head to head · open source
Langfuse vs lancedb
Langfuse has 36,970 GitHub stars, 4,150 forks, 926 open issues and last shipped yesterday. lancedb has 11,841 stars, 1,150 forks, 627 open issues and last shipped yesterday. Langfuse leads on adoption by 212% (36,970 vs 11,841 stars). Langfuse is written in TypeScript under a custom or non-standard licence; lancedb is written in Rust under Apache-2.0. Langfuse has attracted 11% as many forks as stars, lancedb 10%. lancedb 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 | lancedb | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 12K |
| License | Custom / other | Apache-2.0 |
| Written in | TypeScript | Rust |
| Last push | 2026-11-04 | 2026-11-04 |
| Forks | ⑂ 4.2K | ⑂ 1.1K |
| 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 lancedb if
- You want the lancedb 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 lancedb 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 lancedb
The Multimodal AI Lakehouse How to Install ✦ Detailed Documentation ✦ Tutorials and Recipes ✦ Contributors The ultimate multimodal data platform for AI/ML applications. LanceDB is designed for fast, scalable, and production ready vector search. It is built on top of the Lance columnar format. You can store, index, and search over petabytes of multimodal data and vectors with ease. LanceDB is a central location where developers can build, train and analyze their AI workloads. Demo: Multimodal Search by Keyword, Vector or with SQL Star LanceDB to get updates! ⭐ Click here ⭐ to see how fast we're growing! Key…
read the full lancedb overview →
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Frequently asked questions
Is Langfuse or lancedb more popular?
Langfuse has 36,970 GitHub stars and lancedb has 11,841. Langfuse has the larger community by that measure.
Are Langfuse and lancedb free?
Both are open source. Langfuse has no licence declared in this registry, and lancedb is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Langfuse and lancedb?
Langfuse is written in TypeScript and lancedb 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, Langfuse or lancedb?
Choose Langfuse if you want the larger community (36,970 stars) or its Custom / other licence terms. Choose lancedb if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.