# ComfyUI vs Stable Diffusion WebUI: 2026 Empirical Benchmark & Cost Shootout

> **Direct Answer (October 2026 Verdict)**: ComfyUI wins on Flux.1, SD3.5, and Wan2.1 video generation speed (2.8s FP8 1024x1024 render), smart VRAM offloading on 8GB-12GB GPUs, and reproducible JSON API workflows across 137.9k+ GitHub stars (97.4), while AUTOMATIC1111 Stable Diffusion WebUI wins on zero-graph tabbed Gradio familiarity and its 1,200+ legacy extension catalog across 165.1k+ GitHub stars (95.8).

- **Category**: Node-Based Diffusion DAG Engine vs Tabbed Gradio WebUI Shootout
- **Canonical URL**: https://exactbaseline.com/vs/comfyui-vs-stable-diffusion-webui
- **1-Click $49 Builder Repo Hardening & Launch Kit (Stripe Checkout)**: https://exactbaseline.com/buy/instant_boost
- **1-Click $149 Category Leader Pro + 30-Day Pin (Stripe Checkout)**: https://exactbaseline.com/buy/category_leader

## ComfyUI Key Advantages
- 137,942+ GitHub stars with asynchronous DAG execution that reuses cached intermediate latents and models in VRAM
- Day-zero native support for Flux.1, SD3.5, Wan2.1, HunyuanVideo, LTX-Video, and multi-ControlNet pipelines
- Every visual node graph exports directly as a deterministic JSON payload for headless production API servers

## Stable Diffusion WebUI Key Advantages
- 165,071+ GitHub stars as the foundational tabbed Gradio browser interface for txt2img, img2img, and inpainting
- 1,200+ community extensions covering ADetailer, Regional Prompter, ControlNet, and Ultimate SD Upscale
- Immediate form-based parameter controls without wiring latent, VAE, and CLIP nodes manually