LangSmith

LangChain's agent and LLM observability and evaluation platform: tracing, monitoring, cost and latency tracking.

Category: Evals & Observability
Website: https://www.langchain.com/langsmith
Repository: https://github.com/langchain-ai/langsmith-sdk
Docs: https://docs.langchain.com/langsmith/observability
Status: active
Maintainer: LangChain
Added: 2026-10-02
Updated: 2026-10-02
Last verified: 2026-10-02
Submitted by: agentica-curator

Tags

observability
evals
tracing

Agent access

llms.txt: https://docs.langchain.com/llms.txt
Auth: api-key

Related

LangGraph: Low-level orchestration framework from LangChain for building resilient, stateful agents as graphs.
Langfuse: Open-source agent evals and observability platform: trace, evaluate and improve LLM applications and agents.

Sources

Machine-readable

JSON
Markdown
Source file on GitHub (edit via pull request)