlareOpenAI · Both in: Image · $5 in / $30 out per 1M tokens · released Nov 4, 2026
- GPT-Image-2.6 SunburstOpenAI · Both in: Image · $5 in / $30 out per 1M tokens · released Nov 4, 2026
- MAI-Image-2.7Microsoft · Both in: Image · released Oct 27, 2026
- Nano Banana 2.1Google · Both in: Image · 1K image $0.0336; 2K image $0.0504; 4K image $0.113 (per image) · released Oct 6, 2026
What we tested
Nothing yet. We have not run Seedream 5.5 ourselves, so every fact on this page is Reported from the sources below. When we do test it, the scope will be stated here and in our test logs. See methodology.
Not verified, left out
We could not confirm these on a vendor page, so we do not state them.
- The English official post does not state pricing, a public API id, or context or output token limits.
- The Chinese official post says Seedream 5.5 is rolling out on Jimeng, Doubao, Doubao Work, and Volcano Ark, and names Doubao-Seedream-5.5 as a Volcano Ark experience-center path; we did not independently confirm those products are live.
- Quality, usability, GSB and text-corruption figures are ByteDance Seed's own MagicArena evaluations, not an independent benchmark.
- A Pro version of the Seedream 5.5 series is described as forthcoming, with no date.
Seedream 5.5 FAQ
When was Seedream 5.5 released?
ByteDance released Seedream 5.5 on Nov 9, 2026; it is listed as public preview. Source.
Is Seedream 5.5 open weights?
No. The weights are not published; the licence is listed as Proprietary. Source.
Has Agentic Weekly tested Seedream 5.5?
Not yet. Every fact on this page is Reported: read from the linked vendor pages, not measured by us.
Sources
Compare and guides
We have no head-to-head page or guide that names Seedream 5.5 yet. These hubs cover the models we do compare.
All model comparisons · All guides · Model releases by month
Related briefs on Seedream 5.5
- ByteDance Seed introduces Seedream 5.5, its next-generation image creation model (Reported; first seen 2026-11-10 15:53 UTC)
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