LangChain
Observe, Evaluate, and Deploy Reliable AI Agents

LangChain offers LangSmith, an agent engineering platform that helps teams build, test, monitor, and deploy AI agents across the full development lifecycle. It provides observability through structured tracing, evaluation tools using human feedback and automated scoring, and deployment infrastructure with memory and fault-tolerant scaling. The platform is framework-agnostic and supports Python, TypeScript, Go, and Java SDKs.
LangSmith traces each agent run into a structured timeline, captures production data for evaluation, and provides deployment infrastructure with memory, threading, and durable checkpointing.
AI engineers and development teams building production AI agents
Background.
- Status
- launched
- Business model
- freemium
- Company
- LangChain
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