head to head · open source
GPT4All vs zvec
GPT4All has 77,399 GitHub stars, 8,291 forks, 771 open issues and last shipped 1.3 years ago. zvec has 15,962 stars, 996 forks, 56 open issues and last shipped yesterday. GPT4All leads on adoption by 385% (77,399 vs 15,962 stars). GPT4All is written in C++ under MIT; zvec is written in C++ under Apache-2.0. GPT4All has attracted 11% as many forks as stars, zvec 6%. zvec was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | zvec | |
|---|---|---|
| GitHub stars | ★ 77K | ★ 16K |
| License | MIT | Apache-2.0 |
| Written in | C++ | C++ |
| Last push | 2025-05-27 | 2026-09-17 |
| Forks | ⑂ 8.3K | ⑂ 996 |
| 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 zvec if
- You want the zvec feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C++
- You evaluated both and zvec 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 zvec
Zvec is an open source, in process vector database written in C++ and licensed under Apache 2.0, built to embed directly into applications so that vector search, full text search, and hybrid retrieval run inside the developer's own process instead of behind a separate service.
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Frequently asked questions
Is GPT4All or zvec more popular?
GPT4All has 77,399 GitHub stars and zvec has 15,962. GPT4All has the larger community by that measure.
Are GPT4All and zvec free?
Both are open source. GPT4All is licensed under MIT and zvec under Apache-2.0. Neither carries a licence fee.
What is the difference between GPT4All and zvec?
GPT4All is written in C++ and zvec in C++. 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 zvec?
Choose GPT4All if you want the larger community (77,399 stars) or its MIT licence terms. Choose zvec if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.