LangChain .NET is a C# implementation of the LangChain framework that enables developers to build LLM-powered applications using the .NET ecosystem. The project aims to replicate the core abstractions of LangChain, such as chains, agents, and vector stores, while adapting them to the conventions and strengths of C#. It emphasizes composability, allowing developers to build complex workflows by combining modular components that interact with language models and external data sources. The framework supports integration with multiple providers, including OpenAI and other compatible APIs, and includes tools for embeddings, document loading, and vector database interaction. It also provides both low-level async APIs and higher-level chain abstractions, giving developers flexibility in how they structure their applications. With built-in support for retrieval-augmented generation and structured pipelines, LangChain .NET is designed for production-ready AI systems.

Features

  • C# implementation of LangChain abstractions
  • Composable chains and pipeline architecture
  • Integration with multiple LLM providers
  • Async APIs and high-level chain workflows
  • Vector database and embedding support
  • Document loaders for structured data ingestion

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License

MIT License

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Additional Project Details

Programming Language

C#

Related Categories

C# Libraries

Registered

2026-04-20