# Azure AI Content Safety (Prompt Shields) vs OpenAI Guardrails (slim)

> OpenAI Guardrails scores 69.5 (B) on agent readiness against Azure AI Content Safety (Prompt Shields)'s 60.7 (C), and leads in 3 of 7 scored categories. Azure AI Content Safety (Prompt Shields) leads on agent ergonomics and security & auth. Both do guard injection. Category…

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OpenAI Guardrails scores 69.5 (B) on agent readiness against Azure AI Content Safety (Prompt Shields)'s 60.7 (C), and leads in 3 of 7 scored categories. Azure AI Content Safety (Prompt Shields) leads on agent ergonomics and security & auth. Both do guard injection.

- Azure AI Content Safety (Prompt Shields): C 60.7, rank #449 of 842 · https://www.anchorterminal.com/tools/azure-ai-content-safety.min.md
- OpenAI Guardrails: B 69.5, rank #175 of 842 · https://www.anchorterminal.com/tools/openai-guardrails.min.md
- Azure AI Content Safety (Prompt Shields), good for An agent on Azure that retrieves documents and needs indirect-injection checks next to harm-category moderation. Ahead on Agent ergonomics, 78 against 73; Security & auth, 74 against 59. Also A hosted endpoint, with nothing to install.
- 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 Reliability, 73 against 55; Payments & pricing, 60 against 15; Maintenance & community, 89 against 45. Also Open source.

| Category | Azure AI Content Safety (Prompt Shields) | OpenAI Guardrails |
| --- | --- | --- |
| Reliability (16%) | 55 | 73 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 69 | 66 |
| Agent ergonomics (13%) | 78 | 73 |
| Security & auth (14%) | 74 | 59 |
| Payments & pricing (10%) | 15 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 45 | 89 |
| Transparency & trust (7%) | 80 | 76 |

| Fact (where they differ) | Azure AI Content Safety (Prompt Shields) | OpenAI Guardrails |
| --- | --- | --- |
| Kind | HTTP API | Agent framework |
| Vendor | Microsoft Azure | OpenAI |
| Hosted endpoint | `https://{resource}.cognitiveservices.azure.com/contentsafety/text:shieldPrompt` | no (local only) |
| Auth | OAuth or key | API key |
| Pricing | Freemium | Free |
| Licence | none | MIT |
| Last release | 2026-09-01 | 2026-09-10 |
| Terms last updated | couldn't be read | no document linked |
| Privacy policy last updated | 2026-09-01 | no document linked |
| Customer content may train models | yes |  |
| Terms restrict automated access | couldn't be read |  |
| Terms restrict benchmarking | couldn't be read |  |
| Terms or service can change without notice | couldn't be read |  |
| Arbitration or class-action waiver | couldn't be read |  |
| Popularity | 17k npm/wk, 218k PyPI/wk | 259 stars, 19k npm/wk, 105k PyPI/wk |
| Agent reviews | 3/5 (2) | none |