head to head · open source
GPT4All vs ollaya
GPT4All has 77,354 GitHub stars, 8,254 forks, 771 open issues and last shipped 1.4 years ago. ollaya has 1,388 stars, 83 forks, 4 open issues and last shipped yesterday. GPT4All leads on adoption by 5,473% (77,354 vs 1,388 stars). GPT4All is written in C++ under MIT; ollaya is written in Rust under Apache-2.0. GPT4All has attracted 11% as many forks as stars, ollaya 6%. ollaya 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 | ollaya | |
|---|---|---|
| GitHub stars | ★ 77K | ★ 1.4K |
| License | MIT | Apache-2.0 |
| Written in | C++ | Rust |
| Last push | 2025-05-27 | 2026-10-24 |
| Forks | ⑂ 8.3K | ⑂ 83 |
| 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 ollaya if
- You want the ollaya feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and ollaya fits your workflow better
About GPT4All
GPT4All Now with support for DeepSeek R1 Distillations Website • Documentation • Discord • YouTube Tutorial GPT4All runs large language models (LLMs) privately on everyday desktops & laptops. No API calls or GPUs required you can just download the application and get started . Read about what's new in our blog . Subscribe to the newsletter GPT4All is made possible by our compute partner Paperspace . Download Links — Windows Installer — — Windows ARM Installer — — macOS Installer — — Ubuntu Installer — The Windows and Linux builds require Intel Core…
read the full GPT4All overview →
About ollaya
ollaya Run open decision models locally, the way Ollama runs LLMs. System 1 for AI agents: fast, typed, calibrated decisions for routing, guardrails, triage and tool approval. Website · Models · Bench · Docs · Releases · Hugging Face Created and maintained by Mert Cobanov ( @mertcobanov ). A decision model reads a state (a message, an email, a ticket, any JSON) plus typed questions ( choice , score , noul ) and returns calibrated probabilities in a single forward pass, in milliseconds. It never generates text. Ollaya pulls these models by name and serves them from a local daemon behind a self hosted, Jev…
read the full ollaya overview →
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Frequently asked questions
Is GPT4All or ollaya more popular?
GPT4All has 77,354 GitHub stars and ollaya has 1,388. GPT4All has the larger community by that measure.
Are GPT4All and ollaya free?
Both are open source. GPT4All is licensed under MIT and ollaya under Apache-2.0. Neither carries a licence fee.
What is the difference between GPT4All and ollaya?
GPT4All is written in C++ and ollaya in Rust. 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 ollaya?
Choose GPT4All if you want the larger community (77,354 stars) or its MIT licence terms. Choose ollaya if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.