LangSmith
LLM observability and evaluation from the LangChain team
Overview
LangSmith is the LangChain team's commercial LLM observability platform — traces, datasets, evaluators, prompt management. Tightly integrated with LangChain and LangGraph but works with any LLM stack. Free tier covers small teams; paid plans add SSO, data retention controls and production-scale ingestion.
Pricing
Pricing shown for reference only. These figures reflect RECATOOLS research as of 19 May 2026 and may be out of date or incomplete. This is not financial or purchasing advice — always confirm the current price on the provider’s official website before making any decision.
Use cases
ASEAN Perspective
LangSmith in Southeast Asia
ASEAN-region availability and pricing notes coming soon. Drop the editorial team a note via /contact/ if you can supply local context (Singapore/Malaysia/Indonesia/Thailand/Vietnam).
LangSmith is LangChain's first-party platform for tracing, debugging, evaluating and monitoring LLM applications, with the tightest integration into LangChain and LangGraph of any observability tool. It suits teams already committed to the LangChain stack who want eval datasets, prompt iteration and production monitoring in one managed place.
It is polished but more vendor-aligned than open alternatives like Langfuse: it is closed-source SaaS, pricing scales with traces, and the deepest value comes if you live inside the LangChain ecosystem. Globally available with good docs and SDKs. No SEA-specific data residency, so regional compliance is on you.
About this listing
This entry was compiled from publicly available data including LangSmith's official website, press releases, documentation, and reputable third-party publications. RECATOOLS is not affiliated with LangSmith unless explicitly stated.
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