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FLUX is a family of image-generation models from Black Forest Labs.
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FLUX.1 variants use rectified-flow transformer methods and have distinct licenses and capabilities; later Kontext work addresses in-context image editing.
Black Forest Labs introduced the FLUX.1 family in 2024. The official repository lists [pro], [dev], and [schnell] variants with different access and license terms. The [schnell] model card describes a 12-billion-parameter rectified-flow transformer and an Apache 2.0 license; the [dev] card lists non-commercial terms. The rectified-flow transformer paper describes separate text and image pathways with bidirectional information exchange, but it is not a full disclosure of every FLUX.1 training detail. The later FLUX.1 Kontext paper studies image generation and editing in context. Quality and text-rendering claims should be evaluated by variant and task rather than generalized across all images. The FLUX.1 [dev] model card identifies that checkpoint as a 12B rectified-flow transformer and lists non-commercial terms, with separate commercial permission required where applicable. The FLUX.1 [schnell] model card identifies latent adversarial diffusion distillation and reports 1–4 inference steps for that variant. BFL’s August 2024 launch benchmark reports typography results for FLUX.1 [pro] and [dev], scoped to that company evaluation. The official repository reference code loads T5 v1.1 XXL and CLIP ViT-L/14; do not generalize those implementation details to later FLUX variants. The FLUX.1 Kontext paper studies in-context image generation and editing and reports improved preservation of objects and characters across multiple editing turns versus the models it evaluated; that is an evaluation result, not a universal identity guarantee.
Generate a prompt-conditioned image using a documented FLUX.1 variant.
Compare text rendering and prompt adherence on the same prompt set.
Review the exact checkpoint license before commercial or hosted use.
Use a Kontext model for image editing only after checking the supported variant and workflow.
Black Forest Labs continues to release model variants and editing tools. Verify current cards and licenses for the exact checkpoint, and evaluate prompt fidelity, text rendering, and edit consistency on the intended workflow.
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FLUX is a family of image-generation models from Black Forest Labs. FLUX.1 variants use rectified-flow transformer methods and have distinct licenses and capabilities; later Kontext work addresses in-context image editing.
FLUX fue creado por Black Forest Labs, una startup fundada por antiguos desarrolladores principales de Stable Diffusion.
FLUX.1 [schnell] ('schnell' significa 'rápido' en alemán) es la versión destilada con licencia Apache-2.0 diseñada para la velocidad.
The official FLUX.1 [dev] card identifies that checkpoint as a 12B rectified-flow transformer. Architecture and sampling behavior should be scoped to a particular variant; the statement does not guarantee fewer sampling steps for every FLUX model.
BFL’s August 2024 company benchmark reported that FLUX.1 [pro] and [dev] surpassed named comparators on typography. This is a scoped company-reported result, not a universal guarantee across variants or prompts.
The Kontext paper reports improved object and character preservation across multiple turns compared with the editing models it evaluated. This is a reported comparison, not a guarantee for every subject or edit.
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