langchain-ai/langchainjs langchain@1.2.26

on GitHub

Patch Changes

• #10108 e7576ee Thanks @hntrl! - fix: replace retired Anthropic model IDs with active replacements

  • Update default model in ChatAnthropic from claude-3-5-sonnet-latest to claude-sonnet-4-5-20250929
  • Regenerate model profiles with latest data from models.dev API
  • Replace retired claude-3-5-haiku-20241022, claude-3-7-sonnet-20250219, claude-3-5-sonnet-20240620, and claude-3-5-sonnet-20241022 in tests, docstrings, and examples

• #10114 0050c91 Thanks @christian-bromann! - fix(langchain): reset shared currentSystemMessage on middleware handler retry