LangChain
AI Agents & Automation
Overview
LangChain is an open-source framework for building LLM applications and AI agents, offering composable chains, agents, tools, retrievers, and more than 1,000 integrations across model providers, data systems, vector databases, and external APIs. It provides a unified interface for connecting language models to data sources and tools, enabling developers to build sophisticated AI applications with memory, retrieval, and multi-step reasoning capabilities.
- Pricing model
- Free
- Deployment
- SaaS (vendor-hosted), Self-hosted / on-premises, API / SDK, CLI / IDE plugin
- Regions served
- Global
- Categories
- Language (LLM / NLP), Process automation, CLI / IDE plugin, Free, Subscription, Software & technology, Workflow orchestration, API / SDK, Self-hosted / on-premises, Agent framework / SDK, SaaS (vendor-hosted), Retrieval & semantic search, AI Agents & Automation, Agentic / autonomous, Enterprise / custom quote
- Last updated
- 2 October 2026
- Published
- 2 October 2026
Use cases
Deployment options
Data sources & provenance
Where this information came from, how it was checked and when it was last looked at. “Last updated” records a change to the record — it does not mean the record was verified.
- Data quality
- Data quality: Editorially Reviewed
- Primary source
- langchain.com
- Sources cited
- 2
- Last reviewed
- 28 September 2026
- Last updated
- 2 October 2026
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