LangFuse

Lesson in the AI Engineer Roadmap · Stage 19: LLM Evaluations

Last updated 14 September 2026

What is LangFuse?

LangFuse is an open-source LLM observability platform that provides tracing, prompt management, and evaluation tooling. You can self-host it or use the cloud version. It integrates with most popular frameworks and SDKs through a simple API, and lets you score traces manually or automatically to build up a quality signal over time.

Study this in the interactive course See the whole AI Engineer roadmap

Free resources to learn LangFuse

Official docsLangfuse Overview
VideoGet Started with Langfuse - Open-Source LLM Monitoring

LangFuse: common questions

Can I learn LangFuse in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain LangFuse in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this LangFuse tutorial for beginners?

It is lesson 158 of 189 in the free AI Engineer roadmap, in stage 19, LLM Evaluations. If you are new to AI Engineer, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.