FLUX.1 Fill [pro]
FLUX.1 Fill Pro is a hosted inpainting model that fills a masked area of an input image from a text prompt.
Model details
The mask can be provided separately or through the input alpha channel. The API exposes sampling steps, guidance and prompt upsampling. This is a dedicated masked-edit route, distinct from general Kontext instruction editing.FLUX.1 Fill [pro] official documentation
Practical use
Practical guidance. Use Fill when an application already has an exact selection mask. Review the edit boundary and the object's interaction with nearby surfaces. Specify the replacement clearly without asking the model to change unrelated parts of the image.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Access | API, Provider product |
| Model identifiers | flux-pro-1.0-fill |
| Access terms | Proprietary hosted API; no public weights for this variant verified.FLUX.1 Fill [pro] official documentation |
Related models
- FLUX Outpainting
Black Forest Labs · FLUX Tools
Image outpainting model with controls for canvas dimensions and source-image placement.
Launch date not confirmedAPI - FLUX.1 Fill [dev]
Black Forest Labs · FLUX.1
Twelve-billion-parameter inpainting model that fills selected image regions using text and surrounding context.
Launch date not confirmedDownloadable