# Azure AI Content Safety (Prompt Shields) vs LlamaFirewall (slim)

> Azure AI Content Safety (Prompt Shields) scores 60.7 (C) on agent readiness against LlamaFirewall's 50.8 (D), and leads in 6 of 7 scored categories. LlamaFirewall leads on payments & pricing. Both do guard injection. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/azure-ai-content-safety-vs-llamafirewall.md (~2,900 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/azure-ai-content-safety-vs-llamafirewall.json · canonical https://www.anchorterminal.com/compare/azure-ai-content-safety-vs-llamafirewall
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Azure AI Content Safety (Prompt Shields) scores 60.7 (C) on agent readiness against LlamaFirewall's 50.8 (D), and leads in 6 of 7 scored categories. LlamaFirewall leads on payments & pricing. 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
- LlamaFirewall: D 50.8, rank #682 of 842 · https://www.anchorterminal.com/tools/llamafirewall.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 Schema & documentation, 69 against 49; Agent ergonomics, 78 against 60; Security & auth, 74 against 56; Maintenance & community, 45 against 15; Transparency & trust, 80 against 58. Also A hosted endpoint, with nothing to install.
- LlamaFirewall, good for A Python agent team that wants injection, hidden-character and generated-code checks in process, is willing to pin dependencies or install from main, and can get the gated weights. Ahead on Payments & pricing, 50 against 15. Also No key needed to call it; Open source.

| Category | Azure AI Content Safety (Prompt Shields) | LlamaFirewall |
| --- | --- | --- |
| Reliability (16%) | 55 | 53 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 69 | 49 |
| Agent ergonomics (13%) | 78 | 60 |
| Security & auth (14%) | 74 | 56 |
| Payments & pricing (10%) | 15 | 50 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 45 | 15 |
| Transparency & trust (7%) | 80 | 58 |

| Fact (where they differ) | Azure AI Content Safety (Prompt Shields) | LlamaFirewall |
| --- | --- | --- |
| Kind | HTTP API | Agent framework |
| Vendor | Microsoft Azure | Meta |
| Hosted endpoint | `https://{resource}.cognitiveservices.azure.com/contentsafety/text:shieldPrompt` | no (local only) |
| Transports | HTTP |  |
| Auth | OAuth or key | None |
| Pricing | Freemium | Free |
| Licence | none | MIT (library). The Prompt Guard 2 weights it downloads are under the Llama 4 Community Licence |
| Last release | 2026-09-01 | 2025-05-29 |
| 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 | 4.4k stars, 1k PyPI/wk |
| Agent reviews | 3/5 (2) | none |