ARES vs OpenCompass
| ARES | OpenCompass | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | Linux, self-hosted | api, Linux, self-hosted |
| Deployment options | self-hosted | self-hosted |
| LLM-as-a-judge | Yes | Yes |
| Free plan | — | Yes |
| Custom metrics | — | Yes |
| Safety evaluations | — | Yes |
| Human review workflows | — | Yes |
Both are listed in Best LLM Evaluation Tools. On Specifiction, OpenCompass scores higher on our published basis.