Langfuse

🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.

🪢 Open source AI engineering platform: AI Gateway, agent observability, evals, and prompt/skill management, built on OpenTelemetry. One open platform for every AI call and every agent. Self-host or use Langfuse Cloud.

End-to-end Langfuse workshop using a TypeScript Agent to teach the AI engineering loop: tracing, prompt management, monitoring, datasets, experiments, and evaluation.

Community-maintained Kubernetes config and Helm chart for Langfuse

🪢 Langfuse JS/TS SDK

🪢 Langfuse Python SDK

Agent Skills for Langfuse, the open source LLM engineering platform for tracing, prompt management, and evaluation

Run your Langfuse experiment with your GitHub action workflow.

🪢 Auto-generated Java Client for Langfuse API

[Beta] Community-maintained Terraform Provider for Langfuse