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Image model

Seedream 4.0

ByteDance

Released
September 2025
Data date
August 15, 2026
Access
Price
Per image

Seedream 4.0 combines text-to-image generation and editing in one model. ByteDance documents text, image, and combined inputs, single- and multi-image editing, up to a dozen references, and 4K output. Identity, structure, and style can therefore change together in one scene.

ByteDance reports more than a tenfold improvement in reasoning speed over Seedream 3.0 and presents the model as officially available. Generation and editing remain connected in one workflow.

Position
Rank 25 of 30
Index score
37.7 / 100
1.Krea 2 Large75.6 / 100
2.GPT Image 274.2 / 100
5.Luma Uni-1.1 Max63.8 / 100
6.MAI-Image-2.561.8 / 100
8.Reve 2.160.1 / 100
9.Seedream 5.0 Pro57.2 / 100
11.GPT Image 2.5 Flare56.3 / 100
13.FLUX.2 Max55.8 / 100
14.Nano Banana Pro53.8 / 100
15.Nano Banana 2 Lite53.2 / 100
17.Nano Banana 251.1 / 100
18.FLUX.2 Flex49.4 / 100
19.GPT Image 1.548.3 / 100
20.Qwen Image 2.0 Pro47.7 / 100
21.FLUX.2 Pro46 / 100
23.Ideogram 4.045.4 / 100
25.Seedream 4.037.7 / 100
27.Midjourney V8.128.5 / 100
28.FLUX.2 Klein 9B24.4 / 100
29.HiDream-O1-Image19.3 / 100
Methodology and source

This position gives equal weight to 4 fixed Gradually image tests. One archived first output contributes for each model and task.