Changes since langchain==1.2.11
release(langchain_v1): 1.2.12 (#35770)
feat: tracing for wrap model + tool call (#35765)
langchain==1.2.12
LangChain Releases / 3/12/2026
📰 NewsDeveloper Stack & InfrastructureTools & Practical Usage
Key Points
- LangChain released version 1.2.12 following 1.2.11.
- The release adds tracing for wrap model and tool calls, enhancing observability and debugging.
- The changes reference pull requests #35770 and #35765.
- This tracing improvement helps developers monitor how models are wrapped and how tools are invoked within LangChain workflows.
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