Overview
ComfyUI is the most powerful node-based workflow tool in the Stable Diffusion ecosystem, officially maintained by Comfy Org and fully open source. It abstracts each step of AI image generation into independent nodes, allowing users to visually connect them into complex workflows, serving as the "control panel" for advanced AI visual creators.
Compared to WebUI / Fooocus, ComfyUI is more complex but offers a leap in flexibility—supporting Flux, SD3, SDXL, video models (Hunyuan Video / LTX / Wan2.1), multi-LoRA, ControlNet, IPAdapter, AnimateDiff, and virtually all advanced techniques. Community workflow JSONs can be imported with one click for reproduction, fostering a thriving ecosystem.
Official Desktop Client and Cloud Service: Comfy Org has launched Comfy Desktop (desktop client) and Comfy Cloud (cloud service), eliminating the need for manual environment setup—download and use immediately. Additionally, the new MCP feature allows integration of ComfyUI into AI agents; App Mode provides a simplified view, lowering the entry barrier for beginners.
The model lineup keeps expanding. On 2026-09-20, Qwen-Image-2.1 became available in ComfyUI with open weights for download: a single 7B checkpoint handles both image generation and editing, generates natively at 2K, accepts instruction edits based on up to 10 reference images at a time, and outputs RGBA images with an alpha channel. On 2026-08-12, LTX-2.5 arrived with native ComfyUI integration, generating a 10-second 720P video in just 6.8 seconds on a configuration of 2 NVIDIA GB200s; LTX-2.5 Fast generates 720p videos with audio at $0.09 per second, costing $0.90 for a 10-second clip, and organizations with annual recurring revenue below $10 million can use it for free.
Key Features
- Node-Based Visual Workflow: Each operation is broken into nodes, freely connected to form complex generation pipelines, with App Mode for a simplified view
- Full Multi-Model Coverage: Full support for open-source models including SD1.5/SDXL/SD3/Flux 2/video models (Hunyuan Video, LTX, Wan2.1), plus Qwen-Image-2.1 and LTX-2.5
- Shareable Workflow JSON: Community workflows can be imported with one click for reproduction; thousands of community templates available
- LoRA / ControlNet / IPAdapter: Complete integration of advanced fine-control capabilities
- Official Desktop Client and Cloud Service: Comfy Desktop offers a local desktop experience; Comfy Cloud supports cloud-based operation without manual environment setup
- MCP Feature and App Mode: MCP enables integration of ComfyUI into AI agents; App Mode provides a simplified view suitable for beginners
- ComfyUI Manager Ecosystem: Rich custom node packages, the most active in the SD community; Manager v3 makes node management easier
- Qwen-Image-2.1 Support: A single 7B checkpoint handles both image generation and editing, generates natively at 2K, accepts instruction edits based on up to 10 reference images at a time, and outputs RGBA images with an alpha channel; open weights available for download (2026-09-20)
- LTX-2.5 Native Integration: Generates a 10-second 720P video in just 6.8 seconds on a configuration of 2 NVIDIA GB200s; LTX-2.5 Fast generates 720p videos with audio at $0.09 per second (2026-08-12)
Use Cases
- Advanced AI image creators seeking fine-grained control
- AnimateDiff / LTX / Wan2.1 video generation workflows
- Commercial image production requiring reproducible pipelines
- Batch automated image generation
- AI art education and research
- Integrating AI visual capabilities into intelligent agents (MCP)
- Instruction-based image editing with Qwen-Image-2.1
- Fast 720P video generation with LTX-2.5
Pros
- Highest flexibility in the industry
- Completely open source and free
- Rich community workflows
- Support for cutting-edge open-source models (Flux 2/SD3.5/video)
- Full data control with local deployment
- Official desktop client and cloud service lower the usage barrier
- Qwen-Image-2.1 and LTX-2.5 expand image editing and video generation capabilities
Pricing
ComfyUI itself is completely open source and free. Comfy Cloud cloud service charges based on GPU usage time; please refer to the official website for specific pricing. Third-party cloud hosting platforms (e.g., RunComfy, ThinkDiffusion) charge by GPU usage time, approximately $0.5-$2/hour. LTX-2.5 Fast generates 720p videos with audio at $0.09 per second, costing $0.90 for a 10-second clip; organizations with annual recurring revenue below $10 million can use it for free.
Summary
ComfyUI is the ultimate tool for advanced AI visual creators—leading the industry in flexibility, openness, and community, though with a higher entry barrier for beginners. The launch of the official desktop client, cloud service, App Mode, and MCP feature makes it more accessible and powerful, and the model ecosystem continues to grow with Qwen-Image-2.1 (2026-09-20) and LTX-2.5 (2026-08-12) now supported. For daily image generation, choose Midjourney / GPT-Image-2; for serious creation and commercial pipelines, choose ComfyUI.
Version History
- ComfyUI launches NVIDIA VFX nodes, supporting video super-resolution, frame interpolation, and SDR to HDR conversion. (2026-10-13): NVIDIA's RTX video effects model arrives in ComfyUI as a custom node, distributed with the node and running locally on RTX GPUs.
- Qwen-Image-2.1 now works in ComfyUI with open weights available for download (2026-09-20): Qwen announced that Qwen-Image-2.1 is now available in ComfyUI, with model weights open for download. A single 7B checkpoint handles both image generation and editing, generates natively at 2K, accepts instruction edits based on up to 10 reference images at a time, and outputs RGBA images with an alpha channel.
- LTX-2.5 arrives: AI generates a 10-second 720P video in just 6.8 seconds, with native ComfyUI integration (2026-08-12): LTX launches the LTX-2.5 model with native ComfyUI integration, generating a 10-second 720P video in just 6.8 seconds on a configuration of 2 NVIDIA GB200s. LTX-2.5 Fast generates 720p videos with audio at $0.09 per second, costing $0.90 for a 10-second clip; organizations with annual recurring revenue below $10 million can use it for free.
- ComfyUI Desktop / Cloud (2025-2026): Launched official desktop client and cloud service; native support for latest models including FLUX 2, SD3.5, Hunyuan Video, LTX, Wan2.1; added MCP feature, App Mode simplified view, workflow manager + Manager v3
- ComfyUI v1 (Official Version) (2024): First official version released after Comfy Org was established, standardizing workflow format and stabilizing node API
- ComfyUI Early Community Version (2023): Open-source node-based SD inference framework by comfyanonymous, gradually becoming the top choice for advanced users