Overview

FLUX.1 was released in August 2024 by Black Forest Labs, a company founded by researchers behind the original Stable Diffusion. The [dev] version is an open-weight, guidance-distilled model for non-commercial use, alongside a faster Apache-licensed [schnell] version and commercial [pro] models via API.

Highlights

  • 12 billion parameters, rectified-flow transformer architecture
  • High prompt adherence and good rendering of text in images
  • Large community of fine-tunes and LoRA adapters
  • [schnell] variant licensed under Apache 2.0 for commercial use
  • Commercial access via API and licensing

Typical uses

High-quality image generation for creative exploration, research and fine-tuning experiments.

Things to consider

  • The [dev] weights are licensed for non-commercial use; commercial outputs and deployment need checking against the license.
  • Requires significant GPU memory; quantized versions help.
  • Black Forest Labs has released newer FLUX models since.

Specifications are taken from the provider’s official announcement, documentation or model card. Benchmark results depend on evaluation settings; see how AI benchmarks work.