Seedream 4.5
ByteDanceProprietary
Seedream 4.5 is an AI image model from ByteDance. On LMArena’s Text-to-image leaderboard it ranks 36 of 82 with 1149±3 from 300,107 votes. On LMArena’s Image editing leaderboard it ranks 26 of 60 with 1303±2 from 1,342,849 votes. License: Proprietary.
Key figures
- Developer
- ByteDance
- License
- Proprietary
- Released (per AA)
- Dec 2025
Who it is for (from the data)
- Solid quality with room to choose: #36 of 82 on Text-to-image, in the top half.
- Generating and editing images: it is ranked on both boards.
- Use via ByteDance's service or API: LMArena lists it as proprietary.
- Existing ByteDance users: this vendor has 8 models on Text-to-image.
Neighbours on Text-to-image
| # | Model | Score | Votes | AA Elo | License | Δ |
|---|---|---|---|---|---|---|
| 33 |  Cosmos3-Super-Text2Image NVIDIA | 1152 | 18,485 | – | OpenMDW-1.1 | +3 |
| 34 |  Gemini 2.5 Flash Image Preview (Nano Banana) Google | 1150 | 890,539 | – | Proprietary | +1 |
| 35 |  Hunyuan Image 3.0 Tencent | 1150 | 180,518 | 989 | tencent-hunyuan-community | +1 |
| 36 | Seedream 4.5 ByteDance | 1149 | 300,107 | 1026 | Proprietary | |
| 37 | Imagen Ultra 4.0 Generate 001 Google | 1148 | 388,736 | – | Proprietary | -1 |
| 38 |  FLUX 2 Dev Black Forest Labs | 1146 | 77,988 | – | flux-non-commercial-license | -3 |
| 39 | Seedream 4 2K ByteDance | 1140 | 12,562 | – | Proprietary | -9 |
Alternatives · More from ByteDance
| # | Model | Score | Votes | AA Elo | License |
|---|---|---|---|---|---|
| 12 | Seedream 5.0 Pro ByteDance | 1255 | 94,181 | 1100 | Proprietary |
| 39 | Seedream 4 2K ByteDance | 1140 | 12,562 | – | Proprietary |
| 40 | Seedream 5.0 Lite ByteDance | 1138 | 129,950 | 1017 | Proprietary |
| 46 | Seedream 4 fal ByteDance | 1117 | 11,841 | – | Proprietary |
| 51 | Seedream 4 High Res fal ByteDance | 1113 | 182,685 | – | Proprietary |
Alternatives · Top open-weight models
| # | Model | Score | Votes | AA Elo | License |
|---|---|---|---|---|---|
| 19 |  Qwen Image 2.1 Alibaba | 1223 | 11,441 | 1042 | qwen-research |
| 20 |  Ideogram 4.0 Quality Ideogram | 1205 | 60,591 | – | Ideogram Open Model |
| 27 | Cosmos3-Super-Text2Image (Agentic) NVIDIA | 1165 | 10,805 | – | OpenMDW-1.1 |
| 33 | Cosmos3-Super-Text2Image NVIDIA | 1152 | 18,485 | – | OpenMDW-1.1 |
| 35 | Hunyuan Image 3.0 Tencent | 1150 | 180,518 | 989 | tencent-hunyuan-community |
How to read the scores
- LMArena score: people blind-pick the better of two anonymous images for the same prompt, and the votes are fitted into an Elo-style rating; "±" is the 95% confidence interval.
- Text-to-image and image edit are separate boards, so scores are not comparable across them; AA Elo comes from Artificial Analysis on a different scale.
- If the gap between two models is smaller than their combined intervals, the order is not statistically reliable; treat them as the same tier. More votes mean narrower intervals.
FAQ
Where does Seedream 4.5 rank among AI image models?
Text-to-image rank 36 (1149); Image editing rank 26 (1303) (LMArena, data as of Oct 26, 2026).
Is Seedream 4.5 open-weight?
No. LMArena lists it as Proprietary; it is available only through ByteDance’s products or API.
Can Seedream 4.5 edit images?
Yes. Seedream 4.5 is #26 of 60 on the LMArena image-edit board (1303, 1,342,849 votes).
Who makes Seedream 4.5?
According to LMArena, Seedream 4.5 is made by ByteDance.
How reliable is Seedream 4.5's score?
The scores are based on 300,107 votes on Text-to-image (95% CI ±3); 1,342,849 votes on Image editing (95% CI ±2). More votes and narrower intervals mean a more stable rank.
How far is Seedream 4.5 from #1 on Text-to-image?
#1 on Text-to-image is GPT Image 2.5 Sunburst (1425); Seedream 4.5 scores 1149, 276 points behind.
Sources
LMArena Text-to-image data published on Oct 7, 2026.
LMArena Image editing data published on Oct 20, 2026.
17NAS syncs the upstream leaderboards daily; this page's data was synced on Oct 26, 2026.
Price, resolution and speed have no reliable public data yet and are omitted; all values come from the snapshot, blanks show –.