【2026 Guide】How to Use ComfyUI

The setup ritual is over. Complete evolution as a "Video Gen OS" and survival tactics for the RTX 5090 era.

Last Updated: Feb 4, 2026

🔰 The old "Frustration Points" are gone

No need for Git commands or Python version management. 2026's ComfyUI (Desktop V1) has evolved into a "normal app" where you just double-click the installer and the Python 3.13 and CUDA 13.0 environment is automatically set up.

🏭 Farewell to WebUI, Hello "OS"

The Revolution of Desktop V1 (Core v0.11.x)

It has an isolated Python environment inside the app, so it doesn't pollute your PC environment.

Also, extension (node) management has evolved from Git to "Registry (CNR)", drastically reducing accidents where "updating broke everything".

Feature WebUI (A1111/Forge) ComfyUI (Desktop V1)
Role Vending Machine (Buy finished product) Factory Line (Design the process)
Video Gen Weak (Sora-level is impossible) Strong (Supports Wan 2.6 / LTXV 2)
Extensibility Plugin dependent Infinite (Paper implementations usable same-day)

🎥 Video Gen Supremacy: From Flux to Sora-class Models

Flux.1 / Flux.2

High-quality models that made the legacy SDXL a thing of the past. Specifically in text rendering and detailed pose control via ControlNet, it offers more flexible control than WebUI.

Wan 2.6 / LTXV 2

"From Still to Video". The workflow of loading a generated character as a reference and turning it into a video while maintaining consistency can currently only be achieved with ComfyUI.

⚠️ Security and Hardware Walls

Stricter Security

Following attack incidents in 2025, security standards have been tightened. Unsigned "wild nodes" cannot be installed by default.

Safety has improved, but the freedom to casually try experimental code is being lost.

The "Human Rights" Line for Specs

The recommended line for running video models at full resolution. Even the RTX 4090 is borderline. You are faced with the choice: "Buy an RTX 5090 or give up and use Cloud APIs."

☁️ Hybrid Operation: Outsource "Heavy Lifting"

Official Cloud API

To overcome local machine limits, commercial APIs like Grok Imagine and Vidu are integrated by default. The trend is smart usage: "Test locally (Free), Run production in Cloud (Pennis)."

👋 Summary: Paradise for the Determined

Error logs are not "rejection" but "dialogue." For those who enjoy troubleshooting, there is no toy box more stimulating than this.
Be satisfied with WebUI, or rule the "structure" with ComfyUI. The choice is yours.