ca246ddef2
## Summary - Replace `claude-3-5-haiku-20241022` and `claude-3-7-sonnet-20250219` with `claude-haiku-4-5-20251001` and `claude-sonnet-4-5-20250929` respectively - Both models were retired by Anthropic on February 19, 2026, causing all anthropic integration tests to fail - Updates integration tests, a unit test, and docstring examples in `langchain-core` See: https://platform.claude.com/docs/en/docs/resources/model-deprecations
Packages
Important
This repository is structured as a monorepo, with various packages located in this libs/ directory. Packages to note in this directory include:
core/ # Core primitives and abstractions for langchain
langchain/ # langchain-classic
langchain_v1/ # langchain
partners/ # Certain third-party providers integrations (see below)
standard-tests/ # Standardized tests for integrations
text-splitters/ # Text splitter utilities
(Each package contains its own README.md file with specific details about that package.)
Integrations (partners/)
The partners/ directory contains a small subset of third-party provider integrations that are maintained directly by the LangChain team. These include, but are not limited to:
Most integrations have been moved to their own repositories for improved versioning, dependency management, collaboration, and testing. This includes packages from popular providers such as Google and AWS. Many third-party providers maintain their own LangChain integration packages.
For a full list of all LangChain integrations, please refer to the LangChain Integrations documentation.