FLUX.3 Image Klein
Black Forest Labs FLUX.3 Image Klein generates images with precise layout, style, and typography, or edits and composes up to ten references. Supports object placement, movement, removal, style transfer, and text editing. Optional labeled bounding boxes control the layout. Five square output sizes from 768px to 4K.
Added Oct 15, 2026
Details
- Approx. Price
- $0.009 per image
- Model type
- both
Settings
Generation controls available for this model.
Images Per Run
Up to 4
Output images
Input Images
Up to 10
Reference/edit images accepted • Route max 30 MB
Output Sizes
Layout boxes (JSON)
Default
N/A
JSON array of up to 32 objects. Each needs description; optional label and box: {x_min,y_min,x_max,y_max}. Editing also supports source_image_index (zero-based), source_box and target_box. Coordinates are fractions from 0 to 1. Reference labels in the prompt as <label>.
Number of Images
Default
1
Output format
Default
png
Options (3)
PNG, JPEG, WEBP
Prompt expansion
Default
Yes
Resolution
Default
1024x1024
Options (5)
768x768, 1024x1024, 1536x1536, 2048x2048 +1 more
Safety checker
Default
Yes
Seed
Default
N/A
Benchmarks
No public benchmark scores for this model yet.
Examples
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