LangSmith pricing
Pay-as-you-go in LSUs ($1/LSU) beyond included. From $39/mo · checked 2026-10-29 · verified against official page
Plans
| Plan | Price / what's included |
|---|---|
| Developer | $0/seat, 5k base traces/mo, 1 seat |
| Plus | $39/seat/mo, 10k base traces/mo |
| Usage | $1 per LSU; 0.005 LSU per extra trace |
| Enterprise | Custom |
Source: https://www.langchain.com/pricing (checked 2026-10-29). Prices change; confirm with the vendor.
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Model costs
Most agent tools also bill LLM tokens separately. Estimate those with the AI agent cost calculator, browse LLM API prices, or see more observability tools in the directory.
Alternatives
- Langfuse from $29/mo
- Helicone from $79/mo
- Braintrust from $249/mo
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