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SwarmUI

Free, open-source web interface for generating images and video with AI models on your own computer.

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Is SwarmUI free?

Yes, SwarmUI has a free plan. What you get: Open source (MIT): 100% free to run on your own computer, no paid tier. Watch out: on Windows 10 you may need to install git and the .NET 8 SDK yourself first. No usage limit: 100% free and open source, with no paid tier. Verified on github.com.

Free plan at a glance

Includes
  • Open source (MIT): 100% free to run on your own computer, no paid tier

No usage limit: 100% free and open source, with no paid tier.

Duration
Free forever
Your content
The maker says it isn't used to train AI

How to get it free

Self-host
  1. Download the installer for your system (Install-Windows.bat on Windows, install-linux.sh on Linux, or clone the repository on a Mac)
  2. Run it; it installs itself and opens the install page in your browser
  3. Follow the install instructions on the page and wait while it downloads models

Good to know

  • On Windows 10 you may need to install git and the .NET 8 SDK yourself first
  • The Windows installer sometimes needs to run twice
Get the free plan

github.com, Checked Source

Overview

SwarmUI (formerly StableSwarmUI) is an MIT-licensed web interface for image models such as Stable Diffusion and Flux, video models such as Wan and LTX-2, and some audio models. It runs locally on Windows, Linux and M-series Macs, and the maker says it collects no data.

Key features

  • Generate tab for beginners, with an image editor and automatic workflow generation
  • Comfy Workflow tab that gives advanced users the raw node graph
  • Image models such as Stable Diffusion and Flux, and video models such as Wan and LTX-2
  • Grid Generator for comparing settings across many images
  • Install scripts for Windows, Linux and macOS, plus Docker

Best for

People
Beginners who want a simple Generate tab for local image AI, Advanced users who also want ComfyUI-style node workflows, People who want image and video generation that stays on their own computer

Limitations

  • Needs a modern GPU: Nvidia RTX 30xx or newer is recommended, and others may work but are limited
  • On a Mac it runs only on M-series Apple silicon
  • Still a Beta (v0.9.8): LLM-assisted prompting isn't built in yet

Screenshot

SwarmUI screenshot, as published by SwarmUI
Image published by SwarmUI

FAQ

Is SwarmUI free?
Yes. SwarmUI has a free plan: Open source (MIT): 100% free to run on your own computer, no paid tier. We last checked github.com's pricing page on 2026-10-24.
What does the SwarmUI free plan include?
Open source (MIT): 100% free to run on your own computer, no paid tier. Source: https://github.com/mcmonkeyprojects/SwarmUI (checked 2026-10-24).
How do I get SwarmUI for free?
Steps: Download the installer for your system (Install-Windows.bat on Windows, install-linux.sh on Linux, or clone the repository on a Mac); Run it; it installs itself and opens the install page in your browser; Follow the install instructions on the page and wait while it downloads models. Start at https://github.com/mcmonkeyprojects/SwarmUI (checked 2026-10-24).
Do I need an account to use SwarmUI for free?
Not for the free option: the free route is to self-host SwarmUI (Download the installer for your system (Install-Windows.bat on Windows, install-linux.sh on Linux, or clone the repository on a Mac)). Checked 2026-10-24.
What's the catch with SwarmUI's free plan?
On Windows 10 you may need to install git and the .NET 8 SDK yourself first. The Windows installer sometimes needs to run twice. Checked 2026-10-24.
What are free alternatives to SwarmUI?
NightCafe, PixAI and Upscale.media all have free plans. We checked their free offers on 2026-10-25.
Is SwarmUI open source?
Yes, under the MIT License. The maker says it runs entirely locally on your own computer by default and does not collect any data from you.Source: swarmui.net
What computer do I need?
Windows, Linux or an M-series Mac with a modern GPU. The maker recommends an Nvidia RTX 30xx or newer; other GPUs may work but are limited.Source: swarmui.net
Can I try SwarmUI without installing it?
You can try it on Google Colab, though Colab may not allow remote web UIs on free accounts, or rent a cloud server on Runpod or Vast.ai using templates.Source: github.com/mcmonkeyprojects/SwarmUI

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Sources

Free offer
Verified on github.com/mcmonkeyprojects/SwarmUI
…is 100% free and open source…
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How we check free offers

Added by our team. We check that a free option exists and record the date; signing up is between you and SwarmUI, so read their privacy policy and terms first.

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