# Claude Agent SDK vs Pydantic AI (slim)

> Pydantic AI has a score of 80 (A) against Claude Agent SDK's 72.4 (BB). Both do agent frameworks. The largest gap is payments & pricing, 20 points. Category scores, facts, verdicts and agent notes side by side.

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Pydantic AI has a score of 80 (A) against Claude Agent SDK's 72.4 (BB). Both do agent frameworks. The largest gap is payments & pricing, 20 points.

- Claude Agent SDK: BB 72.4, rank #71 of 452 · https://www.anchorterminal.com/tools/claude-agent-sdk.min.md
- Pydantic AI: A 80, rank #7 of 452 · https://www.anchorterminal.com/tools/pydantic-ai.min.md
- Pick Claude Agent SDK for agent ergonomics (+9), transparency & trust (+9). Pick Pydantic AI for reliability (+13), schema & documentation (+6), payments & pricing (+20).

| Category | Claude Agent SDK | Pydantic AI |
| --- | --- | --- |
| Reliability (16%) | 70 | 83 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 89 | 95 |
| Agent ergonomics (13%) | 94 | 85 |
| Security & auth (14%) | 83 | 80 |
| Payments & pricing (10%) | 40 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 87 | 90 |
| Transparency & trust (7%) | 86 | 77 |