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pypi / langchain-anthropic

langchain-anthropic

What changed in langchain-anthropic 1, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-19.

1 security1 new APIs and options1 behavior and defaults3 fixes and other

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langchain-anthropic 16 changes

Security 1

  • LangChain: Path traversal and sandbox escape in LangChain file-search middleware and loaders

    1.4.6security advisory

New APIs and options 1

  • Model profiles now declare mid-conversation support, helping developers determine whether a model supports it.

    1.7.6release notes

Behavior and default changes 1

  • Tool changes can now occur mid-conversation on SystemMessage.

    1.7.4release notes

Fixes and other changes 3

  • Adds compatibility with Claude Sonnet 5.5.

    1.7.5release notes

  • Invalid tool calls are serialized as tool use during replay.

    1.7.5release notes

  • Adds Opus 5.5 and GPT-6 profile augmentations.

    1.7.4release notes