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