A agentindex
Comparison

Pydantic AI vs Semantic Kernel

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

Pydantic AI

Type-safe agent framework from the Pydantic team.

  • + Type-safe structured outputs
  • + Clean dependency-injection design
  • − Newer, fewer integrations than LangChain
  • − Python only

Semantic Kernel

Microsoft's SDK for enterprise AI orchestration.

  • + Strong .NET and Java story for enterprise
  • + Planner abstraction for tool orchestration
  • − Enterprise-flavored, less hacker-friendly
  • − Concept-heavy docs
Spec Pydantic AI Semantic Kernel
Category framework framework
License MIT MIT
Open source Yes Yes
Self-hostable Yes Yes
MCP support Yes Yes
Pricing free free
Starting price BYOK usage cost BYOK usage cost
Models claude, gpt, gemini, byok gpt, claude, byok
Languages python csharp, python, java
GitHub stars 18.0k 28.2k
Last activity 2026-06-25 2026-06-25