LangChain pricing guide details
Pricing Overview
The LangChain framework is MIT-licensed software with no licence charge. LangSmith is a separate commercial service for tracing, evaluation and agent operations; using LangChain in production does not require a paid LangSmith seat. LangSmith Developer is $0/seat/month plus usage for one seat. Plus is $39/seat/month plus usage; Enterprise is custom. A seat price alone is not the total platform bill.
Plan Comparison
LangSmith offers three distinct tiers designed to scale from solo developers to large enterprise teams.
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| Pricing condition | Developer | Plus | Enterprise |
|---|---|---|---|
| Seat price per month | $0 | $39 | Custom |
| Seats | 1 | Additional paid seats | Custom |
| Included base traces per month | 5,000 | 10,000 | Custom |
| Usage beyond included base traces | Pay as you go | Pay as you go | Custom |
| Deployment | Not included | One small serverless deployment included; additional resources are metered | Custom |
| Advanced hosting and security | Confirm requirements | Confirm requirements | Self-hosted/hybrid options, custom access controls and support SLA |
Choose Developer for a single seat when its included services fit. Choose Plus when you need additional seats or hosted deployment. Discuss Enterprise for custom hosting, access controls or support requirements. Measure traces and service usage before choosing a plan; team size alone does not establish how quickly an allowance will be consumed.
Hidden Costs and Considerations
Budget for seats and the services you actually use. Tracing, deployment resources and other services have their own allowances and meters. Model billing depends on the route: calls billed to your own provider account are separate, while LangSmith's LLM Gateway uses pay-as-you-go Gateway Credits. Confirm the applicable service terms rather than assuming every model call is included or every model charge appears on a separate provider bill.
Seat-Only Example
Three Plus seats cost 3 × $39 = $117/month in seat charges. This is a partial example, not a workload estimate: it excludes metered usage, additional deployment resources and model charges. A different trace volume or service mix changes the bill without changing the number of seats. There is no published basis here for assuming model charges dominate every production bill.
How LangChain Pricing Compares
LangSmith's pricing sits in a competitive position among AI development platforms, though direct comparisons are tricky since each tool targets a slightly different use case.
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| Tool | Starting Price | Pricing Model | Best For |
|---|---|---|---|
| LangChain (LangSmith) | $0/seat (free tier) | Per-seat + usage-based | Agent observability, evaluation, deployment |
| Clam | Active: $50/month | Monthly subscription plus AI-provider usage | Hosted runtime; Busy $75/month, Super Busy $150/month, Enterprise custom |
| ProxyBase | — | Usage-based (per GB) | Data-centric workloads |
These services meter different work. LangSmith's $0 Developer seat does not include hosted deployment or unlimited usage. Clam includes a hosted agent runtime; AI-provider usage is separate. Compare the required capability and operating responsibility before comparing entry prices. Sources: LangChain licence, LangSmith pricing, checked October 22, 2026, and Clam pricing. Clam's indexed official pricing page was checked October 21, 2026; direct retrieval was unavailable, so confirm current commercial terms before purchase.