LangChain is an open-source framework/SDK for composing LLM applications (chains, agents, retrieval) with integrations to many model providers, documented at LangChain’s official docs.
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LangChain
LangChain · Provider credentials configured per integration.
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Editorial overview
Capabilities
- Chains, agents, and tool abstractions
- RAG building blocks
- Provider integrations
Limitations
- Abstraction layers can hide provider-specific behavior
- Versioning differs across Python and JS packages
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