Langfuse

Framework-agnostic LLM tracing with a generous free tier, built by a German team with strong European privacy standards. Tracks cost, latency, and quality across your entire LLM pipeline with detailed trace views.

AI ToolFree Tier: Free self-host; cloud free tierCompany: Langfuse GmbH (Germany)Category: Cost OptimizationOpen Source: YesQuick Start: Self-host with Docker or sign up for the free cloud tier → Add the Langfuse SDK to your LLM pipeline → View traces, costs, and quality scores in the dashboard

Langfuse

Framework-agnostic LLM tracing — generous free tier, European privacy

Visit Langfuse →

Framework-agnostic LLM tracing with a generous free tier, built by a German team with strong European privacy standards. Tracks cost, latency, and quality across your entire LLM pipeline with detailed trace views.

FREE TIER
Free self-host; cloud free tier
COMPANY
Langfuse GmbH (Germany)
CATEGORY
Cost Optimization › Observability
OPEN SOURCE
Yes
PRIVACY
European; GDPR; self-hosted
TAGS
tracingeuropeanobservability

QUICK START

Self-host with Docker or sign up for the free cloud tier → Add the Langfuse SDK to your LLM pipeline → View traces, costs, and quality scores in the dashboard

BEST FOR

  • ▸European teams needing GDPR-compliant LLM observability for sensitive data.
  • ▸LLM developers optimizing cost, latency & quality across complex pipelines.
  • ▸Startups & developers preferring open-source, self-hosted LLM tracing with a free tier.

NOT FOR

  • ✕Teams not building LLM applications or needing general app monitoring.
  • ✕Users needing simple logging or general system monitoring, not LLM-specific insights.

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