Organization

LangChain

Developer platform · Enterprise software · San Francisco, California

LangChain develops the open-source LangChain, LangGraph, and Deep Agents frameworks for building LLM agents. It also sells LangSmith, a commercial platform for tracing, evaluating, and deploying agents.1 3

Last reviewedSep 29, 2026Entry updated Sep 29, 2026

Key facts

Website: langchain.com (external site: langchain.com)
Legal name: LangChain Inc.2
Ownership: Privately held
Legal form: Delaware corporation2
Headquarters: San Francisco, California1
Other documented locations: New York, New York1; Boston, Massachusetts1; Amsterdam, Netherlands1
Founded: 20231
Sectors: Agents, Enterprise
Careers: Careers page (external site: langchain.com)

What is and isn’t public

An evidence-based summary of what this catalog has documented. It is not a verdict on the organization as a whole.

LangChain says it builds open-source frameworks (LangChain, LangGraph, and Deep Agents) and sells LangSmith, its commercial platform, alongside them. This catalog assesses openness project by project (see the LangChain framework and LangGraph records), not for the company as a whole.1 4

Products

Documented products and how they are delivered. Each row links to the official page.

No hosted model products are recorded for this organization.

Other products

LangChain: other products
Product	Kind	Documented delivery and access	Reviewed
LangSmith (external site: langchain.com)	Developer tool	Platform for tracing, monitoring, and evaluating agents and LLM applications. The Developer tier is free and the Plus and Enterprise plans are paid; all plans can use LangChain's cloud, and the Enterprise plan adds hybrid and self-hosted deployment.3 4	Sep 29, 2026
LangSmith Deployment (external site: docs.langchain.com)	Developer tool	Managed runtime for running agents in production. The docs say it works with agents built on LangGraph and other frameworks, and that it runs in LangChain's cloud, as a hybrid deployment, self-hosted on Kubernetes (Enterprise plan), or as a standalone Agent Server.5	Sep 29, 2026
LangSmith Fleet (external site: langchain.com)	Enterprise software	No-code agent builder in the LangSmith web app. Agents built with it can run inside tools such as Slack, Teams, and Gmail, and sensitive actions can require human approval.6	Sep 29, 2026

Related open artifacts

Records in the Open Models & Tools directory that list this organization as a maintainer or publisher.

Frameworks (2)

LangChain (framework)SoftwareAvailability: Public
LangGraphSoftwareAvailability: Public

Notable documented facts

According to the company, LangChain began as an open-source side project in late 2022, and the company was formed in early 2023.1

U.S. eligibility

How this record meets the catalog’s published eligibility policy.

Eligible · basis: U.S. headquarters

LangChain's about page says the company is headquartered in San Francisco, with other offices in New York, Boston, and Amsterdam. Its terms of service (updated June 2, 2026) name LangChain Inc., a Delaware corporation, as the provider, with Delaware law and Delaware courts. No foreign parent or headquarters was found.1 2

Assessed Sep 29, 2026

Eligibility policy

Sources

1.
About LangChain: an open platform to own your intelligence (external site: langchain.com)
LangChain · Official page · accessed Sep 29, 2026
2.
Terms of Service (external site: langchain.com)
LangChain · Official page · published Jun 2, 2026 · accessed Sep 29, 2026
3.
LangSmith: Agent & LLM Observability Platform (external site: langchain.com)
LangChain · Official page · accessed Sep 29, 2026
4.
LangSmith Plans and Pricing (external site: langchain.com)
LangChain · Official page · accessed Sep 29, 2026
5.
LangSmith Deployment - Docs by LangChain (external site: docs.langchain.com)
LangChain · Documentation · accessed Sep 29, 2026
6.
Fleet (external site: langchain.com)
LangChain · Official page · accessed Sep 29, 2026

Report a correction Edit this entry

This listing is not an endorsement or a federal approval.