Seedream 4.0 (2K)
ByteDanceProprietary
Seedream 4.0 (2K) is an AI image model from ByteDance. It is not on LMArena’s Text-to-image leaderboard yet. On LMArena’s Image editing leaderboard it ranks 33 of 60 with 1267±7 from 210,030 votes. License: Proprietary.
Key figures
- Developer
- ByteDance
- License
- Proprietary
Not yet available: Released (per AA), LMArena · Text-to-image, AA Elo
Who it is for (from the data)
- When quality is not the top priority: #33 of 60 on Image editing, in the bottom half; if quality matters most, check higher-ranked models first.
- Mainly image editing: no text-to-image results yet.
- Use via ByteDance's service or API: LMArena lists it as proprietary.
- Existing ByteDance users: this vendor has 8 models on Image editing.
Neighbours on Image editing
| # | Model | Score | Votes | AA Elo | License | Δ |
|---|---|---|---|---|---|---|
| 30 |  Wan 2.7 Image Alibaba | 1301 | 44,788 | – | Proprietary | +34 |
| 31 | Seedream 5.0 Lite ByteDance | 1295 | 485,179 | 1062 | Proprietary | +28 |
| 32 |  Gemini 2.5 Flash Image Preview (nano-banana) Google | 1291 | 11,430,191 | – | Proprietary | +24 |
| 33 | Seedream 4.0 (2K) ByteDance | 1267 | 210,030 | – | Proprietary | |
| 34 |  FLUX.2 [max] Black Forest Labs | 1261 | 375,802 | – | Proprietary | -6 |
| 35 |  Reve v1.1 Reve | 1261 | 672,619 | – | Proprietary | -6 |
| 36 |  Kling Image O1 Kling (Kuaishou) | 1250 | 143,646 | 944 | Proprietary | -17 |
Alternatives · More from ByteDance
| # | Model | Score | Votes | AA Elo | License |
|---|---|---|---|---|---|
| 11 | Seedream 5.0 Pro ByteDance | 1391 | 307,763 | 1131 | Proprietary |
| 26 | Seedream 4.5 ByteDance | 1303 | 1,342,849 | 1043 | Proprietary |
| 31 | Seedream 5.0 Lite ByteDance | 1295 | 485,179 | 1062 | Proprietary |
| 45 | Seedream 4.0 (High Res, fal) ByteDance | 1216 | 1,229,694 | – | Proprietary |
| 46 | Seedream 4.0 (fal) ByteDance | 1210 | 152,100 | – | Proprietary |
Alternatives · Top open-weight models
| # | Model | Score | Votes | AA Elo | License |
|---|---|---|---|---|---|
| 19 | Qwen-Image-2.1 Alibaba | 1362 | 36,713 | 1081 | qwen-research |
| 29 |  HunyuanImage 3.0 Instruct Tencent | 1302 | 331,438 | 1063 | tencent-hunyuan-community |
| 38 | Qwen-Image-Edit Alibaba | 1241 | 2,021,780 | – | Apache 2.0 |
| 40 | Qwen-Image-Edit (2511) Alibaba | 1233 | 485,092 | – | Apache 2.0 |
| 43 | FLUX.2 [klein] 9B Black Forest Labs | 1224 | 540,679 | 1015 | flux-non-commercial-license |
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 4.0 (2K) rank among AI image models?
Image editing rank 33 (1267) (LMArena, data as of Oct 26, 2026).
Is Seedream 4.0 (2K) open-weight?
No. LMArena lists it as Proprietary; it is available only through ByteDance’s products or API.
Who makes Seedream 4.0 (2K)?
According to LMArena, Seedream 4.0 (2K) is made by ByteDance.
How reliable is Seedream 4.0 (2K)'s score?
The scores are based on 210,030 votes on Image editing (95% CI ±7). More votes and narrower intervals mean a more stable rank.
How far is Seedream 4.0 (2K) from #1 on Image editing?
#1 on Image editing is GPT-Image-2.5 Sunburst (1514); Seedream 4.0 (2K) scores 1267, 247 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 –.