Best Open Source llm observability Libraries

A curated list of the most popular GitHub repositories tagged with llm observability. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.

#1langfuse/langfuse

🪢 Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with OpenTelemetry, Langchain, OpenAI SDK, LiteLLM, and more. 🍊YC W23

22,137TypeScript

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#2comet-ml/opik

Debug, evaluate, and monitor your LLM applications, RAG systems, and agentic workflows with comprehensive tracing, automated evaluations, and production-ready dashboards.

17,798Python

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