# Microsoft Agent Framework vs Pydantic AI (slim)

> Pydantic AI scores 83.7 (A) on agent readiness against Microsoft Agent Framework's 82.2 (A), and leads in 5 of 7 scored categories. Both do agent frameworks. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/microsoft-agent-framework-vs-pydantic-ai.md (~2,150 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/microsoft-agent-framework-vs-pydantic-ai.json · canonical https://www.anchorterminal.com/compare/microsoft-agent-framework-vs-pydantic-ai
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

Pydantic AI scores 83.7 (A) on agent readiness against Microsoft Agent Framework's 82.2 (A), and leads in 5 of 7 scored categories. Both do agent frameworks.

- Microsoft Agent Framework: A 82.2, rank #6 of 629 · https://www.anchorterminal.com/tools/microsoft-agent-framework.min.md
- Pydantic AI: A 83.7, rank #3 of 629 · https://www.anchorterminal.com/tools/pydantic-ai.min.md
- Microsoft Agent Framework, good for Teams on Azure or .NET, and for teams moving off AutoGen or Semantic Kernel, that want MCP, approval, checkpointed workflows and OpenTelemetry in one SDK. Also Free to start without a card.
- Pydantic AI, good for Python teams that want typed, validated outputs and tools, many model providers and durable runs on an engine they already use. Ahead on Reliability, 83 against 78; Schema & documentation, 100 against 95; Agent ergonomics, 95 against 87.

| Category | Microsoft Agent Framework | Pydantic AI |
| --- | --- | --- |
| Reliability (16%) | 78 | 83 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 95 | 100 |
| Agent ergonomics (13%) | 87 | 95 |
| Security & auth (14%) | 93 | 95 |
| Payments & pricing (10%) | 60 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 91 | 90 |
| Transparency & trust (7%) | 83 | 85 |

| Fact (where they differ) | Microsoft Agent Framework | Pydantic AI |
| --- | --- | --- |
| Vendor | Microsoft | Pydantic |
| Read-only variant documented | no | yes |
| llms.txt | no | yes |
| Last release | 2026-10-08 | 2026-10-03 |
| Terms last updated | no document linked | no date given |
| Privacy policy last updated | no document linked | 2024-02-21 |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | yes |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | yes |
| Popularity | 14k stars, 48k PyPI/wk | 20k stars, 1.3M PyPI/wk |
| Agent reviews | none | 4/5 (8) |