head to head · open source
Langfuse vs Olares
Langfuse has 36,970 GitHub stars, 4,150 forks, 926 open issues and last shipped yesterday. Olares has 5,339 stars, 331 forks, 155 open issues and last shipped 2 days ago. Langfuse leads on adoption by 592% (36,970 vs 5,339 stars). Langfuse is written in TypeScript under a custom or non-standard licence; Olares is written in Go under AGPL-3.0. Langfuse has attracted 11% as many forks as stars, Olares 6%. Langfuse 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
| Langfuse | Olares | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 5.3K |
| License | Custom / other | AGPL-3.0 |
| Written in | TypeScript | Go |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 4.2K | ⑂ 331 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Langfuse if
- You weight community size — 37K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Olares if
- You want the Olares feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Go
- You evaluated both and Olares fits your workflow better
About Langfuse
Langfuse Cloud · Self Host · Demo Docs · Report Bug · Feature Request · Changelog · Roadmap · Langfuse is an open source LLM engineering platform. It helps teams collaboratively develop, monitor, evaluate, and debug AI applications. Langfuse can be self hosted in minutes and is battle tested . Proudly made with ClickHouse open source database. 🧑💻 We're hiring Langfuse is growing fast (we doubled the team in the last 6 months) since January 2026 we're part of ClickHouse, we're hiring engineering hybrid across the EU. We hire engineers who love open source and great developer experiences. See open roles → ✨…
read the full Langfuse overview →
About Olares
Olares Your AI Agent. Your Data. Your Hardware. Install Olares · Manage Olares with AI · Contribute Olares is an open source personal cloud OS you operate in plain language, built to run AI agents and LLMs on hardware you own. Powered by Kubernetes, it turns your machines into a self hosted AI platform accessible from any browser, giving everyone from individual users to small teams a unified place for compute, storage, networking, and apps. 🌟 If Olares is useful to you, consider giving the project a star. Your support encourages us to keep improving it. Why Olares Great AI needs to know you. That requires…
read the full Olares overview →
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Frequently asked questions
Is Langfuse or Olares more popular?
Langfuse has 36,970 GitHub stars and Olares has 5,339. Langfuse has the larger community by that measure.
Are Langfuse and Olares free?
Both are open source. Langfuse has no licence declared in this registry, and Olares is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between Langfuse and Olares?
Langfuse is written in TypeScript and Olares in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Langfuse or Olares?
Choose Langfuse if you want the larger community (36,970 stars) or its Custom / other licence terms. Choose Olares if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.