Comfy-Org/ComfyUI

The most powerful and modular diffusion model GUI, api and backend with a graph/nodes interface.

What it solves

ComfyUI provides a modular, node-based interface for AI content creation, solving the problem of rigid, single-purpose AI tools. It allows visual professionals to maintain precise control over every model, parameter, and output when generating images, videos, 3D models, and audio.

How it works

Users build workflows using a visual node graph, connecting different AI models and processing steps without writing code. The engine handles efficient execution through asynchronous queueing, smart VRAM/RAM management, and model offloading. Workflows can be saved as JSON files or recovered from generated media, and the system can be extended via custom nodes or integrated into production pipelines via API endpoints.

Who it’s for

It is designed for visual professionals and creatives who require high-level control over their AI generation pipelines and those who want to build complex, reusable workflows for production environments.

Highlights

  • Modular Node Graph: Build and reuse complex workflows for image, video, audio, 3D, and text generation without coding.
  • Broad Model Support: Native support for state-of-the-art open-source models (e.g., Stable Diffusion, Flux, Wan, Hunyuan) and access to closed-source models via partner nodes.
  • Production Ready: Includes an "App Mode" to simplify complex workflows for end-users and a local API for application integration.
  • Hardware Flexibility: Runs locally on Windows, Linux, and macOS across various GPU types (NVIDIA, AMD, Intel, Apple Silicon) or via a paid cloud version.
  • Advanced Tooling: Built-in support for inpainting, outpainting, model merging, frame interpolation, and high bit-depth media formats (16-bit PNG, 32-bit EXR).

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