Open-source LangGraph alternatives

2 open-source alternatives to LangGraph, curated: Agno, Pydantic AI. Each is open-source; compare license and links below.

ToolWhat it isLicenseOpen source
AgnoOSS alt to LangGraph; ~41632 stars; via ossinsight.ioApache-2.0yes
Pydantic AIOSS alt to LangGraph; ~19148 stars; via ossinsight.ioMITyes

Positioning is each tool's own description; open-source status is evidence-based. See each linked entry for details.