Stable Diffusion 3.5 Medium
Stable Diffusion 3.5 Medium vs FLUX 2 Flex
Compare Stable Diffusion 3.5 Medium by Stability AI against FLUX 2 Flex by Black Forest Labs, tested across 17 shared challenges. Updated February 2026.
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Stable Diffusion 3.5 MediumvsFLUX 2 Flex
17 challenges
Why Stable Diffusion 3.5 Medium?
No standout advantages
Why FLUX 2 Flex?
13 months newerNov 2025
12 / 17
Hyperrealistic Portraitimage generation
Tests an AI's ability to generate a photorealistic human portrait
FLUX 2 Flex
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2 / 17
Futuristic Cityimage generation
Tests an AI's ability to create detailed architectural visualizations
Stable Diffusion 3.5 Medium
FLUX 2 Flex
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3 / 17
Fantasy Character Designimage generation
Tests an AI's capability to design fantasy characters with specific details
Stable Diffusion 3.5 Medium
FLUX 2 Flex
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4 / 17
Product Visualizationimage generation
Tests an AI's ability to create a marketing-ready product image
Stable Diffusion 3.5 Medium
FLUX 2 Flex
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5 / 17
Illustrated Sceneimage generation
Tests an AI's ability to generate a stylized illustration
Stable Diffusion 3.5 Medium
FLUX 2 Flex
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6 / 17
Corkboard Outfit Collageimage generation
Tests an AI's ability to create convincing mixed-media collages and product presentation
Stable Diffusion 3.5 Medium
FLUX 2 Flex
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7 / 17
Architectural Blueprint Sheetimage generation
Tests an AI's ability to render technical drawings with clean linework, scale, and legible annotations
Stable Diffusion 3.5 Medium
No content available for this output.
FLUX 2 Flex
No content available for this output.
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8 / 17
Fluid Dynamics Explainerimage generation
Tests an AI's ability to create a clear, diagrammatic scientific illustration with explanatory structure
Stable Diffusion 3.5 Medium
No content available for this output.
FLUX 2 Flex
No content available for this output.
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9 / 17
Isometric Cutaway Homeimage generation
Tests spatial reasoning, perspective consistency, and detailed environment rendering
Stable Diffusion 3.5 Medium
No content available for this output.
FLUX 2 Flex
No content available for this output.
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10 / 17
Packaging Shelf Mockupimage generation
Tests branding, packaging design, and photoreal retail context rendering
Stable Diffusion 3.5 Medium
No content available for this output.
FLUX 2 Flex
No content available for this output.
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11 / 17
Botanical Scientific Plateimage generation
Tests fine detail, consistent linework, and vintage scientific illustration style
Stable Diffusion 3.5 Medium
No content available for this output.
FLUX 2 Flex
No content available for this output.
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12 / 17
Imaginary Transit Mapimage generation
Tests graphic design, layout, and typography accuracy in a schematic map
Stable Diffusion 3.5 Medium
No content available for this output.
FLUX 2 Flex
No content available for this output.
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12 of 17