head to head · open source
faiss vs Agenta
faiss has 41,256 GitHub stars, 4,586 forks, 327 open issues and last shipped 2 days ago. Agenta has 4,891 stars, 725 forks, 309 open issues and last shipped yesterday. faiss leads on adoption by 744% (41,256 vs 4,891 stars). faiss is written in C++ under MIT; Agenta is written in TypeScript under a custom or non-standard licence. faiss has attracted 11% as many forks as stars, Agenta 15%. Agenta 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
| faiss | Agenta | |
|---|---|---|
| GitHub stars | ★ 41K | ★ 4.9K |
| License | MIT | Custom / other |
| Written in | C++ | TypeScript |
| Last push | 2026-11-03 | 2026-11-04 |
| Forks | ⑂ 4.6K | ⑂ 725 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick faiss if
- You weight community size — 41K stars and counting
- You want the MIT license terms
- Your stack matches C++
- You value the larger contributor base for long-term maintenance
pick Agenta if
- You want the Agenta feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and Agenta fits your workflow better
About faiss
Faiss Faiss is a library for efficient similarity search and clustering of dense vectors. It contains algorithms that search in sets of vectors of any size, up to ones that possibly do not fit in RAM. It also contains supporting code for evaluation and parameter tuning. Faiss is written in C++ with complete wrappers for Python/numpy. Some of the most useful algorithms are implemented on the GPU. It is developed primarily at Meta's Fundamental AI Research group. News See CHANGELOG.md for detailed information about latest features. Introduction Faiss contains several methods for similarity search. It assumes that…
read the full faiss overview →
About Agenta
The open source workspace for building and running agents Build agents that automate your work by chatting with them. Share them with your team , connect them to the apps you use, and run them in the background . Documentation • Website • Agenta Cloud What is Agenta? Agenta is an open source workspace where you build specialized agents that automate and augment your work. You build agents by chatting with them. You describe the work, connect the apps they need, and improve them through feedback. You can work with your agents directly in chat and share them with your team. For recurring work, you can…
read the full Agenta overview →
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Frequently asked questions
Is faiss or Agenta more popular?
faiss has 41,256 GitHub stars and Agenta has 4,891. faiss has the larger community by that measure.
Are faiss and Agenta free?
Both are open source. faiss is licensed under MIT, and Agenta has no licence declared in this registry. Both are free to self-host.
What is the difference between faiss and Agenta?
faiss is written in C++ and Agenta in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, faiss or Agenta?
Choose faiss if you want the larger community (41,256 stars) or its MIT licence terms. Choose Agenta if its feature set, stack or Custom / other licence fits better. Both are self-hostable.