Review of Flux by Black Forest Labs
Flux is Black Forest Labs' family of image generation models. The team includes the original creators of Stable Diffusion. Flux comes in three sizes: Schnell (fast), Dev (balanced), and Pro (premium). The open-source versions are competitive with closed models like Midjourney v6 and DALL-E 3.
Quality is competitive with closed models. Flux Pro generates images on par with Midjourney v6 and DALL-E 3. The open-source Dev model is close behind.
Open weights for some versions. Flux Schnell (Apache 2.0) and Flux Dev (non-commercial) are open. You can self-host, fine-tune, and inspect.
Fast generation. Flux Schnell generates images in 1-3 seconds. The closed models take 10-20 seconds. Great for iteration.
Excellent prompt following. Flux handles complex prompts better than most open models. Long descriptions, multiple subjects, specific styles — it gets them right.
Text rendering is better than Midjourney. Flux can render text in images accurately. Not as good as GPT-4o, but better than Midjourney v6.
Flux Pro is API-only. The best model is closed. You pay per image, and the pricing is similar to DALL-E 3.
Flux Dev has license restrictions. The Dev model is for non-commercial use. You need to negotiate a commercial license for production use.
Less polish than Midjourney. Flux's community and ecosystem are smaller. Fewer tutorials, fewer preset styles, less hand-holding.
No built-in editor. No inpainting, outpainting, or editing tools like Adobe Firefly or Midjourney. You need a separate tool for edits.
Flux Schnell: free, open-source. Flux Dev: free for non-commercial, license for commercial. Flux Pro: $0.05 per image via API. Enterprise: custom.
Developers who want open-source image generation, companies with privacy requirements, anyone who needs to self-host. The best open image model in 2026.
★ 4.5/5. The best open-source image model. Worth the API cost for Flux Pro if you need commercial use.
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