LLM Guard vs ZeroTrusted AI Firewall
| LLM Guard | ZeroTrusted AI Firewall | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | api, Linux, self-hosted | self-hosted, Web |
| Prompt injection defense | Yes | Yes |
| PII redaction | Yes | Yes |
| Secrets detection | Yes | Yes |
| Output guardrails | Yes | Yes |
| Deployment model | self-hosted | hybrid |
| Free plan | — | No |
| Model-abuse detection | — | Yes |
Both are listed in Best LLM Security Tools. On Samsung Mobile US Press, LLM Guard scores higher on our published basis.