LangChain Pricing
Every LangChain plan with its monthly and annual price, what it costs for common team sizes, and a calculator to estimate your own monthly cost before you buy.
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Plans and prices
| Plan | Monthly billing | Annual billing (per month) | Per user or flat | Users | Free tier |
|---|---|---|---|---|---|
| Developer | Free | Free | — | 1 users | Yes |
| Plus | $39/user/mo | Not listed | Per user | No limit listed | No |
| Enterprise | Contact sales | Contact sales | — | No limit listed | No |
Prices last updated November 2026.
What each LangChain plan includes
Developer
- 1 seat
- Community support
- Google or GitHub SSO
- Monthly self-serve billing
- 5k base traces per month included
- 7 LSU per org per month Fleet allowance; runs pause when used up
Plus
Everything in Developer, plus:
- Unlimited seats at $39 each
- Tuned Evaluators public beta
- 1 free small serverless Agent Server deployment
- 10k base traces per month included, pay-as-you-go beyond
- Access to Agent Server and Engine (Engine metered in LSUs)
- 37 LSU per org per month Fleet allowance, extra usage billed
Enterprise
- Immutable audit trail
- Annual upfront invoicing
- Infosec review and custom terms
- US, EU or APAC SaaS data residency
- Custom seats, traces and workspaces
- Custom SAML SSO, SCIM, RBAC and ABAC
- Self-hosted, hybrid or BYOC deployment
- Support SLA, deployed engineers and architecture guidance
What LangChain costs by team size
| Team size | 1 user | 5 users | 10 users | 25 users | 50 users |
|---|---|---|---|---|---|
| Monthly cost | FreeDeveloper | $195/moPlus | $390/moPlus | $975/moPlus | $1,950/moPlus |
The plan that fits each team size, billed monthly, before add-ons and usage charges.
Add-ons
| Add-on | Monthly billing | Annual billing (per month) | Charged |
|---|---|---|---|
| Extended trace retention upgradeUpgrades base traces, kept 14 days, to extended traces kept 180 days. Billed as metered usage. | Not listed | Not listed | Per trace |
| LangSmith Units (LSU)Metered units that pay for Fleet agent runs, Engine runs, sandboxes, Agent Server compute and Tuned Evaluators beyond plan allowances. | Not listed | Not listed | Per LSU |
| LLM Gateway creditsPay-as-you-go credits for model calls routed through the LangSmith LLM Gateway, which adds spend controls. | Not listed | Not listed | Per gateway credit |
LangChain Pricing Calculator
Estimate your team's real monthly and annual cost based on seats, billing cycle, and add-ons.
Cost breakdown
Estimated from the vendor's published prices, last updated November 2026. Actual costs may vary based on negotiated contracts. How we collect prices
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LangChain pricing FAQs
The LangChain, LangGraph and Deep Agents frameworks are open source and free. The paid part is LangSmith, which has a free Developer plan for one seat with 5k base traces a month. Plus costs $39 per seat per month, and Enterprise is priced by sales.
Each plan includes base traces, 5k on Developer and 10k on Plus, and overage is pay-as-you-go. Base traces are kept 14 days. You can pay to upgrade them to extended retention. Agent Server compute, sandboxes, Engine and Fleet runs are metered in LangSmith Units. The public pricing page does not give a dollar rate per trace.
Yes, LangChain has a free plan: Developer, for up to 1 user.
LangChain's Developer plan includes 1 seat, Community support, Google or GitHub SSO, Monthly self-serve billing, 5k base traces per month included and 7 LSU per org per month Fleet allowance; runs pause when used up. It allows up to 1 user.
LangChain lists 3 plans, including a free plan. The cheapest paid plan is Plus, at $39/user/mo billed monthly.
LangChain's Plus plan, at $39/user/mo billed monthly, includes everything in the Developer plan, plus Unlimited seats at $39 each, Tuned Evaluators public beta, 1 free small serverless Agent Server deployment, 10k base traces per month included, pay-as-you-go beyond, Access to Agent Server and Engine (Engine metered in LSUs) and 37 LSU per org per month Fleet allowance, extra usage billed.
LangChain costs about $390/mo for 10 users on its Plus plan, billed monthly, before add-ons and usage charges.
Yes. Every LangChain paid plan with a listed price charges per user, so the cost grows with your team.
Yes. LangChain sells add-ons on top of its plans: Extended trace retention upgrade, LangSmith Units (LSU) and LLM Gateway credits.