Home › Directory › Observability & Evals › LangSmith
LangSmith
Tracing, evaluation and monitoring platform for LLM applications and agents.
| Category | Observability & Evals |
|---|---|
| Authentication | API key |
| Pricing | Free tier |
| Website | https://www.langchain.com/langsmith |
| Docs | https://docs.smith.langchain.com |
| Last checked | 2026-10-14 |
| As JSON | /api/v1/directory/langsmith.json |
Information is summarised in our own words and may be out of date; check the vendor's site for current terms and prices. Not affiliated with LangSmith. Suggest a correction.
More in Observability & Evals
Langfuse
Open-source observability for LLM apps: traces, evals, prompt management and cost tracking.
Opik
Open-source LLM evaluation and observability from Comet.
OpenLLMetry
OpenTelemetry-based instrumentation for LLM applications.
OpenInference
Open conventions and instrumentation for AI observability based on OpenTelemetry.