What is ComfyUI?
Open-source node-based Stable Diffusion UI, supports SDXL and SD1.x, ControlNet, LoRA, GPU acceleration, cross-platform, shareable workflows, custom nodes, batch processing, live previews.
ComfyUI: Node-based control for Stable Diffusion
What it is
ComfyUI is a visual, node-based interface for Stable Diffusion and friends. You wire samplers, models, CLIP, VAEs, ControlNets, and upscalers into a reproducible graph, run it locally, and iterate fast. It’s open-source, scriptable, and brutally explicit about what’s happening.
Why it matters
You get surgical control: schedulers, seeds, LoRA stacking, conditioning tricks, batch queuing, tiled/hi-res pipelines, and image-to-image chains—all as modular blocks. Workflows save to JSON, share cleanly, and version well. It’s not “click-generate”; it’s building a pipeline you can trust.
What you trade off
The catch: the learning curve is real. Graphs get messy, GPUs get hungry, and you’ll spend time naming nodes like an adult. Compared to A1111, it’s less cozy but far more transparent—and happier in the hands of someone who reads tooltips.
Who it’s for
Best for tinkerers, researchers, and automation nerds who want deterministic, repeatable image pipelines—not vibes. If your idea of UX is “control first,” ComfyUI feels like home.
What features and use cases does ComfyUI offer?
- Node-based visual workflow builder for Stable Diffusion pipelines (text-to-image, image-to-image, inpainting, upscaling, ControlNet, SDXL)
- Drag-and-drop graph editing with live previews and inspection of intermediate node outputs
- Save, load, and share reproducible JSON workflows for portable, versionable setups
- High-performance, VRAM-efficient execution with GPU acceleration, queuing, and batch processing
- Flexible model management: combine checkpoints, VAEs, LoRAs, samplers, and schedulers per node
- Extensible via custom nodes and community extensions to add models, tools, and utilities
- Automation and integration through headless/server mode to run workflows programmatically
- Cross-platform, open-source project with an active community ecosystem
Prices
| Pricing category | Description | Price |
|---|---|---|
| Self-hosted (open-source) | Run locally; open-source; no official paid tiers | free |
Prices may vary by region. We do not guarantee the accuracy of prices. For current information see: https://github.com/comfyanonymous/ComfyUI
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