Build context-aware, reasoning applications with LangChain’s flexible abstractions and AI-first toolkit.
Main OSS libraries:
LangChain(Python)LangChain.js(JavaScript/TypeScript)LangGraph- build language agents as graphs (Python)LangGraph.js- LangGraph in JavaScript (JavaScript/TypeScript)
Products:
LangSmith- the platform for building production-grade LLM applications
OSS extensions:
LangServe- deploy LangChain runnables and chains as a REST API (Python)OpenGPTs- Open-source effort to create a similar experience to OpenAI's GPTs and Assistants API (Python)
Live demos:
ChatLangChain- LangChain-powered chatbot focused on question answering over the LangChain documentation (Python)ChatLangChain.js- ChatLangChain in JavaScript (JavaScript/TypeScript)WebLangChain- LangChain-powered web research chatbot (Python)Open Canvas- Document & chat based UX for writing code or markdown. (TypeScript) (Inspired by OpenAI's "Canvas")
| Section | Description |
|---|---|
| Company Website | LangChain product and company info |
| Python Documentation | Get started with the Python library |
| JavaScript Documentation | Get started with the JavaScript library |