FLUX.1 Fill [dev]
FLUX.1 Fill Dev is a 12B model that generates content inside a selected region of an existing image. A text prompt guides the replacement while the surrounding image supplies context.
Model details
The model accepts an image and mask and uses guidance distillation. Its purpose is localized filling rather than rebuilding a whole image from a reference. The separate hosted Fill Pro service is also documented.FLUX.1 Fill [dev] official documentation
Practical use
Practical guidance. Use a mask that includes the complete object and any shadow or reflection that must change. Inspect the boundary at full resolution. A good-looking replacement can still leave an inconsistent edge or lighting cue that reveals the edit.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Access | Downloadable |
| Model identifiers | black-forest-labs/FLUX.1-Fill-dev |
| Weight license | FLUX.1 Dev Non-Commercial License; generated outputs can be used commercially subject to its terms.FLUX.1 Fill [dev] official documentation |
Related models
- FLUX.1 Fill [pro]
Black Forest Labs · FLUX.1
Hosted inpainting model that fills a masked image area from a text prompt.
Launch date not confirmedAPI · Provider product