Langfuse by langfuse
Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with OpenTelemetry, Langchain, OpenAI SDK, LiteLLM, and more. YC W23
About Langfuse
From the project's README at github.com/langfuse/langfuse. Lightly cleaned for readability; for the full source see the upstream repo.
Langfuse uses GitHub Discussions for Support and Feature Requests.
We're hiring. Join us in product engineering and technical go-to-market roles.
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 27k | github.com/langfuse/langfuse |
| GitHub forks | 2.7k | github.com/langfuse/langfuse |
| Docker Hub pulls | 9.7M | hub.docker.com / langfuse |
| NPM downloads (last month) | 5.1M | langfuse |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 3.1 years | since May 2023 |
| Last commit | 2 months ago | May 4, 2026 |
| Releases shipped | 559 | last: 2 months ago |
| Security policy | SECURITY.md | declared by maintainers |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
Security advisories
CVE-2026-24055. What people say on Hacker News
- LangPulse – Which languages are gaining traction?
- Remote Code Execution on Langfuse with a single OTel trace request
- Scaling ClickHouse to petabytes of AI observability data
- Show HN: Scheme-langserver – Digest incomplete code with static analysis
- Prompt Injection Is a LangSec Problem: Unsolvable in the General Case
Ready to self-host Langfuse?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed Jun 21, 2026.
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