Flux

Flux is the image-generation family released in August 2024 by Black Forest Labs, founded by former Stability AI researchers. It launched in three variants — Flux.1 [pro], [dev], and [schnell] — and made a clear jump over Stable Diffusion XL on text rendering, anatomy, and photorealism. The "dev" variant shipped with weights for the community and was rapidly integrated into ComfyUI workflows, while "pro" is accessed via API. It quickly became one of the most-discussed open image models of 2024.