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LangSmith and LangChain OSS provide full observability and tracing for AI agent execution, meeting EU AI Act requirements by enabling end-to-end tracing, automated evaluation of bias, hallucination, and accuracy, and ensuring trace data remains in jurisdiction. The platform supports EU data residency with self-hosted, BYOC, and managed cloud options, allowing continuous post-market monitoring and human oversight through interrupt primitives and annotation queues. Evaluators continuously score production traces, providing evidence trails and alerts for metric thresholds, while supporting Article 9, 12, 13, and 14 requirements for risk management, transparency, and human intervention.
Managed Deep Agents gives developers a managed way to build, run, and deploy Deep Agents with built-in runtime, streaming, sandboxes, evals, memory, and auth.

LangSmith Bring Your Own Cloud is now generally available on AWS, giving Enterprise teams managed observability, evaluation, and deployment inside their own VPC.

Learn what AI agents are, how they work in an LLM loop, and where workflows fit so you can build reliable, production-ready autonomous systems.
