
Flux 2 Klein: BFL's small open image models, eight months after launch
Flux 2 Klein from Black Forest Labs: 4B under Apache 2.0, 9B non-commercial, images in under half a second, and how both score in blind votes today.
September 30, 20267 min read
Reviewer at Flami
3 articles

Flux 2 Klein from Black Forest Labs: 4B under Apache 2.0, 9B non-commercial, images in under half a second, and how both score in blind votes today.

GPT Image 2 on the Artificial Analysis and arena.ai leaderboards: how big its lead was, where it ranks in September 2026, and what the Elo gaps mean.

The LMArena text-to-image leaderboard as of September 2026: GPT Image 2.5 on top, where open-weight models land, and what Elo can't tell you.