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FLUX (Black Forest Labs) vs Stable Diffusion 3.5 comparison

Compare FLUX (Black Forest Labs) and Stable Diffusion 3.5 in Image item by item — price, plans, specs, Korean support, and commercial-use availability. In the table below, use Show differences only to filter to just the differing rows.

An image model strong on realism and technical control

A family of high-quality image-generation models from Black Forest Labs, strong at photorealistic rendering and fine-grained control. Available via a playground and API.

Edge vs. similar tools: It pairs frontier-grade quality with fast inference, fine-grained control, and open-weight options.

The leading open image model you can self-host

An open-weight image generation model released by Stability AI that runs even on consumer GPUs and can be freely customized.

Edge vs. similar tools: Released with open weights, it allows free self-hosting and fine-tuning and is backed by a massive community ecosystem.

Item-by-item comparison

FLUX (Black Forest Labs)40

Pricing

Free plan
Yes
Cheapest paid
Free
Plans
2

Specs

Max resolution
-
Output formats
PNG, JPG
Watermark
None

Cross-cutting

Korean
Supported
API
Yes
Commercial use
Limited
Stable Diffusion 3.549

Pricing

Free plan
Yes
Cheapest paid
Free
Plans
2

Specs

Max resolution
1024x1024
Output formats
PNG, JPG
Watermark
None

Cross-cutting

Korean
Not supported
API
Yes
Commercial use
Limited

FLUX (Black Forest Labs) vs Stable Diffusion 3.5: which should you choose?

  • FLUX (Black Forest Labs) and Stable Diffusion 3.5 can be started for free, so you can see the results first without signing up.
  • Stable Diffusion 3.5 has the higher popularity score (FLUX (Black Forest Labs) 40 vs Stable Diffusion 3.5 49), so it has stronger public awareness signals in this category.
  • If a Korean environment matters, FLUX (Black Forest Labs) has the edge (Korean I/O).

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