# Presidio vs OpenAI Guardrails (slim)

> OpenAI Guardrails scores 69.5 (B) on agent readiness against Presidio's 66 (B), and leads in 4 of 7 scored categories. Presidio leads on reliability. Both do guard pii. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/microsoft-presidio-vs-openai-guardrails.md (~2,450 tokens) · this version ~530 tokens · JSON https://www.anchorterminal.com/compare/microsoft-presidio-vs-openai-guardrails.json · canonical https://www.anchorterminal.com/compare/microsoft-presidio-vs-openai-guardrails
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

OpenAI Guardrails scores 69.5 (B) on agent readiness against Presidio's 66 (B), and leads in 4 of 7 scored categories. Presidio leads on reliability. Both do guard pii.

- Presidio: B 66, rank #281 of 842 · https://www.anchorterminal.com/tools/microsoft-presidio.min.md
- OpenAI Guardrails: B 69.5, rank #175 of 842 · https://www.anchorterminal.com/tools/openai-guardrails.min.md
- Presidio, good for Detecting and masking personal data in prompts, outputs, logs and images on the owner's own machines, with detection tuned by entity, threshold and custom recognisers. Ahead on Reliability, 78 against 73. Also No key needed to call it.
- OpenAI Guardrails, good for Teams already on the OpenAI client or Agents SDK that want several checks from one config file with little code. Ahead on Security & auth, 59 against 53; Maintenance & community, 89 against 63; Transparency & trust, 76 against 65.

| Category | Presidio | OpenAI Guardrails |
| --- | --- | --- |
| Reliability (16%) | 78 | 73 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 69 | 66 |
| Agent ergonomics (13%) | 69 | 73 |
| Security & auth (14%) | 53 | 59 |
| Payments & pricing (10%) | 60 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 63 | 89 |
| Transparency & trust (7%) | 65 | 76 |

| Fact (where they differ) | Presidio | OpenAI Guardrails |
| --- | --- | --- |
| Kind | SDK + MCP | Agent framework |
| Vendor | Data Privacy Stack | OpenAI |
| Auth | None | API key |
| Last release | 2026-07-22 | 2026-09-10 |
| Popularity | 11k stars, 1.2M PyPI/wk | 259 stars, 19k npm/wk, 105k PyPI/wk |