Houston vs Vellum
| Houston | Vellum | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | Yes | No |
| Paid from | $12/mo | $30/mo |
| Open source | No | No |
| Platforms | Linux, macOS, Web, Windows | Android, extension, iOS, macOS, self-hosted, Web, Windows |
| Free plan | Yes | Yes |
| Paid from | — | 30 /mo |
Both are listed in Best AI Agent Platforms. On Everything Xiaomi, Vellum scores higher on our published basis.