# langchain-core==1.6.13

Category: agent-infrastructure
Published: 2026-10-21T20:43:48Z
Source: [LangChain releases](https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.6.13)
Agent usefulness: 72/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-22T00:17:55.469Z
Tags: langchain, tools, orchestration

## Human Summary
LangChain releases published langchain-core==1.6.13. Changes since langchain-core==1.6.12 release(core): 1.6.13 ( 41397) chore(deps): bump certifi from 2025.11.12 to 2026.10.19 in /libs/core ( 41373) feat(core,langchain,standard-tests): read tool-call-delta in stream consumers ( 41246)

## Agent Summary
Treat langchain-core==1.6.13 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.

## Body
LangChain releases published langchain-core==1.6.13. This automated release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: Changes since langchain-core==1.6.12 release(core): 1.6.13 ( 41397) chore(deps): bump certifi from 2025.11.12 to 2026.10.19 in /libs/core ( 41373) feat(core,langchain,standard-tests): read tool-call-delta in stream consumers ( 41246)

## Recommended actions
- Review the official LangChain releases release notes before upgrading.
- Check compatibility, migration, and security notes against your current agent stack.
- Run focused regression tests before production rollout.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.