Pyyan / Compare / Claude Agent SDK vs CrewAI vs Pydantic AI
Agent Frameworks · verified 13 Aug 2026
| Specification | Claude Agent SDK | CrewAI | Pydantic AI |
|---|---|---|---|
| Summary | The Claude Code loop as a library. | Role-based agent crews. | Type-safe, schema-validated agents. |
| Model | Harness | Role-based | Typed |
| Language | Python, TS | Python | Python |
| MCP support | Yes | Yes | — |
| Status | Active | Active | Active |
| Category | Agent Frameworks | Agent Frameworks | Agent Frameworks |
| Official | Anthropic ↗ | CrewAI ↗ | Pydantic ↗ |
Highlighted rows are where these differ.
Best for custom agents.