---
id: langfuse
version: "4.14.4"
license: MIT
license_treatment: permissive
maintenance: active
---

# langfuse — Langfuse Python SDK - LLM observability/tracing, datasets, experiments, LLM-as-a-judge evaluation, and prompt management

License: permissive · Maintenance: active · Popularity: top 1,000 on PyPI

## Install

pip install langfuse
uv add langfuse
poetry add langfuse

## Description

<img width="2400" height="600" alt="hero-b" src="https://github.com/user-attachments/assets/4005eb1b-539d-4d35-9683-3a61ec9d9301" />

# Langfuse Python SDK

[![MIT License](https://img.shields.io/badge/License-MIT-red.svg?style=flat-square)](https://opensource.org/licenses/MIT)
[![CI test status](https://img.shields.io/github/actions/workflow/status/langfuse/langfuse-python/ci.yml?style=flat-square&label=All%20tests)](https://github.com/langfuse/langfuse-python/actions/workflows/ci.yml?query=branch%3Amain)
[![PyPI Version](https://img.shields.io/pypi/v/langfuse.svg?style=flat-square&label=pypi+langfuse)](https://pypi.python.org/pypi/langfuse)
[![GitHub Repo stars](https://img.shields.io/github/stars/langfuse/langfuse?style=flat-square&logo=GitHub&label=langfuse%2Flangfuse)](https://github.com/langfuse/langfuse)
[![Discord](https://img.shields.io/discord/1111061815649124414?style=flat-square&logo=Discord&logoColor=white&label=Discord&color=%23434EE4)](https://discord.gg/7NXusRtqYU)
[![YC W23](https://img.shields.io/badge/Y%20Combinator-W23-orange?style=flat-square)](https://www.ycombinator.com/companies/langfuse)

The [Langfuse](https://langfuse.com) Python SDK covers the full...

## AI interpretation — verify before relying

Langfuse is a Python SDK for LLM observability, tracing, and evaluation that provides OpenTelemetry-based instrumentation, dataset management, experiment tracking, and prompt management capabilities.

Verdict: Langfuse is a mature, actively maintained observability SDK for LLM applications with low install friction, no known vulnerabilities, and permissive MIT licensing. It integrates OpenTelemetry standards and supports OpenAI/LangChain workflows. Suitable for production use in LLM tracing and evaluation pipelines.

[View on SkillFed](https://skillfed.io/packages/langfuse) · [View on PyPI](https://pypi.org/project/langfuse/)