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ComfyUI

Node-based workflow editor for AI image generation — Stable Diffusion power tool.

Visit ComfyUI Free (open source)

What is ComfyUI?

ComfyUI is the open-source node-based interface for running Stable Diffusion, Flux, and other open image models. Connect nodes to build complex generation workflows — txt2img → upscale → inpaint → ControlNet — and save them as reusable templates.

Key features

  • Node-based visual workflow
  • Runs Stable Diffusion, Flux, HunyuanImage locally
  • ControlNet + LoRA + IP-Adapter support
  • 10,000+ community workflows
  • Runs on consumer GPUs

Pros

  • Most powerful local AI image tool
  • Active OSS community
  • Free — no API fees, runs on your GPU

Cons

  • Steep learning curve
  • Requires a capable GPU (8GB+ VRAM)
  • Documentation is community-scattered

Best for

AI artists who want full controlDevelopers building image pipelinesPrivacy-conscious creatorsAnyone tired of API costs

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