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LangSmith is an Agent Engineering Platform for building, testing, and monitoring AI applications. It provides complete visibility into agent behavior, helping teams ship reliable AI agents with confidence.
Framework Agnostic
LangSmith works with any framework or library. Whether you're using LangChain, LangGraph, or building with other tools and custom implementations, LangSmith integrates seamlessly into your workflow. If you're already using LangChain or LangGraph, getting started is as simple as setting one environment variable.
Core Capabilities
Observability & Tracing
LangSmith Observability gives you complete visibility into what your agents are actually doing. With detailed tracing, you can see step-by-step what your agent is doing, quickly debug non-deterministic LLM behavior, and fix issues to improve latency and response quality.
Real-Time Monitoring & Alerting
Track business-critical metrics like costs, latency, and response quality with live dashboards. Set up alerts to get notified when issues occur, then drill into the root cause to resolve problems quickly.
Insights & Usage Patterns
Automatically discover clusters of similar conversations to understand what users actually want. Quickly identify all instances of similar problems to address systemic issues across your application.
Evaluation
Test and evaluate your AI applications to ensure quality and reliability before and after deployment.
Deployment
Deploy your agents with confidence using LangSmith's deployment capabilities.
Getting Started
You can sign up for LangSmith for free at smith.langchain.com. For detailed documentation, visit docs.smith.langchain.com.
Additional Resources
Docs: LangSmith Observability concepts
Webinar: Get started with LangSmith Tracing
Blog: LangSmith OTel support (OpenTelemetry)
Frequently Asked Questions
Does LangSmith support OpenTelemetry (OTel)?
Yes, LangSmith supports OTel integration.
Can I use LangSmith Observability without LangSmith Evaluation?
Yes, LangSmith's capabilities can be used independently based on your needs.
Can I self-host LangSmith?
Yes, self-hosting options are available for organizations that cannot have data leave their environment.
Will LangSmith add latency to my application?
LangSmith is designed to minimize impact on your application's performance.
Will you train on my data?
No, LangSmith does not train on customer data.