LangSmith Pricing Guide: Developer, Plus & Enterprise Plans for AI Teams


LangSmith Pricing Guide


Introduction

LangSmith is the official observability, testing, and evaluation platform for LangChain-powered LLM applications. Whether you're a solo developer, startup, or enterprise team, LangSmith provides visibility into agent execution, dataset quality, trace tracking, and prompt management.

This article offers a comprehensive overview of LangSmith pricing, breaking down each tier—Developer, Plus, Enterprise—and helping you determine the right plan for your needs.

What Is LangSmith?

LangSmith empowers AI builders with:

  • Trace logging (for chains, agents, tools, evaluators)

  • Prompt management and versioning

  • Test dataset creation & evaluation

  • Monitoring and observability

  • Extended trace retention and feedback management

  • Support for team collaboration and security compliance

It’s a foundational tool for production-grade LLM applications.



Developer Plan (Free)

Ideal For:

Hobbyists, individual developers, open-source contributors.

Features:

  • 1 developer seat

  • 5,000 free traces/month

  • Pay-as-you-go beyond free limit

  • 14-day base trace retention

  • Dataset creation and debugging

  • Prompt testing and evaluation

  • Monitoring dashboard

Trace Overage:

  • Base traces: $0.50 per 1,000

  • Extended traces: $5.00 per 1,000

  • Upgrade base → extended: $4.50 per 1,000

Great for getting started with LangChain + LangSmith without any upfront cost.

Plus Plan ($39/User/Month)

Ideal For:

Startup teams and AI engineers collaborating on shared projects.

Features (Includes all Developer features):

  • $39 per user/month (max 10 seats)

  • 10,000 traces per user/month

  • Up to 3 workspaces per organization

  • Faster rate limits and increased event throughput

  • Email-based support

  • Enhanced monitoring and logging

Performance Limits:

  • Ingested events/hour: up to 500K

  • Total trace size/hour: up to 5GB

  • Pay-as-you-go trace pricing beyond quotas

If you need collaborative workspaces, higher performance ceilings, and team analytics, Plus is the right fit.



Enterprise Plan (Custom Pricing)

Ideal For:

Enterprises with security, compliance, scaling, and deployment requirements.

Features (All Plus features, plus):

  • Custom Single Sign-On (SSO)

  • Up to 10+ workspaces per organization

  • Role-Based Access Control (RBAC)

  • Dedicated Slack support & customer success manager

  • Deployment options:

    • Hosted in US/EU

    • Self-hosted in customer’s VPC (AWS, GCP, Azure)

  • SLA-backed uptime guarantees

  • SOC 2 Type II, HIPAA, GDPR compliant

  • Business Associate Agreement (BAA) available

  • Annual invoicing & procurement flexibility

Usage & Performance:

  • Custom trace volumes, ingestion caps, and retention

  • Slack onboarding, team training, and cognitive architecture reviews

  • Full data ownership—LangChain never trains on your data

Contact sales@langchain.dev for a tailored quote or demo.

Pricing Summary

Feature Developer Plus ($39/user) Enterprise (Custom)
Seats 1 Up to 10 Unlimited
Traces Included 5,000/month 10,000/month Custom
Trace Overage (Base) $0.50 / 1,000 $0.50 / 1,000 Custom
Extended Traces (400d) $5.00 / 1,000 $5.00 / 1,000 Custom
Workspaces 1 Up to 3 Up to 10+
SSO Support Google, GitHub Google, GitHub Custom SSO
Deployment US/EU Hosted US/EU Hosted Hosted or self-hosted
SLA / Support Level Community Email Dedicated, SLA-backed
Security Compliance No No SOC 2 II, HIPAA, GDPR
Billing Monthly Monthly Annual invoice

What Are Traces?

A trace represents a full execution instance of your app's LLM-based chain, agent, or evaluator. Traces may contain many tool calls, prompts, or model invocations.

LangSmith charges per trace to keep pricing fair for teams building complex AI systems. You are not penalized for trace complexity.



Base vs. Extended Traces

Trace Type Retention Cost per 1,000 Use Case
Base 14 days $0.50 Debugging, short-lived runs
Extended 400 days $5.00 Labeled data, feedback-rich traces
Upgrade — $4.50 Convert base → extended

LangSmith lets you automatically or manually upgrade traces with valuable annotations, evaluations, or user feedback for long-term retention.

Billing and Payments

  • Developer & Plus plans: billed monthly, self-serve

  • Enterprise: annual invoice, ACH supported

  • Unused seats are not refunded

  • Credit system available for tracing overages

  • Alerts and auto-top-up for usage caps

Support & Data Privacy

Plan Support Data Storage Compliance
Developer Community Discord GCP (us-central-1) Basic
Plus Priority email support GCP (us-central-1) -
Enterprise Slack + CSM + monthly reviews Self-host or GCP/AWS/Azure SOC 2 II, HIPAA, GDPR, BAA

Choosing the Right Plan

Scenario Recommended Plan
Solo dev exploring LangChain Developer
AI team building production prototypes Plus
B2B SaaS, fintech, or healthcare org Enterprise

Conclusion

LangSmith pricing is flexible and usage-based, designed to support individual developers and scale with teams as they grow from prototype to production. With transparent per-trace billing, robust collaboration tools, and enterprise ready features, LangSmith ensures observability never becomes a bottleneck in your AI development journey.

Whether you're debugging a single agent or scaling LLM pipelines across teams, there's a LangSmith plan designed to match your workflow and budget.