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langchain-classic

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Reference documentation for the langchain-classic package.

Work in progress

This page is a work in progress, and we appreciate your patience as we continue to expand and improve the content.

langchain-classic documentation

These docs cover the langchain-classic package. This package will be maintained for security vulnerabilities until December 2026. Users are encouraged to migrate to the langchain package for the latest features and improvements. See docs for langchain