Black Forest Labs image model
Flux.2 Flex AI Image Generator
The closer Flux 2 pass for product and architecture, when the composition is already set.
Prompt length 0
At a glance
- Provider
- Black Forest Labs
- Best for
- Product refinement, architecture, and tightly finished campaign images.
- Sizes
- 1K to 2K
- Reference images
- Up to 8
- Price
- 18 Credits at default settings
Character
Flux.2 Flex uses the Flux 2 surface: prompt, frame, 1K or 2K, and reference images, aimed at work that needs another degree of finish.
Flex is the deliberate sibling of Flux.2 Pro. The controls match. The pictures spend more attention on fine structure: edges of architecture, small product details, the way a material turns at a corner. Choose it when the composition is already known and the remaining question is precision.
Image to Image remains a multi-reference workflow. Show the sources, describe their roles, and ask for the finish you could not quite get on the faster pass.
Style
How Flux.2 Flex tends to see a picture.
Fine structure
Small geometry stays intentional: frames, seams, mullions, hardware.
Patient materials
Surfaces can carry subtle variation. Describe the finish, not only the substance.
Architectural calm
Spaces read as built. Camera and light should be specified as if the room exists.
Same Flux family
A Pro prompt speaks Flux here. Flex is a closer pass, not a different aesthetic.
In practice
The work this model is built to carry.
Product refinement
A known object, described more carefully.
Architecture
Interiors and facades where lines have to meet.
Campaign images
Commercial frames that need a tighter finish.
Reference edits
Several sources resolved into one precise picture.
Briefing
Bring a prompt that already works. Then add the details that were soft: joint lines, stitching, the exact finish of a stone, the fall of a shadow on a step.
Keep the scene stable between attempts. Flex is for refinement of a structure, so changing the whole concept each time throws away the reason to be here.
Refine, do not restart
Flex pays off when the previous prompt was close. Rewrite details, and keep the scene.
Describe the finish
Honed, brushed, raw, glazed, and tumbled are different pictures.
Match Pro’s references
The reference habit is the same. Give each reference a role in the prompt.
How Flux.2 Flex compares
Not sure it is the right pick? Here is when another model is the better start.
- Flux.2 Pro
Choose Flux.2 Pro for the practical Flux 2 pass before you refine.
- Flux 3 image
Choose Flux 3 image for sizes from 768SQ to 4K and up to ten references.
- Flux.1 [schnell]
Choose Flux.1 [schnell] for fast text-only composition studies.
Flux.2 Flex FAQ
Flux.2 Flex is the deliberate sibling of Flux.2 Pro, on the same Flux 2 surface. Its pictures spend more attention on fine structure: architectural edges, small product details, and the way a material turns at a corner.
When the composition is already known and the remaining question is precision. Flex pays off when the previous prompt was close, so rewrite details and keep the scene.
1K and 2K, the same size steps as Flux.2 Pro.
Bring a prompt that already works, then add the details that were soft: joint lines, stitching, the exact finish of a stone, the fall of a shadow on a step. Describe the finish too: honed, brushed, raw, glazed, and tumbled are different pictures.
The price depends on the resolution, the number of outputs, and whether you use a reference image. At default settings, Flux.2 Flex costs 18 Credits. Create always shows the exact price before you start.
Yes. Images generated while a paid kitchen is in force include commercial use, including through the end of a period you already paid for. That permission stays with those images after the kitchen ends, subject to our Terms. Images generated with starter Credits, or while no paid kitchen is in force, are for personal, non-commercial use. See Pricing.
More in the Flux family
Same family, different jobs. Pick by the work in front of you.
- Flux 3 image
Structured, material-true images from 768 square to 4K, guided by up to ten references.
- Flux.2 Pro
Crisp commercial images with convincing form, readable materials and up to 8 references.
- Flux.1 [schnell]
Sketch the composition fast, text only, then take the winner to Flux.2.
Cook with Flux.2 Flex
Create opens on this model. Write the prompt, set the frame, and keep the image on your private shelf.
Create with this modelFlux.2 Flex is a model made by Black Forest Labs. Model names and logos belong to their owners, and image.cooking is not affiliated with or endorsed by them.
Cook with something else.
Every model opens in the same workspace, with the same prompt box. Nothing to relearn when you switch.
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