Why it matters

FLUX is leading open image model. Understanding shapes current state.

Advertisement

The architecture

Rectified flow: smoother path than diffusion.

MMDiT: multimodal DiT combines text + image tokens.

FLUX architectureRectified flowstraight pathsMMDiT transformertext + image tokensDecodeto image12B params base; FLUX.1-schnell distilled to 1-4 steps
FLUX.
Advertisement

How it works end to end

Rectified flow: fewer sampling steps.

MMDiT: joint text + image attention.

Variants: dev, schnell (distilled), pro (API).