Project AI

langchain-core==

Releases tracked

15 days

Avg cadence

Jun 2026

First tracked

8d ago

Latest

Release history

Resolves tool schema serialization issues, adds standard exception types, and improves Windows compatibility in langchain-core

Langchain-core 1.5.4 fixes Pydantic 2.14 compatibility, stops StructuredPrompt from mutating caller kwargs, and preserves tool argument schemas

Adds reasoning effort as a standard chat-model parameter

Langchain-core 1.4.8 memoizes tool schemas, caches JSON schemas, preserves token usage in streaming, and drops Python 3.9 support

LangChain Core deprecated the problematic dict() method to encourage use of safer serialization patterns in LLM application chains

Removes Bedrock prevalidation from load path; Bumps uuid-utils to 0.16.0