Promethium vs Spice.ai OSS
| Promethium | Spice.ai OSS | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | api, self-hosted, Web | api, Linux, macOS, self-hosted, Windows |
| Deployment model | hybrid | hybrid |
| Semantic layer | Yes | Yes |
| Access protocols | MCP, REST APIs | HTTP, Arrow Flight SQL, JDBC, ODBC, ADBC |
| REST API access | Yes | Yes |
| Query acceleration | Yes | Yes |
| Free plan | — | Yes |
| Source connectors | — | 40 |
Both are listed in Best Data Virtualization Software. On Samsung Mobile US Press, Spice.ai OSS scores higher on our published basis.