ByteDance · Image model

Seedream 4.5.

Seedream 4.5 is the latest in-house image generation model developed by ByteDance. Compared with Seedream 4.0, it delivers comprehensive improvements, especially in editing consistency, including better preservation of subject details,...

Arena quality

1170 Elo

#30 of 146

Preference samples

12,990

95% confidence ±7

Price

$40

Per 1,000 images at the evaluated setting

Reference images

14

Images accepted as visual guidance

What this means.

People compared this model’s images directly with competing models. It placed #30, based on 12,990 preference samples. The result applies to the default evaluated setting.

Practical specifications.

Resolutions
1K, 2K, 4K
Aspect ratios
1:1, 1:2, 2:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 9:19.5, 19.5:9, 9:20, 20:9, 9:21, 21:9, auto
Quality settings
Seed control
Yes
Transparent/background control
No

See where Seedream 4.5 stands.

ModelCompanyQualityEvidence
GPT Image 2OpenAI100Both workflows / exact match
MAI-Image-2.5Microsoft99Both workflows / exact match
Nano Banana 2 (Gemini 3.1 Flash Image Preview)Google98Both workflows / exact match
Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image)Google97Both workflows / exact match
Nano Banana Pro (Gemini 3 Pro Image)Google94Both workflows / exact match
Recraft V4.1 UtilityRecraft92Both workflows / exact match
Grok Imagine Image QualityxAI92Both workflows / exact match
FLUX.2 MaxBlack Forest Labs90Both workflows / exact match
Recraft V4.1 Utility ProRecraft91Both workflows / exact match
Krea 2 MediumKrea88Both workflows / exact match
Krea 2 LargeKrea89Both workflows / exact match
Krea 2 Medium TurboKrea86Both workflows / exact match