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Observability and evals for LLM apps and agents
LangSmith is LLM observability and evaluation software offering a platform from LangChain for tracing, evaluating and deploying LLM applications and agents. Founded in 2023 and based in San Francisco, California, USA, LangSmith helps teams building agents with or without LangChain work more efficiently and achieve better outcomes.
LangSmith is built for teams building agents with or without LangChain. It suits teams that want agent and LLM tracing without spreadsheets and disconnected tools.
Compared with alternatives like Langfuse, LangSmith differentiates on agent and LLM tracing. Pricing is quote-based and scoped to your usage and team size.
Pricing Model
Quote-based
Starting Price
Contact vendor
Free Options
Free trial
Core LangSmith for growing teams. Contact for a quote.
Advanced LangSmith for larger organizations. Contact for a quote.
| Feature | Professional Popular | Enterprise |
|---|---|---|
| agent and LLM tracing | , | |
| evaluation datasets and experiments | , | |
| Integrations | , | |
| Analytics and reporting | , | |
| Standard support | , | |
| Everything in Professional | , | |
| prompt hub and playground | , | |
| agent deployment | , | |
| Advanced security and controls | , | |
| Dedicated support and onboarding | , |
Other
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API Types
SDK Availability
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Developer Features
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Compliance Standards
SOC 2 Type II
EnterpriseISO 27001
EnterpriseGDPR Compliant
GlobalHIPAA
HealthcarePCI DSS
FinanceCCPA
PrivacyFedRAMP
GovernmentCSA STAR
CloudDeployment & Data
Data Residency Options
Verify with vendor for your specific region requirements.
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