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Alpha 版本提示： 本文档涵盖的是 v1-alpha 版本。内容尚不完整，且可能随时变更。如需查阅最新稳定版本，请参阅 v0 版本的 LangChain Python 文档 或 LangChain JavaScript 文档。
This page explains the LangChain and LangGraph release policies. Click on the tabs below to view the release policies for each:
  • LangChain
  • LangGraph
The LangChain ecosystem is composed of different component packages (e.g., langchain-core, langchain, langchain-community, partner packages, etc.)

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Release cadence

We expect to space out minor releases (e.g., from 0.2.x to 0.3.0) of langchain and langchain-core by at least 2-3 months, as such releases may contain breaking changes.Patch versions are released frequently, up to a few times per week, as they contain bug fixes and new features.

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API stability

The development of LLM applications is a rapidly evolving field, and we are constantly learning from our users and the community. As such, we expect that the APIs in langchain and langchain-core will continue to evolve to better serve the needs of our users.
  • Breaking changes to the public API will result in a minor version bump (the second digit)
  • Any bug fixes or new features will result in a patch version bump (the third digit)
We will generally try to avoid making unnecessary changes, and will provide a deprecation policy for features that are being removed.

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Stability of other packages

The stability of other packages in the LangChain ecosystem may vary:
  • langchain-community is a community maintained package that contains 3rd party integrations. While we do our best to review and test changes in langchain-community, langchain-community is expected to experience more breaking changes than langchain and langchain-core as it contains many community contributions.
  • Partner packages may follow different stability and versioning policies, and users should refer to the documentation of those packages for more information; however, in general these packages are expected to be stable.

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Deprecation policy

We will generally avoid deprecating features until a better alternative is available.When a feature is deprecated, it will continue to work in the current and next minor version of langchain and langchain-core. After that, the feature will be removed.Since we’re expecting to space out minor releases by at least 2-3 months, this means that a feature can be removed within 2-6 months of being deprecated.In some situations, we may allow the feature to remain in the code base for longer periods of time, if it’s not causing issues in the packages, to reduce the burden on users.