Langfuse
Open-source LLM observability.
Open sourceAPIOpen source
100 · Fresh2026-07-09
Live preview of https://langfuse.com
TL;DR
Langfuse traces, evaluates, and monitors LLM apps; open source with a free cloud tier.
Tags
FAQ
Is Langfuse free?
Langfuse is open source. Its free tier is not verified card-free.
Does Langfuse have an API?
Yes, Langfuse offers an API.
What are alternatives to Langfuse?
Alternatives include Speakeasy, Softr, Continue.