open weights — A model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.
distillation — Training a small, cheap model to imitate a big one's outputs, keeping much of the capability at a fraction of the cost.
Why it matters
The original FLUX.1 release established the pro/dev/schnell split that still shapes open weightsA model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.Full definition → image tooling: a distillationTraining a small, cheap model to imitate a big one's outputs, keeping much of the capability at a fraction of the cost.Full definition → fast variant, a non-commercial open checkpoint, and an API-only flagship.