LangChain
Open SourceOpen-source framework for building applications powered by large language models.
Employees
50-150
Funding
$35M+
Valuation
$300M
Status
Private
About LangChain
LangChain is the most widely used open-source framework for building applications powered by large language models. The framework provides tools for chaining LLM calls, managing prompts, integrating with external data sources, and building AI agents. LangChain's ecosystem includes LangSmith for LLM observability and debugging, LangGraph for building stateful AI agents, and LangServe for deploying chains as APIs. The framework supports all major LLM providers and has become the de facto standard for LLM application development, with a massive community of developers contributing integrations and templates.
Key People
Harrison Chase
CEO & Co-Founder
Ankush Goel
Co-Founder
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