LangChain OSS(@LangChain_OSS):New langchain python release! 🚀 Highlights: • Internal middleware model calls no longer leak into messages / event stream (https://t.co/Lo8qApxQSK, reported by https://t.co/scDwU9utvW) • SummarizationMiddleware retries failed summaries (reported by https://t.co/OfLv1RyfTA) + faster token counting for tool schemas • Batch of langchain-anthropic bug fixes (https://t.co/Dj0KMFwHiz, https://t.co/cvjrIl12hD) • OpenRouter preserves provider info in response metadata (https://t.co/tFTd6T9wAJ) This release also includes cross-provider standardization of reasoning effort, including supported values per-model in model.profile: https://t.co/yRbFxgQhU0 Huge thanks to our external contributors for helping to shape and improve our harness!

2026.08.11 19:26

New langchain python release! 🚀 Highlights: • Internal middleware model calls no longer leak into messages / event stream ( reported by • SummarizationMiddleware retries failed summaries (reported by + faster token counting for tool schemas • Batch of langchain-anthropic bug fixes ( • OpenRouter preserves provider info in response metadata ( This release also includes cross-provider standardization of reasoning effort, including supported values per-model in model.profile: Huge thanks to our external contributors for helping to shape and improve our harness!