FLUX 3 Image Klein
FLUX 3 Image Klein is the distilled checkpoint of Black Forest Labs' open-weights FLUX 3 image model, covering text-to-image generation and reference-based editing in a single model. It is built for speed without giving up quality, which suits interactive applications, rapid iteration, and high-volume production.
Prompting
How to prompt FLUX 3 Image Klein for text-to-image: writing a full scene caption, holding a layout with the seed, sizing up to 4K, and trading steps for speed.
Rendering text
How to render readable text with FLUX 3 Image Klein: quoting the exact words, controlling the text you didn't ask for, building a layout hierarchy, and editing signage.
Editing images
How to edit a photo with FLUX 3 Image Klein: scoping the change, removing objects, writing scene-wide edits as captions, reframing, and chaining edits.
Multi-reference composition
How to combine up to four references with FLUX 3 Image Klein: assigning roles, keeping a product across scenes, placing it in your own photo, and borrowing a style.
Bounding boxes
How to place, move and remove elements by region with FLUX 3 Image Klein: the 0 to 1000 grid, laying out a frame, reserving space for copy, and editing by box.