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Pyyan / Compare / Claude Agent SDK vs Pydantic AI

Claude Agent SDK vs Pydantic AI

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Agent Frameworks · verified 13 Aug 2026

Claude Agent SDKAnthropiccurrent
Pydantic AIPydanticcurrent
3 slots left
SpecificationClaude Agent SDKPydantic AI
SummaryThe Claude Code loop as a library.Type-safe, schema-validated agents.
ModelHarnessTyped
LanguagePython, TSPython
MCP supportYes—
StatusActiveActive
CategoryAgent FrameworksAgent Frameworks
OfficialAnthropic ↗Pydantic ↗

Highlighted rows are where these differ.

Claude Agent SDK

  • Renamed from Claude Code SDK in March 2026
  • Tools, bash and a full agentic loop

Best for custom agents.

Full spec sheet →

Pydantic AI

Type-safe, schema-validated agents.

Best for predictable output.

Full spec sheet →