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LangSmith

LangSmith

LLM observability and evaluation platform

4.2Industry consensus
Freemium
LangChain Founded 2023 smith.langchain.com

About LangSmith

LangSmith by LangChain provides observability, testing, and evaluation tools for LLM applications. It helps developers debug, monitor, and improve their AI applications with tracing and dataset management.

Key Features

LLM tracing and debugging
Evaluation datasets
Prompt testing
Production monitoring
Annotation queues
Comparison experiments

Pros

  • Essential for LLM development
  • Strong LangChain integration
  • Good free tier
  • Comprehensive tracing

Cons

  • Best with LangChain ecosystem
  • Complex for beginners
  • UI can be overwhelming

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