LangChain

LangChain is an open agent engineering platform designed to help companies build, deploy, and manage applications powered by large language models (LLMs). It provides a framework for developing AI agents, allowing users to choose their preferred models and customize the application's harness, context, and memory. The platform emphasizes control and governance over AI intelligence.

The tool supports the entire agent development lifecycle, from initial building to continuous iteration. It offers features for rapid prototyping, testing agent behavior, and deploying applications on infrastructure built for long-running tasks. LangChain also includes monitoring capabilities to track performance, catch regressions, and manage costs in production environments. It aims to provide a comprehensive solution for developing and maintaining LLM-based applications.

Best for

• Developers building AI agents and LLM-powered applications.
• Teams needing to test and validate agent behavior before deployment.
• Organizations requiring monitoring and governance for production AI applications.
• Companies looking to iterate and improve their AI agents based on feedback loops.

Frequently asked questions

What is an agent engineering platform?

An agent engineering platform provides tools and frameworks to build, test, deploy, monitor, and iterate on AI agents, which are applications powered by large language models.

Does LangChain support no-code agent development?

Yes, LangChain offers options to build agents with or without code, including features like Fleet for natural language agent creation.

How does LangChain help with testing agents?

It allows users to debug agent runs with step-by-step tracing, query complex traces, and turn expert reviews into standardized evaluations.

Can LangChain help manage costs and sensitive data?

Yes, it includes features like LLM Gateway to control model calls, spend, and detect sensitive data, along with options for human approval on sensitive agent actions.

How many companies use LangChain?

The website states that over 7,000 active LangSmith customers use the platform, including 5 of the Fortune 10 companies.

Is LangChain open source?

Yes, LangChain provides open-source frameworks for building agents.

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