LangChain Pricing in 2026
Every plan LangChain publishes, with the page and date we read it from. Prices we could not find on LangChain's own site are marked "Not published", never guessed.
| Plan | Price | Billing | Limits | Source |
|---|---|---|---|---|
| Developer (LangSmith) | Free | $0 / seat per month; usage billed pay as you go. | 1 seat · Up to 5k base traces / mo, then pay-as-you-go · Community support | langchain.com |
| LangChain framework | Free | Free to use; MIT-licensed open-source library. | Open-source framework | langchain.com |
| Plus (LangSmith) | $39 per month | $39 / seat per month; usage billed pay as you go. | Up to 10k base traces / mo, then pay-as-you-go · Add unlimited seats · 1 free Serverless (Small) deployment included | langchain.com |
| Enterprise (LangSmith) | Not published | Custom pricing; Enterprise plans are invoiced annually upfront. | Self-hosted and hybrid deployment options · Custom SSO, ABAC, and RBAC · Support SLA · Custom seats and workspaces | langchain.com |