You're paying $20 a month for ChatGPT. Maybe $200 for Pro.
There's a free, open-source version that runs entirely on your own machine no subscription, no API key, and not a single word of your chat ever leaves your computer.
It's called Open WebUI.
126,000 stars on GitHub. MIT licensed. $0, forever.
It gives you a ChatGPT-identical interface conversation history, model switching, file uploads, voice but pointed at models running locally on your own hardware through Ollama.
What you actually get:
- A clean chat UI that looks and feels exactly like ChatGPT
- RAG built in: drop in a PDF, DOCX or TXT and chat with your own documents, with citations
- Voice input and output
- Multi-user accounts with admin roles perfect for a family or a team
- Plugins and function calling
- 100% local. Your conversations sit in a folder on your machine, not on someone's server
And the setup is genuinely one command:
docker run -d -p 3000:8080
ghcr.io/open-webui/open-webuβ¦
Open localhost:3000, create your account, pick a model, start typing. If Ollama is already running, it auto-detects your models.
This isn't a fringe experiment anymore. Ollama crossed 52 million monthly downloads this year. Open WebUI is the default frontend in basically every "run AI locally" guide.
Now the math.
ChatGPT Plus: $240 a year. ChatGPT Pro: $2,400 a year. Every chat stored on their servers.
Open WebUI a local model: $0 a year. Every chat stored on your machine. No usage limits. No data leaving your network. No company training on what you typed.
But DO NOT install it. We should all keep paying $240 a year to rent an interface and hand over our private conversations as a bonus.
100% open source. (Link in the comments)