LangChain
LangChain is an open-source framework designed to simplify the development of applications powered by large language models (LLMs). It provides modular components and tools to chain together various LLM calls, data sources, and other computational steps, enabling the creation of complex…
Key facts
- First appeared
- 2022
- Category
- technology
- Problem solved
- LangChain was created to abstract away the complexity of building sophisticated applications with large language models, offering standardized interfaces and reusable components for tasks such as chaining prompts, integrating external data (RAG), enabling agentic behavior, and managing conversational state. Before LangChain, developers had to custom-build these orchestration layers from scratch, leading to repetitive code and increased development time.
- Platforms
- JavaScript/TypeScript, Any OS supporting Python or Node.js (Linux, macOS, Windows), Python (primary)
Related technologies
Notable users
- Startups in the AI/ML space
- Individual developers and researchers
- Enterprises experimenting with generative AI