📖 The AI Tool Bible

Flux vs Stable Diffusion

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

 
Flux
Image Generation
Stable Diffusion
Image Generation
TaglineBlack Forest Labs' open-weights image model — rivals Midjourney quality.Open-source image generation — run anywhere, fine-tune anything.
CategoryImage GenerationImage Generation
PricingFreemium· API per-image; weights free for [schnell] and [dev]Free
ModelFlux.1SD 3.5 / SDXL
Editorial score9.0 / 108.8 / 10
Use cases
open sourceself-hostedhigh quality
localfine-tuningopen sourceControlNet
Pros
  • Open weights for [schnell]/[dev] variants
  • Quality rivals Midjourney
  • Excellent prompt adherence
  • Fully open weights
  • Run locally
  • Massive ecosystem (LoRAs, ControlNet)
Cons
  • [pro] is API-only
  • Self-hosting needs serious GPU
  • Setup is technical
  • Default quality below Midjourney
Websiteblackforestlabs.aistability.ai
Pick Flux if
  • ✅ Open weights for [schnell]/[dev] variants
  • ✅ Quality rivals Midjourney
  • ✅ Excellent prompt adherence
Pick Stable Diffusion if
  • ✅ Fully open weights
  • ✅ Run locally
  • ✅ Massive ecosystem (LoRAs, ControlNet)
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