by LangChain Inc.
Observability, evaluation, and dataset management platform for LLM applications.
Pricing verified 2026-05-01. Always confirm current pricing on the vendor's website.
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| Plan | Price | Includes |
|---|---|---|
| Developer | Free | 5K traces/mo, 1 user |
| Plus | $39/mo | 50K traces/mo, 5 users, Datasets |
| Enterprise | Custom | Unlimited, SSO, On-prem |
Pricing and features as of 2026-05-01.
LangSmith offers a free plan. Paid plans start from $39/mo.
Yes, LangSmith has a free plan.
Key features of LangSmith include: Tracing, Prompt management, Evaluation datasets, A/B testing, Human feedback.