Fiddler Guardrails vs PII Firewall
| Fiddler Guardrails | PII Firewall | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | api, self-hosted, Web | Linux |
| Free plan | Yes | — |
| Deployment | hybrid | self_hosted |
| Prompt injection defense | Yes | No |
| PII detection | Yes | Yes |
| Jailbreak detection | Yes | No |
| Custom policies | Yes | Yes |
| SDK languages | Python, Node.js | Python |
Both are listed in Best AI Guardrail Software. On Samsung Mobile US Press, Fiddler Guardrails scores higher on our published basis.