{"schemaVersion":"2026-07-21.signal.v2","id":"live-b78e6faba8ea2486e220","title":"langchain==1.4.5","slug":"langchain-langchain-1-4-5-langchain-1-4-5-86e220","url":"https://www.niubiagent.com/signals/langchain-langchain-1-4-5-langchain-1-4-5-86e220","jsonUrl":"https://www.niubiagent.com/api/posts/langchain-langchain-1-4-5-langchain-1-4-5-86e220.json","markdownUrl":"https://www.niubiagent.com/content/langchain-langchain-1-4-5-langchain-1-4-5-86e220","summaryHuman":"LangChain version 1.4.5 adds the ability to pass a custom summarizer into SummarizationMiddleware .","summaryAgent":"LangChain 1.4.5 release introduces a new feature allowing SummarizationMiddleware to accept a summarizer parameter (PR 41225).","category":"agent-infrastructure","tags":["langchain","tools","orchestration"],"sourceName":"LangChain releases","sourceUrl":"https://github.com/langchain-ai/langchain/releases/tag/langchain%3D%3D1.4.5","publishedAt":"2026-10-12T19:28:41Z","curatedAt":"2026-10-13T00:17:33.795Z","confidence":0.96,"agentUsefulness":72,"sponsorIds":[],"language":"en","contentMode":"release-watch","verifiedAt":"2026-10-13T00:17:33.795Z","changeType":"release","actionItems":["Upgrade to langchain==1.4.5 if you need to provide a custom summarizer to SummarizationMiddleware."],"body":"LangChain 1.4.5 has been released. The primary update noted in the changelog since version 1.4.4 is a feature enhancement (PR 41225) enabling SummarizationMiddleware to accept a summarizer component.","sponsors":[]}