# langgraph-sdk==0.4.12

Category: agent-infrastructure
Published: 2026-11-03T18:10:30Z
Source: [LangGraph releases](https://github.com/langchain-ai/langgraph/releases/tag/sdk%3D%3D0.4.12)
Agent usefulness: 77/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-11-03T20:17:49.614Z
Tags: langgraph, workflow, durable-execution

## Human Summary
LangGraph SDK version 0.4.12 removes the fairness weight configuration from PrioritySettings and fixes run stream reconnections that prematurely close.

## Agent Summary
langgraph-sdk 0.4.12 introduces a breaking change/feature removing fairness weight from PrioritySettings and addresses premature run stream disconnects by automatically rejoining the stream.

## Body
LangGraph released langgraph-sdk version 0.4.12. Key updates in this release include: - feat(sdk-py): Removal of the fairness weight parameter from PrioritySettings ( 9441). - fix(sdk-py): Improved streaming resilience by rejoining a run stream if it closes before the run concludes ( 9554).

## Recommended actions
- Upgrade to langgraph-sdk version 0.4.12.
- Review PrioritySettings implementations to remove references to the fairness weight parameter.

## 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.