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20 lines
700 B
Markdown
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# Modules
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LangChain provides standard, extendable interfaces and external integrations for the following modules, listed from least to most complex:
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#### [Model I/O](/docs/modules/model_io/)
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Interface with language models
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#### [Data connection](/docs/modules/data_connection/)
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Interface with application-specific data
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#### [Chains](/docs/modules/chains/)
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Construct sequences of calls
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#### [Agents](/docs/modules/agents/)
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Let chains choose which tools to use given high-level directives
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#### [Memory](/docs/modules/memory/)
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Persist application state between runs of a chain
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#### [Callbacks](/docs/modules/callbacks/)
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Log and stream intermediate steps of any chain |