Langfuse
LLM engineering platform for model tracing, prompt management, and application evaluation. Langfuse helps teams collaboratively debug, analyze, and iterate on their LLM applications such as chatbots….
- Developer Tools
- TypeScript
- MIT
- Docker
- Actively maintained
GitHub stats
- GitHub stars
- 35,416
- Forks
- 3,929
- Open issues
- 325
- Commits, last 12 months
- 4,298
- Last commit
- Oct 6, 2026
- Latest release
- v4.51.0Oct 5, 2026
- Created
- May 18, 2023
Data from the GitHub API, refreshed daily.
About Langfuse
LLM engineering platform for model tracing, prompt management, and application evaluation. Langfuse helps teams collaboratively debug, analyze, and iterate on their LLM applications such as chatbots…. Langfuse is open source under the MIT license and written mainly in TypeScript, so you can read the code, run it on your own hardware and keep full control of your data.
The project has 35,416 stars and 3,929 forks on GitHub, with 4,298 commits over the last year. It ships a Docker image, which makes it a good fit for a small VPS or a home server running Docker Compose.
Topics
- analytics
- llm
- llmops
- large-language-models
- openai
- self-hosted
- ycombinator
- monitoring
- observability
- open-source
Open-source alternative to
Langfuse can replace these commercial products. Compare every option on each page.
Repository preview
Similar apps
More apps like Langfuse
Other projects in Developer Tools, ranked by GitHub stars.
OpenHands
OpenHands/OpenHands
Platform for AI software development agents that write code and run commands.
AI & LLM ToolsTypeScriptDockercode-server
coder/code-server
VS Code in the browser, hosted on a remote server.
Developer ToolsTypeScriptDockerSentry Self-Hosted
getsentry/sentry
Powerful error tracking platform with wide language support and a robust API.
Developer ToolsPythonPostHog
PostHog/posthog
Product analytics, session recording, feature flagging and a/b testing that you can self-host (alternative to Mixpanel, Amplitude, Heap, HotJar, Optimizely).
AnalyticsPythonPortainer
portainer/portainer
Web UI for managing Docker, Swarm and Kubernetes environments.
Self-hosting PlatformsTypeScriptDockerk6
grafana/k6
Modern load testing tool using JavaScript scripts.
Developer ToolsGoDocker
What is Langfuse?
Langfuse is a free, open-source app you can host on your own server, listed in our Developer Tools category. LLM engineering platform for model tracing, prompt management, and application evaluation. Langfuse helps teams collaboratively debug, analyze, and iterate on their LLM applications such as chatbots…. The source code lives at github.com/langfuse/langfuse, where it has 35,416 stars.
Is Langfuse free and open source?
Yes. Langfuse is open-source software released under the MIT license, so you can self-host it at no cost. You only pay for the server it runs on, and some projects also offer an optional paid cloud plan.
Can I run Langfuse with Docker?
Yes. Langfuse provides a Docker image, so you can run it on any Linux server with Docker and Docker Compose installed. The project README lists the image name and the environment variables to set.
What are the best alternatives to Langfuse?
Popular open-source alternatives to Langfuse include OpenHands, code-server and Sentry Self-Hosted. Langfuse itself is a self-hosted alternative to Sentry.
Is Langfuse actively maintained?
The most recent commit to Langfuse was on Oct 6, 2026 with 4,298 commits in the past twelve months. The latest release is v4.51.0, published Oct 5, 2026. Check the open issues on GitHub to gauge how quickly maintainers respond.