FLUX.1 [dev]
FLUX.1 Dev is a 12B rectified-flow transformer for text-to-image generation. It is an earlier FLUX release with downloadable weights and a guidance-distilled training recipe.
Model details
The model generates images from descriptions and has reference implementations in Diffusers and ComfyUI. Its weight license restricts model use, while allowing generated output use under separate conditions.FLUX.1 [dev] official documentation
Practical use
Practical guidance. Use Dev when an existing workflow depends on its adapters or output style. Compare that complete workflow with newer models rather than comparing bare checkpoints. Keep model licensing separate from the rights associated with images produced by the workflow.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Access | API, Downloadable |
| Model identifiers | black-forest-labs/FLUX.1-dev |
| Weight license | FLUX.1 Dev Non-Commercial License; generated outputs can be used commercially subject to its terms.FLUX.1 [dev] official documentation |
| Hosted access | BFL documents a flux-dev image-generation endpoint.FLUX.1 Dev API reference |
Related models
- FLUX.1 [schnell]
Black Forest Labs · FLUX.1
Twelve-billion-parameter text-to-image model that generates images in one to four sampling steps.
Launch date not confirmedDownloadable - FLUX.1 Krea [dev]
Black Forest Labs · FLUX.1
Twelve-billion-parameter image generator developed with Krea for photographic aesthetics.
Launch date not confirmedDownloadable