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Comparison of Black Forest Labs: FLUX.2 Klein 4B, Black Forest Labs: FLUX 3 Image
2 modelsblack-forest-labsBlack Forest Labs: FLUX.2 Klein 4BRemove ×black-forest-labsBlack Forest Labs: FLUX 3 ImageRemove ×
What’s differentFLUX.2 [klein] 4B is the fastest and most cost-effective model in the FLUX.2 family, optimized for high-throughput use cases while maintaining excellent image quality. Pricing is based on the output...FLUX.3 Image is Black Forest Labs' flagship image generation and editing model. It handles text-to-image and multi-reference editing with up to 10 input images, and renders at fixed resolution tiers...
DateJan 14, 2026ListedOct 1, 2026Released
Listed rateSee provider quotes$0.041/ imageBlack Forest Labs · via OpenRouter · all routes ↗black-forest-labs · output image · variant=768
Provider endpoints0 endpoints →2 endpoints →
AA Image ↗2.1Not reported1,117.15 ↗Text-to-image · all categoriesIndependent result95% CI 1,105.15–1,129.15 · n=6,115
Context window41K46.9K
Max output36.9K42.2K
Parameters4B—
Image inputSupportedSupported
Open weightsSupportedNot reported

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