FLUX.2 Klein 9B vs Seedream v4.5

We ran both models through 10 prompts and measured the results. Below you'll find the actual outputs, generation times, and our notes on each.

Quick Verdict
10 prompts tested Jan 2026
FLUX.2 Klein 9B Faster generation
Seedream v4.5 Better photorealism, Better text rendering
Winner Score 3-7 (Seedream)
Avg Speed FLUX.2 Klein: 1.5s
Avg Speed Seedream: 15.9s
Best at Text Seedream
Best at Photos Seedream

Specs

What each model can do.

Feature FLUX.2 Klein 9B Seedream v4.5
Text-to-Image Yes Yes
Image-to-Image Yes Yes
Max Resolution 1K (1024×1024) 4K (4096×4096)
Average Speed 1.5s 15.9s
Cost via fal.ai
$0.011
per megapixel
$0.04
per image
Architecture Diffusion (Klein) Diffusion
Providers fal.ai fal.ai

Use both models in VM Studio

Install VM Studio and compare FLUX.2 Klein 9B vs Seedream v4.5 on your own prompts.

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