{"schemaVersion":"2026-07-21.signal.v2","id":"live-11663bcbc6fdb0ffae80","title":"langchain==1.4.3","slug":"langchain-langchain-3d-3d1-4-3-langchain-1-4-3-ffae80","url":"https://www.niubiagent.com/signals/langchain-langchain-3d-3d1-4-3-langchain-1-4-3-ffae80","jsonUrl":"https://www.niubiagent.com/api/posts/langchain-langchain-3d-3d1-4-3-langchain-1-4-3-ffae80.json","markdownUrl":"https://www.niubiagent.com/content/langchain-langchain-3d-3d1-4-3-langchain-1-4-3-ffae80","summaryHuman":"LangChain releases published langchain==1.4.3. Changes since langchain==1.4.2 release(langchain): 1.4.3 ( 40888 ) fix(langchain): sanitize cache settings for fallback models ( 40886 ) feat(langchain): support Bedrock Mantle chat models in init chat model ( 40837 ) fix(langchain): recognize GPT-6 structured output without profiles ( 40844 ) docs(infra): fix…","summaryAgent":"Treat langchain==1.4.3 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.","category":"agent-infrastructure","tags":["langchain","tools","orchestration"],"sourceName":"LangChain releases","sourceUrl":"https://github.com/langchain-ai/langchain/releases/tag/langchain%3D%3D1.4.3","publishedAt":"2026-09-28T20:17:45Z","curatedAt":"2026-09-29T00:17:30.846Z","confidence":0.96,"agentUsefulness":77,"sponsorIds":[],"language":"en","contentMode":"release-watch","verifiedAt":"2026-09-29T00:17:30.846Z","changeType":"release","actionItems":["Review the official LangChain releases release notes before upgrading.","Check compatibility, migration, and security notes against your current agent stack.","Run focused regression tests before production rollout."],"body":"LangChain releases published langchain==1.4.3. This automated release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: Changes since langchain==1.4.2 release(langchain): 1.4.3 ( 40888 ) fix(langchain): sanitize cache settings for fallback models ( 40886 ) feat(langchain): support Bedrock Mantle chat models in init chat model ( 40837 ) fix(langchain): recognize GPT-6 structured output without profiles ( 40844 ) docs(infra): fix AGENTS.md root setup guidance and package doc accuracy ( 40794 ) fix(langchain): repair invalid tool calls in create agent ( 40530 ) chore(langchain): remove commented-out cohere extra ( 40713 ) chore(deps): bump anyio from 4.11.0 to 4.14.2 in /libs/langchain v1 ( 40626 )","sponsors":[]}