FLUX

FLUX comes from Black Forest Labs, a team founded by former Stable Diffusion researchers, and it's become the default open-weight option for people who want Midjourney-level image quality without depending on a closed API — noticeably better hands and text rendering than earlier open models, with strong prompt adherence. Developers self-host it, fine-tune it on custom styles, or run it through hosted endpoints on platforms like Replicate and Hugging Face, and it's also become a common base model that other companies build their own image products on top of.