LangChain langchain-core==1.5.4 is out. Here's what changed:
Changes since langchain-core==1.5.3
release(core): 1.5.4 (#39592) fix(core): compat with pydantic 2.14 (#39328) fix(core): stop StructuredPrompt from mutating caller kwargs (#39174) fix(core): preserve flat tool args schema for RootModel runnables (#39307) fix(core): close internally created event loops in streaming tracers (#39222) chore: bump the minor-and-patch group across 3 directories with 7 updates (#39187) fix(core): preserve OpenAI file blocks (#39205) fix(core): document reserved ar
Sourced from GitHub Releases. Published 2026-08-11.