---
title: "Comfyui Vs Automatic1111 — Benchmark & Workflow Comparison"
description: "ComfyUI uses 30–50% less VRAM, launches in seconds, and supports Flux, SD3.5, and Hunyuan Video natively on day one. Compare VRAM usage, Flux and video support, startup speed, and Windows installation."
canonical: https://comfy.ink/compare/comfyui-vs-automatic1111
updated: 2026-10-17
---

# ComfyUI vs Automatic1111 SD WebUI

ComfyUI uses 30–50% less VRAM, launches in seconds, and supports Flux, SD3.5, and Hunyuan Video natively on day one.

## Facts (2026-10-17)

- **Compared Against:** Automatic1111 SD WebUI
- **ComfyUI Edge:** Lower VRAM, Flux/Video support, node graph
- **Shared Models:** Yes via extra_model_paths.yaml
- **Windows Build:** Free download at /download

## ComfyUI vs Automatic1111 SD WebUI Feature Matrix

| Capability | ComfyUI (Windows) | Automatic1111 SD WebUI |
| --- | --- | --- |
| 8 GB RTX 4060 Flux support | Smooth with FP8 / GGUF | Not supported / OOM |
| Startup time on Windows | 2–4 seconds | 20–45 seconds |
| Video models (Hunyuan, Wan, LTX) | Native core nodes | Requires legacy extensions |
| Reproducibility | Drag PNG onto canvas to load full graph | Text infotext snippet only |

## How ComfyUI compares to Automatic1111 SD WebUI

ComfyUI uses 30–50% less VRAM, launches in seconds, and supports Flux, SD3.5, and Hunyuan Video natively on day one.

**Where ComfyUI pulls ahead:** Asynchronous node graph, smart model offloading, lower VRAM floor, and embedded PNG/WebP workflow metadata.

**Where Automatic1111 SD WebUI fits:** Traditional single-screen tab layout familiar to early 2023 SD 1.5 users.

## Running both tools on the same Windows PC without duplicating checkpoints

You do not need to delete Automatic1111 SD WebUI or duplicate 100 GB of `.safetensors` files to switch to ComfyUI. Configure [extra_model_paths.yaml](https://comfy.ink/install/extra-model-paths-yaml-setup) so ComfyUI reads your existing checkpoints, LoRAs, VAEs, and ControlNets directly from disk.

Install the Windows desktop or portable build from [/download](https://comfy.ink/download) and point it at your existing model library in under two minutes.

## FAQ

### Can ComfyUI and Automatic1111 SD WebUI share the same models folder on Windows?

Yes. Edit `extra_model_paths.yaml` in your ComfyUI root folder to point `base_path` at your existing models directory so both apps load the exact same files.

### Does ComfyUI use less VRAM than Automatic1111 SD WebUI?

ComfyUI only keeps the active node's sub-model (CLIP, UNet, or VAE) in VRAM at each step and supports native FP8 and GGUF quantization, making it significantly lighter on 8 GB and 12 GB GPUs.

## Related

- [ComfyUI vs Other Diffusion Tools](https://comfy.ink/compare)
- [Share Checkpoints Between ComfyUI, A1111 & Forge](https://comfy.ink/install/share-models-with-automatic1111-forge)
- [ComfyUI VRAM Requirements for SDXL, Flux & Video (6GB–24GB)](https://comfy.ink/guides/comfyui-vram-requirements-guide)
- [ComfyUI Desktop Windows Download](https://comfy.ink/desktop/comfyui-desktop-windows-download)
- [ComfyUI vs SD WebUI Forge](https://comfy.ink/compare/comfyui-vs-sd-webui-forge)

## Download

Free desktop app: [Download Comfy](https://comfy.ink/download)

Markdown mirror: https://comfy.ink/compare/comfyui-vs-automatic1111.md