Langfuse

Open source LLM engineering platform for traces, evals, and prompt management

Monitoring AI & Machine Learning ML Platforms

About

Langfuse is an open source platform that captures traces, runs evaluations, and manages prompts for LLM applications. It supports self-hosting and integrates with major frameworks like LangChain and OpenTelemetry.

Sovereignty Score

out of 100

Data completeness75% (Partial)

Jurisdictional(56%)

Significant foreign legal exposure risk

Jurisdiction: Germany (EU member)
Parent provider in United States (CLOUD Act risk) (ClickHouse, Inc.)
Five Eyes intelligence alliance exposure
US CLOUD Act applies (US can compel data access regardless of storage location)

Ownership(44%)

Significant foreign ownership or control risk

Mixed ownership (>30% non-EU)
Funding: Y Combinator W23, Berlin-based
Seed funding stage
Acquisition risk unknown (assumed high) (Submit verified data to improve this score)

More dimensions coming soon

GovernanceComing soon

PortabilityComing soon

LicenseComing soon

CommunityComing soon

How missing data affects scores Submit data corrections

Provider

Langfuse GmbH

Quick Facts

Jurisdiction: Germany, EU
Ownership: Mixed (>30% Non-EU)
License: MIT
Deployment: Self-host
Funding: Y Combinator W23, Berlin-based