Categories / LangChain (LangSmith)
LangChain (LangSmith)
Visit Website ↗LangSmith, from the makers of LangChain, is a platform to trace, evaluate and deploy LLM agents. The open-source LangChain framework itself is free.
Prices may change. These are correct as of 10 Nov 2026. Please confirm on the vendor's own page before you pay.
Verified. Seat prices confirmed on LangChain's pricing page; trace overage is usage-based and billed in arrears.
Free plan
Free plan: 5,000 traces per month. Developer plan: 1 seat and 5k base traces per month; extra traces are pay-as-you-go once a card is added.
Plans and prices (USD)
Swipe the table sideways to see what each plan includes.
| Plan | Billed monthly | Yearly, per month | What it includes |
|---|---|---|---|
| Developer per per seat per month |
$0 | not recorded |
|
| Plus per per seat per month |
$39 | not recorded |
|
"Not recorded" means we did not find that price, not that it is free. Prices exclude tax and can differ by country.
Where it may fit
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Taken from what the vendor says the tool does. We have not tested it.
What to watch
- Trace overage is pay-as-you-go and can add up
- Enterprise is custom
- Fleet and Sandboxes usage is metered separately
Sources
- LangSmith pricing (checked 10 Nov 2026)
- Usage and billing docs (checked 10 Nov 2026)
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