LangSmith Costs

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Platform for observing, evaluating and deploying AI agents with tracing, monitoring, evaluations and deployment, independent of the agent framework.

LangSmith Pricing

Last edited: October 2026

Developer
0.00 $/ User / month
For solo users getting started. One free seat, usage beyond the allowance is billed pay as you go once a card is added.
1 seat
Up to 5k base traces per month included, then pay as you go
Tracing, monitoring and online and offline evals
Datasets, annotation queues, Prompt Hub and Playground
LangSmith Studio
Fleet with 7 LSU per month included
Sandboxes with 8 LSU per month included, up to 10 sandboxes
LLM Gateway with model usage via Gateway Credits
Community forum and support portal
Plus
39.00 $/ User / month
For teams building and deploying agents. Monthly self-serve billing, usage beyond the allowances is billed pay as you go.
Unlimited seats
Up to 10k base traces per month included, then 0.005 LSU per additional trace
Access to Deployment and Engine
1 free Serverless (Small) deployment, more billed on resources consumed
Insights, Tuned Evaluators and unlimited agents
Fleet with 37 LSU per month included
Sandboxes with 8 LSU per month included, then billed per second
LLM Gateway with cost and rate limiting controls
Organization roles for users and admins
Cloud hosting fully managed by LangChain in the US or EU
Community forum and support portal
Enterprise
Upon request
For teams with advanced hosting, security and support needs. Invoiced annually upfront, usage is charged against committed LangChain credits.
Cloud, hybrid or self-hosted in a private VPC
Custom SSO, ABAC and RBAC
Support SLA
Custom seats and workspaces
Custom allowances for traces, Deployment, Engine, Fleet and Sandboxes
Email and Slack support
Team trainings and architectural guidance
Access to deployed engineers
Custom terms and infosec review

Demo version

All prices in US dollars. Developer and Plus include monthly allowances, beyond which traces, deployments, Engine, Fleet and Sandboxes are billed by usage in LangChain Standard Units (1 LSU = USD 1). Discounted rates are available for VC-backed startups. The provider's pricing page prevails.

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