Langfuse vs LangChain

Open-source LLM observability platform providing comprehensive tracing, analytics, and evaluation for AI applications — acquired by ClickHouse in January 2026 while remaining open source.

DevTools & AI Coding

LangChain

Provides the dominant open-source framework for building AI agents plus LangSmith, a commercial platform for tracing, evaluating, and monitoring LLM-powered applications in production.

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