Black Forest LabsFLUX.1 Fill [pro]VSBlack Forest LabsFLUX.2 [flex]
Our Take
This matchup presents a clear distinction between specialized image editing and foundation generation. FLUX.1 Fill [pro] is a purpose-built model featuring dedicated specializations in Inpainting (Mask Fill) & Outpainting (Canvas Expansion) via a fast cloud API ($0.050/img). Meanwhile, FLUX.2 [flex] is engineered as a general foundation model. Choose FLUX.1 Fill [pro] if your workflow requires mask editing, fill tasks, or canvas expansion, or FLUX.2 [flex] for general image creation.
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Model Specs
FLUX.1 Fill [pro]
Pricing & Speed
Cost per Generation
$50.00per 1,000 imagesSpeed Tier
fastMax Resolution2K
Model Strengths
RealismHIGHPrompt AdherenceHIGHeditingHIGHoutput-qualityHIGHCharacter ConsistencyHIGHText RenderingHIGH
Model Specs
FLUX.2 [flex]
Pricing & Speed
Cost per Generation
$50.00per 1,000 imagesSpeed Tier
fastMax Resolution2K
Model Strengths
RealismMEDIUMPrompt AdherenceHIGHeditingHIGHoutput-qualityMEDIUMCharacter ConsistencyMEDIUM-HIGHText RenderingHIGH
Frequently Asked Questions about FLUX.1 Fill [pro] vs FLUX.2 [flex]
Both models cost the same, costing $0.0500 per image generation.
Both models generate images in the fast speed tier.
•FLUX.1 Fill [pro] is stronger in: Realism (High vs Medium), Output Quality (High vs Medium), Character Consistency (High vs Medium-High).
•Both models perform equally in: Prompt Adherence (both are High), Editing (both are High), Text Rendering (both are High).
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