langchain

langchain-groq 1.1.3 introduces Strict Mode for Groq and adds content-block-centric streaming functionality (v2). The release includes new standard model properties and enhanced profile fields. It addresses a medium-severity security vulnerability (CVE-2026-4539) and updates several dependencies including langchain-core and langsmith. An upgrade is recommended with no breaking changes expected.

LangChain 1.3.5 adds AND-capable trigger conditions to SummarizationMiddleware and introduces apply_patch built-in tool support for OpenAI. Dependencies pyarrow and aiohttp are affected. The update maintains backward compatibility without breaking changes or security issues. For operators, this represents a routine update with enhanced functionality.

langchain-deepseek 1.1.0 introduces content-block-centric streaming (v2) and model profiles with text_inputs and text_outputs fields. A base_url alias for api_base simplifies configuration. Model profile data is now distributed across packages. A medium-severity CVE-2026-4539 affects this release. No breaking changes, but upgrade recommended due to the security vulnerability.

LangChain 1.3.3 enhances subagent functionality by adding a typed channel for project subagent runs and introduces interrupt_mode and when predicate parameters to HumanInTheLoopMiddleware. The changes also affect the LangGraph dependency. For operators, this is a routine update without breaking changes or security issues, providing new workflow configuration options.