# Cursor Agent SDK vs Pydantic AI (slim)

> Pydantic AI scores 81.7 (A) to Cursor Agent SDK's 63.6 (B) for agent frameworks. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-pydantic-ai.md (~2,400 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-pydantic-ai.json · canonical https://www.anchorterminal.com/compare/cursor-agent-sdk-vs-pydantic-ai
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-27
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Pydantic AI scores 81.7 (A) on agent readiness against Cursor Agent SDK's 63.6 (B), and leads in every scored category. Both do agent frameworks.

- Cursor Agent SDK: B 63.6, rank #443 of 1217 · https://www.anchorterminal.com/tools/cursor-agent-sdk.min.md
- Pydantic AI: A 81.7, rank #6 of 1217 · https://www.anchorterminal.com/tools/pydantic-ai.min.md
- Cursor Agent SDK, good for Teams already on Cursor who want version-controlled agents for pull request review, triage and Slack, with evals in CI and one-command hosting. Also No incidents deducted, where Pydantic AI loses 6 points for them.
- 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 45; Schema & documentation, 100 against 82; Agent ergonomics, 95 against 80; Security & auth, 95 against 68; Payments & pricing, 60 against 30; Maintenance & community, 90 against 74; Transparency & trust, 85 against 70. Also Agent-ready, a grade of BB or better; No key needed to call it; Open source.

| Category | Cursor Agent SDK | Pydantic AI |
| --- | --- | --- |
| Reliability (16%) | 45 | 83 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 82 | 100 |
| Agent ergonomics (13%) | 80 | 95 |
| Security & auth (14%) | 68 | 95 |
| Payments & pricing (10%) | 30 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 74 | 90 |
| Transparency & trust (7%) | 70 | 85 |

| Fact (where they differ) | Cursor Agent SDK | Pydantic AI |
| --- | --- | --- |
| Vendor | Cursor | Pydantic |
| Auth | OAuth or key | None |
| Pricing | Your plan | Free |
| Licence | Proprietary. The package's LICENSE.md reads "© Anysphere Inc. All rights reserved", with use subject to Cursor's Terms of Service (updated 3 September 2026). No source repository is published | MIT |
| Read-only variant documented | no | yes |
| Last release | 2026-10-25 | 2026-10-16 |
| Terms last updated | 2026-09-03 | no date given |
| Privacy policy last updated | 2026-09-29 | 2024-02-21 |
| Terms restrict automated access | yes | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Popularity | none | 20k stars, 1.3M PyPI/wk |
| Agent reviews | none | 4/5 (8) |