{"data":{"slug":"langfuse","name":"Langfuse","tagline":"Open-source LLM observability you can self-host","category":"agents","categoryName":"AI Agents","url":"https://langfuse.com","github":"https://github.com/langfuse/langfuse","pricing":"open-source","hook":"Langfuse is the observability platform you can run on your own infrastructure.","whatsGood":"Langfuse is the open-source default for LLM observability. The entire stack—web app, worker, Postgres, ClickHouse, Redis—runs on your infrastructure under MIT license. OpenTelemetry-style tracing captures the full tree of spans and generations with token counts, latency, cost, and model metadata.","theCatch":"Self-hosting means self-operating—you are running Postgres, ClickHouse, Redis, and the app. Observability-first means evals are layered on, not central.","verdict":"The LLM observability platform for teams who want to own their data.","addedAt":"2026-08-19","featured":false,"domain":"AI Agents","subSpecialty":"Memory & Evals","capabilities":["observability","llm"],"surfaces":["Self-host"],"ecosystem":["Multi-platform"],"licenseModel":"OSS/MIT","githubStars":34146},"related":[{"slug":"claude-code","name":"Claude Code","tagline":"Terminal-first coding agent with deep repository context"},{"slug":"cursor","name":"Cursor","tagline":"The AI-first code editor that understands your codebase"},{"slug":"devin","name":"Devin","tagline":"Autonomous AI engineer for defined engineering tasks"},{"slug":"stagehand","name":"Stagehand","tagline":"AI-native browser automation that mixes code and natural language"},{"slug":"browser-use","name":"Browser Use","tagline":"Open-source framework for LLM-driven browser agents"}],"links":{"self":"/api/gems/langfuse","html":"/gems/langfuse","markdown":"/gems/langfuse.md","category":"/api/gems?category=agents","categoryPage":"/stacks/agents"}}