FLUX 2 Flex
FLUX 2 Flex vs Stable Diffusion 3.5 Medium
Compare FLUX 2 Flex by Black Forest Labs against Stable Diffusion 3.5 Medium by Stability AI, tested across 17 shared challenges. Updated February 2026.
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FLUX 2 FlexvsStable Diffusion 3.5 Medium
17 challenges
Why FLUX 2 Flex?
13 months newerNov 2025
Why Stable Diffusion 3.5 Medium?
No standout advantages
12 / 17
Hyperrealistic Portraitimage generation
Tests an AI's ability to generate a photorealistic human portrait
Stable Diffusion 3.5 Medium
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2 / 17
Futuristic Cityimage generation
Tests an AI's ability to create detailed architectural visualizations
FLUX 2 Flex
Stable Diffusion 3.5 Medium
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3 / 17
Fantasy Character Designimage generation
Tests an AI's capability to design fantasy characters with specific details
FLUX 2 Flex
Stable Diffusion 3.5 Medium
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4 / 17
Product Visualizationimage generation
Tests an AI's ability to create a marketing-ready product image
FLUX 2 Flex
Stable Diffusion 3.5 Medium
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5 / 17
Illustrated Sceneimage generation
Tests an AI's ability to generate a stylized illustration
FLUX 2 Flex
Stable Diffusion 3.5 Medium
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6 / 17
Corkboard Outfit Collageimage generation
Tests an AI's ability to create convincing mixed-media collages and product presentation
FLUX 2 Flex
Stable Diffusion 3.5 Medium
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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
FLUX 2 Flex
No content available for this output.
Stable Diffusion 3.5 Medium
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
FLUX 2 Flex
No content available for this output.
Stable Diffusion 3.5 Medium
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
FLUX 2 Flex
No content available for this output.
Stable Diffusion 3.5 Medium
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
FLUX 2 Flex
No content available for this output.
Stable Diffusion 3.5 Medium
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
FLUX 2 Flex
No content available for this output.
Stable Diffusion 3.5 Medium
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
FLUX 2 Flex
No content available for this output.
Stable Diffusion 3.5 Medium
No content available for this output.
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12 of 17