Stable Diffusion 3.5 Medium vs FLUX 2 Dev

Compare Stable Diffusion 3.5 Medium by Stability AI against FLUX 2 Dev by Black Forest Labs, in 3 community votes, flux 2 dev wins 100% of head-to-head duels, tested across 17 shared challenges. Updated February 2026.

In 3 community votes, FLUX 2 Dev wins 100% of head-to-head duels. FLUX 2 Dev leads in Image Generation. Based on blind community voting from the RIVAL open dataset of 3+ human preference judgments for this pair.