AI Tool
LangSmith pricing, features, company info, and alternatives
A factual product page for LangChain's agent observability platform.
Last updated April 2026 · Pricing and features verified against official documentation
Pricing
Current public pricing tiers on file for LangSmith, last verified Apr 21, 2026.
Developer
$0 / seat/month
Includes one seat and pay-as-you-go trace usage after the included quota.
Plus
$39 / seat/month
Includes additional seats, higher trace quotas, and one dev-sized deployment.
Enterprise
Custom pricing
Adds hybrid and self-hosted options, custom SSO and RBAC, support SLAs, and custom seats.
What You Can Do With It
The main capabilities that shape how people use LangSmith today.
Traces agent runs step by step in the web UI, with prompts, tool calls, outputs, and metrics captured in each trace.
Supports online and offline evals, prompt hub workflows, playground testing, annotation queues, monitoring, and alerts.
Works with Python, TypeScript, Go, and Java SDKs, plus a REST API and CLI for scriptable access.
Offers cloud, BYOC, hybrid, and self-hosted deployment options for teams with data residency or security constraints.
Best For
Who LangSmith is most clearly built for.
Teams that need tracing, evaluation, and deployment in one agent engineering platform.
Developers building with mixed agent stacks who want framework-agnostic observability.
Organizations that need self-hosted or hybrid options for compliance and data residency.
Company
Leadership and company context for LangChain, Inc..
CEO
Harrison Chase
Founders
Harrison Chase, Ankush Gola
Headquarters
San Francisco, CA, USA
Platforms
Where you can use LangSmith today.
Web
API
CLI
Integrations
Notable connected tools and ecosystem hooks for LangSmith.
LangChain
LangGraph
OpenAI
Anthropic
CrewAI
Vercel AI SDK
Pydantic AI
OpenTelemetry
Privacy Notes
Publicly stated data-handling notes that matter when evaluating LangSmith.
LangChain says it will not use customer data to train or improve its products.
The privacy policy says LangSmith is provided as a business service and that LangChain processes service data under that policy.
LangSmith supports cloud, hybrid, and self-hosted deployment modes, and the docs say enterprise customers can keep data in their own environment.
Compliance
Public compliance or enterprise-governance signals we found for LangSmith.
HIPAA
SOC 2 Type 2
GDPR
Access
How to integrate or build around LangSmith.
Public API
Yes
Docs
Available
Alternatives
Other tools worth considering alongside LangSmith.
Open-source platform for building AI apps, agents, and RAG workflows.
Microsoft's low-code agent builder for internal and external Copilot workflows.
Workflow automation platform for building AI agents and integrations with code or low-code.
Visual AI workflow automation platform for connecting apps, data, and agents.
Product Snapshot
LangSmith is LangChain’s platform for developing, debugging, evaluating, and deploying AI agents and LLM applications. It is aimed at developers and teams that want observability and deployment tools in the same workflow.
What You Can Do With It
- Trace agent runs in the web UI and inspect prompts, tool calls, outputs, and timings.
- Run online and offline evaluations, manage annotation queues, and track monitoring and alerts.
- Use the REST API, CLI, and SDKs to query and manage projects, traces, runs, datasets, evaluators, experiments, and threads.
- Choose cloud, hybrid, or self-hosted deployment modes when data residency or security requirements matter.
Why It Stands Out
It combines observability, evaluation, and deployment in one platform, with support for both hosted and self-hosted operating models.
Tradeoffs To Know
- The free Developer plan is limited to one seat and includes pay-as-you-go trace usage after the included quota.
- Hybrid and self-hosted deployment options are reserved for Enterprise customers.
- Teams that only need a narrow observability layer may not use the full platform surface.
Changes to this tool page
- April 2026 Initial draft built from LangChain's official pricing, docs, privacy policy, and company pages.
Sources
- langchain.com/pricing
- langchain.com/about
- langchain.com/privacy-policy
- langchain.com/blog/join-langchain-at-google-cloud-next-2026
- blog.langchain.com/announcing-langsmith
- blog.langchain.com/langsmith-ga
- docs.langchain.com/langsmith
- docs.langchain.com/oss/javascript/langchain/observability
- docs.langchain.com/langsmith/sdk
- docs.langchain.com/langsmith/self-hosted
- docs.langchain.com/langsmith/langsmith-fetch
- docs.langchain.com/langsmith/architectural-overview
- docs.langchain.com/langsmith/shared-responsibility-model
- docs.langchain.com/langsmith/create-account-api-key