LangSmith

LangSmith is a platform designed for developing, debugging, and deploying language model (LM) applications. It provides comprehensive tools for tracing requests, evaluating outputs, testing prompts, and managing deployments in a unified interface. The platform is framework agnostic, meaning you can use it with or without LangChain's open-source libraries.

Use tool

Pricing

Developer

$/mo

1 seat
5k base traces / mo included
Pay-as-you-go pricing for additional traces
LangSmith Observability & Evaluation: Tracing, Monitoring, Insights (beta), Online and offline evals, Dataset collection, Annotation queue (human feedback)
Prompt Hub and Playground
Google, GitHub SSO
Organization Roles (User and Admin)
Community Slack Support
Monthly, self-serve billing

Plus

$/mo

Includes all features from the Developer plan
Up to 10 seats
10k base traces / mo included
1 free Dev deployment with unlimited node executions
Additional deployments: $0.001/node execution
Additional deployments: $0.0007/min Development deployment uptime
Additional deployments: $0.0036/min Production deployment uptime
Bulk data export
LangSmith Deployment: Expose agent as MCP server, Real-time streaming of intermediary steps and final output, Agent Authorization (beta), 1-Click Deploy
Platform hosting option: Cloud
Infra: Fully managed by LangChain
Data location: LangChain's Cloud (US or EU)
Custom SSO
Email Support
Monthly, self-serve billing

Enterprise

$/mo

Includes all features from the Plus plan
Custom users/seats
Custom traces included and pay-as-you-go thereafter
Custom Node execution cost
Custom Uptime cost
Hourly trace ingestion and trace event limits
LangSmith Deployment: Horizontally-scalable service for production-sized deployments, 30+API endpoints including state and memory, Cron scheduling, Authentication &authorization for LangGraph APIs
Hosting options: Cloud, Hybrid, or Self-Hosted
Infra: Hybrid: SaaS control plane, Self-hosted data plane
Infra: Self-Hosted: Fully self-managed
Data location: Hybrid: LangChain's Cloud (US or EU)
Data location: Self-Hosted: Your VPC
Role-Based Access Control
Support: Team trainings
Support: Architectural guidance for your applications
Support: Access to deployed engineers
Procurement: Custom Terms
Procurement: Infosec Review
Annual invoice billing

Details

Pricing Tier

Freemium

Sponsor

Ad space