AI & Automation

Langfuse

📦 Open Source 🟢 Updated this week

Open-source LLM observability — traces, evals, and prompt management

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Langfuse gives you full visibility into your LLM application with traces, latency monitoring, cost tracking, and evaluation pipelines. Prompt versioning, playground, and dataset management. Integrates with OpenAI, LangChain, LlamaIndex, and OpenTelemetry. YC W23. Acquired by ClickHouse.

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