head to head · open source
GPT4All vs OpenLLM
GPT4All has 77,399 GitHub stars, 8,291 forks, 771 open issues and last shipped 1.3 years ago. OpenLLM has 12,535 stars, 841 forks, 20 open issues and last shipped 4 days ago. GPT4All leads on adoption by 517% (77,399 vs 12,535 stars). GPT4All is written in C++ under MIT; OpenLLM is written in Python under Apache-2.0. GPT4All has attracted 11% as many forks as stars, OpenLLM 7%. OpenLLM was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (llm-inference), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| GPT4All | OpenLLM | |
|---|---|---|
| GitHub stars | ★ 77K | ★ 13K |
| License | MIT | Apache-2.0 |
| Written in | C++ | Python |
| Last push | 2025-05-27 | 2026-09-14 |
| Forks | ⑂ 8.3K | ⑂ 841 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick GPT4All if
- You weight community size — 77K stars and counting
- You want the MIT license terms
- Your stack matches C++
- You value the larger contributor base for long-term maintenance
pick OpenLLM if
- You want the OpenLLM feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and OpenLLM fits your workflow better
About GPT4All
GPT4All is an MIT licensed C++ chat application and Python client from Nomic that runs large language models privately on everyday desktops and laptops, built for developers and teams who want local inference without API calls, GPUs, or sending data off device.
read the full GPT4All overview →
About OpenLLM
OpenLLM is an Apache 2.0 Python project from BentoML that runs open source or custom large language models as OpenAI compatible API endpoints on self hosted infrastructure, and it is aimed at developers and platform teams who want to serve Llama, Qwen, Mistral, DeepSeek and similar models in the cloud without rewriting their client code.
read the full OpenLLM overview →
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Frequently asked questions
Is GPT4All or OpenLLM more popular?
GPT4All has 77,399 GitHub stars and OpenLLM has 12,535. GPT4All has the larger community by that measure.
Are GPT4All and OpenLLM free?
Both are open source. GPT4All is licensed under MIT and OpenLLM under Apache-2.0. Neither carries a licence fee.
What is the difference between GPT4All and OpenLLM?
GPT4All is written in C++ and OpenLLM in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, GPT4All or OpenLLM?
Choose GPT4All if you want the larger community (77,399 stars) or its MIT licence terms. Choose OpenLLM if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.