PromptMetrics vs Vellum
| PromptMetrics | Vellum | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | $30/mo |
| Open source | No | No |
| Platforms | api, Linux, macOS, self-hosted, Web, Windows | Android, extension, iOS, macOS, self-hosted, Web, Windows |
| Prompt versioning | Yes | — |
| Prompt testing | Yes | — |
| Prompt templates | Yes | — |
| Access controls | Yes | — |
| API or SDK access | Yes | — |
| Model provider support | multi-provider | — |
| Free plan | — | Yes |
Both are listed in Best Prompt Management Software, Best AI Prompt Management Software. On Inferse, Vellum scores higher on our published basis.