LangChain

LangChain lets developers create and deploy context-aware, reasoning applications using their own company data and APIs. The service is a collection of products to help developers through the entire LLM application lifecycle, from creation to deployment.

LangChain is good for startups and global companies, with tools to create, monitor and deploy LLM-based applications. The service is built on an extensible foundation that can tap into other APIs and private sources, so applications are future-proof and vendor-agnostic.

Among LangChain's features are:

• Build: A framework to create LLM-based applications quickly, using company data and APIs.
• Observe: LangSmith, which monitors LLM-based application performance so developers can improve quality.
• Deploy: LangServe, a service to serve APIs with built-in support for parallelization, fallbacks, batch, streaming and async operations.

LangChain also includes a library of RAG building blocks, including document loaders, vector stores, embedding models and retrievers. It can handle different document formats and retrieval algorithms, so developers can get the best possible connections between data and infrastructure.

More than 10 million developers download LangChain each month, with more than 50,000 applications created, 75,000+ GitHub stars and 2,000+ contributors. The service has a community of more than 100,000 practitioners who are helping to advance GenAI development.

LangChain can be used in a variety of industries, including financial services, FinTech and technology. The service can help teams improve operational efficiency, discover and personalize, and offer premium products that can be monetized.

LangChain offers several pricing tiers, including a free tier for startups and individual developers, as well as paid tiers starting at $39 per user per month. Enterprise pricing is available for custom pricing, and other features include custom single sign-on, SLA, self-hosted deployment options and more.

For developers who want to build GenAI applications reliably and fast, LangChain is a powerful, scalable service with a strong observability, deployment and community foundation.

Published on June 9, 2024