LangSmith: pricing and features
by LangChain
Prices and features checked 2026-10-17 on the vendor's own pages. Anything we could not confirm says “not verified”.
What is LangSmith? LangChain's platform for tracing, evaluation, annotation queues and prompt management, plus agent deployment. Billed per seat plus traces beyond the included allowance.
Best for: Teams building on LangChain or LangGraph that want tracing, evals and agent deployment from the same vendor.
Pricing
- Free tier
- Developer $0: 1 seat, up to 5k base traces/month, then pay as you go [source, checked 2026-10-17]
- Entry paid price
- Plus $39/seat/month: up to 10k base traces/month, then pay as you go (per-trace rate not stated on the pricing page) [source, checked 2026-10-17]
- What you pay for (meter)
- Seats plus base traces (14-day retention) and extended traces (180-day) [source]
- Licence
- Hosted service; self-hosted and hybrid options on Enterprise [source]
- Self-hosting
- Self-hosted or hybrid on Enterprise only [source]
- Data retention
- Base traces 14 days; extended traces 180 days (extra fee) [source]
Features
| OpenTelemetry | OpenTelemetry tracing via OTLP endpoint [source] |
|---|---|
| CI gating | pytest and Vitest/Jest integrations that raise assertion errors in CI [source] |
| LLM-as-judge | LLM-as-a-judge evaluators [source] |
| Human annotation | Single-run and pairwise annotation queues [source] |
| Prompt management | Prompt versions, environments and access controls [source] |
| Dataset versioning | Every change creates a dataset version; versions can be tagged [source] |
| SOC 2 / HIPAA | LangChain states it maintains SOC 2 Type II, GDPR and HIPAA compliance [source] |
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Vendors: want a labelled featured slot on tool pages like this one? Sponsorships are always marked “Sponsored” and never change table order, verdicts or facts. See placements and how to book.