OpenSourceHub
3 open-source alternatives found

Best Open-Source Alternatives
to ChatGPT in 2026

Stop paying for ChatGPT. These free, open-source tools give you full data ownership, no vendor lock-in, and deploy for as little as $5/month on your own VPS.

Top pick
open-webui
156.4k ⭐ · NOASSERTION
View

Open Source vs ChatGPT: Full Comparison

Feature Open SourceChatGPT
Free to use (forever)
Self-hosted / private data
Open source (auditable code)
No vendor lock-in
Docker / 1-click deploy
Unlimited users / events
Custom domain & branding
Managed updates & backups
Built-in CDN & scaling
Enterprise SLA & support

Deploy open-webui in Minutes

Follow these steps to get your self-hosted instance up and running.

  1. 1
    git clone https://github.com/open-webui/open-webui

    Clone the repository

  2. 2
    npm install && cp .env.example .env

    Install dependencies and configure env

  3. 3
    npm run build && npm start

    Build and launch the application

  4. 4
    Configure reverse proxy (nginx/Caddy)

    Point your domain at the app

All Open-Source Alternatives to ChatGPT

Sorted by GitHub stars — the most popular community-backed options first.

open-webui

AI & LLMs
156.4k

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

Alt to ChatGPTPython
Oct 2026
GitHub

jan

AI & LLMs
45.0k

Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.

Alt to ChatGPTRust
Oct 2026
GitHub

llama-gpt

AI & LLMs
10.9k

A self-hosted, offline, ChatGPT-like chatbot. Powered by Llama 2. 100% private, with no data leaving your device. New: Code Llama support!

Alt to ChatGPTTypeScriptMIT
Oct 2026
GitHub