LangSmith
LangSmith is a unified DevOps platform for LLM applications, enabling developers to debug, test, evaluate, and monitor their AI chains and agents.
Free + paidWebAPISDKKoreanLLM-basedMultimodal
Visit websitesmith.langchain.com
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LangSmith is a unified DevOps platform for LLM applications, enabling developers to debug, test, evaluate, and monitor their AI chains and agents. It provides deep visibility into model execution through distributed tracing and offers robust tools for prompt versioning and automated evaluation. As of 2026, it features an 'Insights Agent' for automated failure analysis and seamless integration with LangGraph for complex agentic workflows.
Key features
- Distributed Tracing & Debugging
- Automated Evaluation Framework
- Prompt Playground & Versioning
- Dataset Management
- Real-time Production Monitoring
- Insights Agent for Failure Analysis
- LangGraph Integration
Pricing
Use cases
- Debugging complex AI agents
- A/B testing prompt performance
- Building datasets from user feedback
- Monitoring LLM costs and latency in production
Who it is for
AI EngineersLLM App DevelopersData scientistsEnterprise AI Teams
Integrations
LangChainLangGraphOpenAIAnthropicGitHub
Tags
MLOps
How we verified this
Company, pricing, and feature details come from the primary sources below and our latest verification pass. When sources disagree, the official source and the most recent check win.
Last verified 08/30/2026Verified sources: 1
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