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Tools · Comparison

Upscayl vs Stable Diffusion

Both are image generation tools. Here is what separates them.

UpscaylStable Diffusion
What it isThe #1 Free and Open Source AI Image Upscaler for Linux, MacOS and Windows. Upscayl uses the power of AI to upscale your images with the best quality possible.Stability AI is the enterprise-ready creative partner for teams and creators, delivering professional-grade generative AI tools and solutions for content production at scale.
CategoryImage GenerationImage Generation
PricingPaid · $40/moFree · Free (self-hosted)
How it billsFlat monthlyFree
Free tierNoYes
RatingNot yet rated4.4 from 5,200 reviews
Features—
  • Open-source model
  • Local execution
  • LoRA fine-tuning
  • ControlNet support
  • ComfyUI workflows
  • Inpainting & outpainting
  • Model merging
  • Community models
What works
  • Publishes its price openly — $40/mo
  • Sits in Image Generation, one of the better-covered categories here — easy to compare
  • Completely free to use
  • Full customization
  • No content restrictions
  • Large community
  • Runs locally
What does not
  • No free tier — it has to be paid for before it can be tried
  • 133 other tools in this catalogue claim to do the same job
  • 48 tools in the same category have a free tier
  • Requires GPU hardware
  • Complex setup
  • Steeper learning curve
  • Quality varies by model

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