HarmBench vs PromptGuard
| HarmBench | PromptGuard | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | $19/mo |
| Open source | No | No |
| Platforms | api, Linux, self-hosted | api, extension, Linux, macOS, self-hosted, Web, Windows |
| Free plan | Yes | Yes |
| Prompt injection tests | — | Yes |
| Jailbreak tests | — | Yes |
| Data leakage tests | — | Yes |
| Unsafe output tests | — | Yes |
| Custom test cases | — | Yes |
| Deployment mode | — | both |
Both are listed in Best AI Security Testing Tools. On The Geeks Club, PromptGuard scores higher on our published basis.