How Much Does LangSmith Cost?
LangSmith pricing ranges from a free developer tier to enterprise plans for teams.
LangSmith pricing breakdown (2026)
| Plan | Price | What you get |
|---|---|---|
| Developer | $0 | Up to 5K traces/month, basic features |
| Plus | $39/seat/mo | 50K traces, evals, datasets |
| Enterprise | Custom | Unlimited, SSO, dedicated support |
Is LangSmith worth it?
LangSmith's developer tier is generous for getting started. For pure cost control (not tracing), sipi.bot is purpose-built and cheaper at scale.
Hidden costs to watch for
- Overage charges: many plans bill per-unit once you exceed limits — read the fine print
- Seat-based add-ons: admin seats, API seats, and viewer seats are often priced separately
- Integration premiums: connecting to certain data sources or tools may require a higher tier
- Annual lock-in: monthly billing is often 20-30% more expensive than annual
Cost-conscious alternative: sipi.bot offers a free tier for spend firewall with transparent, predictable pricing. See pricing →
Related resources
LangSmith pricing tiers (2026)
- Developer: Free — 3,000 traces/month, basic evaluation, 7-day data retention.
- Plus: $39/month per seat — 10,000 traces/month, extended evaluation, 30-day retention.
- Enterprise: Custom pricing — unlimited traces, custom retention, SSO, SLA, dedicated support.
Hidden costs
LangSmith charges per trace — every agent execution generates a trace, and high-volume agent workloads can quickly exceed free-tier limits. At scale, costs compound: you pay for the LLM calls plus the observability infrastructure to monitor them. LangSmith tells you your agent cost $500 in tokens — but it doesn't prevent the $500 from being spent. sipi.bot prevents the spend in the first place, so you don't need to monitor costs you never incurred.