Free AI Image Generator - Seedream 5.5 Agent
ByteDance's image model for pro workflows: 100-round edits, transparent PNGs.
Upgrade (Save 30%)Seedream 5.5 is ByteDance's AI image model for professional work: 100 stable edit rounds, native transparent PNGs, and dense small-text errors cut to 0.4%.
Three upgrades separate Seedream 5.5 from every image model before it. Each one removes a limit that used to force a re-roll or a manual cleanup pass.
Seedream 5.5 locks unedited areas at the pixel level while each edit lands precisely, so subject and lighting hold across a hundred rounds.
An alpha channel is built in, so products and characters export on transparent backgrounds with clean edges and no separate cutout step.
Severe text corruption drops to 0.4% on dense mixed-language layouts, so complex glyphs in infographics and posters stay crisp and legible.
Seedream 5.5 is measured against the two models that set the current standard, GPT Image 2.5 Sunburst and Nano Banana 2.1, plus its own predecessor.
| Feature | Seedream 5.5 | GPT Image 2.5 Sunburst | Nano Banana 2.1 | Seedream 5.0 Pro |
|---|---|---|---|---|
| Severe text corruption | 0.4% | 0.7% | 1.7% | 2.8% |
| Minor text corruption | 1.7% | 7.4% | 3.0% | 2.6% |
| Realism preference (T2I) | Reference | Seedream +37.29% | Seedream +21.79% | Seedream +39.44% |
| Realism preference (I2I) | Reference | Seedream +36.05% | Nano Banana +6.18% | Seedream +55.62% |
| Continuous edit rounds | 100, pixel-locked | Not reported | Not reported | Not reported |
| Native RGBA output | Yes, alpha channel | Not reported | Not reported | Not supported |
Open NoteGPT, type what you need, or upload the image to revise. Attach up to eight references so the model holds your subject and style.
Ask for one change per round: swap the outfit or add a label. Seedream 5.5 applies each edit and keeps every untouched region as it was.
Download the result as a transparent or opaque PNG, or split the scene into layers for compositing. Each version can seed the next round.
Hand it the image your team already approved and revise it a hundred times without a single drift or cutout. Start free online, no API key required.
Try Seedream 5.5 Free
Lena Ortiz
E-commerce Visual Lead
Our lookbook needed one model in forty outfit variants, and every generator we tried drifted by the tenth change, with skin going gray and the backdrop shifting hue. Seedream 5.5 held the pose, face, and lighting through all forty edits, and each outfit exported as a transparent PNG straight into layout. A week of retouching became one afternoon.
David Kim
Brand Designer
Transparent assets are the part everyone underrates. Generate, cut out, and clean edges used to be three separate steps, and hair or sheer fabric always needed manual work. Seedream 5.5 outputs the alpha channel natively, so characters and product shots drop onto any background with clean edges and go to review the same day.
Marta Kowalski
Game Asset Artist
Layer decomposition changed how we build sprite scenes. Seedream 5.5 splits a scene into separate transparent layers, so we reuse the same character across settings while texture and silhouette stay consistent. On a running-sequence test, every frame came out aligned without a single outline redrawn by hand.
Chen Wei
Marketing Designer
Infographics die when one glyph breaks. Our knowledge cards pack dense small text around illustrations, and earlier models garbled complex characters at small sizes. Seedream 5.5 kept every label legible through a twenty-round revision chain, the first time we shipped AI-assisted posters without a proofing panic.
Sofia Ricci
Photo Studio Director
The realism gains show up in lighting. Backlit portraits used to come out glossy and overexposed, with that plastic AI sheen customers notice. Seedream 5.5 renders skin texture and shadows closer to natural photography, and dense captions in both English and Chinese stayed readable where our old model garbled them.
Tom Becker
Agency Owner
Cost per finished asset is the number that matters at our volume. A single 2K edit runs about half of what the previous Seedream generation charged, and because revisions no longer force re-rolls, the retry budget shrank as well. Seedream 5.5 paid for itself in the first month on e-commerce work alone.
