PromptHelm vs Vellum
| PromptHelm | Vellum | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | Yes | No |
| Paid from | $39/mo | $30/mo |
| Open source | No | No |
| Platforms | Android, api, iOS, self-hosted, Web | Android, extension, iOS, macOS, self-hosted, Web, Windows |
| Free plan | Yes | Yes |
| Prompt versioning | Yes | — |
| Prompt testing | Yes | — |
| Access controls | Yes | — |
| API or SDK access | Yes | — |
| Model provider support | multi-provider | — |
Both are listed in Best Prompt Management Software, Best AI Prompt Management Software. On Inferse, PromptHelm scores higher on our published basis.