GPTLink vs h2oGPT
A side-by-side comparison of two self-hosted self-hosted ai options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | GPTLink | h2oGPT |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 67 · Good | 15 · At risk |
| Status | Actively maintained | Archived |
| Category | Self-Hosted AI | Self-Hosted AI |
| License | MIT | Apache-2.0 |
| Language | PHP | Python |
| Setup difficulty | Easy | Medium |
| Min. RAM | 512 MB | 8,192 MB |
| Deployment | docker | docker, bare-metal, source |
| GitHub stars | ★ 2,629 | ★ 11,965 |
| First released | 2023 | 2023 |
| Replaces | ChatGPT | ChatGPT |
What are GPTLink and h2oGPT?
GPTLink
GPTLink is an open-source project for rapidly deploying a self-hosted ChatGPT web application with user management, billing and conversation history. It provides a ready-made frontend and backend for offering AI chat to multiple users.
- Ready-made chat frontend
- User and billing management
- Conversation history
- Fast Docker deploy
h2oGPT
h2oGPT is an open-source platform for private question answering and chat over documents using local or remote LLMs. It supports many file types, web search, and an OpenAI-compatible server.
- Document Q&A
- Many file formats
- OpenAI-compatible API
- Local and remote models
GPTLink vs h2oGPT: key differences
The biggest difference is maintenance: h2oGPT's repository is archived and no longer developed, while GPTLink is actively maintained. GPTLink is written in PHP, while h2oGPT is built with Python. Licensing differs — MIT for GPTLink versus Apache-2.0 for h2oGPT. GPTLink is the lighter option, starting around 512 MB of RAM against 8,192 MB for h2oGPT. H2oGPT has the considerably larger community, at 11,965 GitHub stars versus 2,629.
Why pick each one
Choose GPTLink if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Active community (2.6k GitHub stars)
Choose h2oGPT if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Mature project with 12k GitHub stars
- Written in Python
Frequently asked questions
Is GPTLink or h2oGPT better?
Neither is universally better. h2oGPT has the larger community, while GPTLink is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are GPTLink and h2oGPT free and open-source?
Yes. GPTLink is licensed under MIT and h2oGPT under Apache-2.0. Both can be self-hosted at no software cost.
Can I run GPTLink and h2oGPT with Docker?
GPTLink: yes. h2oGPT: yes.
Which is lighter on resources, GPTLink or h2oGPT?
GPTLink has the smaller minimum footprint at 512 MB of RAM, compared to about 8,192 MB for h2oGPT. Real-world usage depends on library size, user count, and enabled features.