Microsoft Agent Framework vs Pydantic AI

Microsoft Agent Framework and Pydantic AI are both agent frameworks. Microsoft Agent Framework is published by Microsoft and Pydantic AI by Pydantic. On GitHub, Pydantic AI has 20,838 stars and Microsoft Agent Framework has 14,302. Both were last active in Oct 2026. The table lines up where they differ (publisher, weekly downloads and languages) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. Microsoft Agent Framework describes itself as: Open framework for building and hosting production-grade AI agents and multi-agent workflows in .NET and Python. Pydantic AI: Typed Python SDK for building agents with swappable model providers, plus optional capabilities for memory, sub-agents, planning and durable execution. Licenses: Microsoft Agent Framework MIT, Pydantic AI MIT.