HouYi vs Promptfoo
| HouYi | Promptfoo | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | self-hosted | api, Linux, macOS, self-hosted, Web, Windows |
| Attack categories | prompt injection | — |
| Target systems | LLM-integrated applications | — |
| Automation level | automated | — |
| Custom tests | Yes | — |
| Deployment | self_hosted | — |
| Continuous monitoring | No | — |
| Free plan | — | Yes |
Both are listed in Best AI Red Teaming Tools. On Specifiction, Promptfoo scores higher on our published basis.