Side by side
AtScale vs Sema
Both stand on semantic layer software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxWeb
Choose AtScale if your team needs semantic models for BI connectivity alongside governed metrics and row-level security. Teams that need broader integrations, enterprise governance, or support for large-scale semantic deployments should look at Enterprise; the trial lasts 14 days and pricing is on request.
Visit AtScale Free plan APISelf-hostedWeb
Sema combines a semantic graph, natural-language querying, reporting, and governance for enterprise data work. Check connector availability and the Sandbox limits before choosing a plan.
Visit SemaThe facts
| AtScale | Sema | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | No |
| Runs on | Linux, Web | API, Self-hosted, Web |
| Lowest paid plan | Free or on request | Pro: $49 per user a month |
| Plans published | 2 | 4 |
| Maker | Not published | Not published |
| Website | atscale.com | semalayer.com |
| On semantic layer software | #10 of 28 | #6 of 28 |
AtScale: what it does well
- Standard includes semantic models and BI tool connectivity.
- Supports governed metrics, dimensions, and joins.
- Includes row-level security and a query API.
- Offers Linux and web platforms with hybrid deployment.
- Enterprise includes broader integrations and enterprise governance.
What to know first
- The trial lasts 14 days.
- Pricing is available on request.
Sema: what it does well
- Answers questions in plain English and shows SQL used.
- Verified inferred joins can be reused.
- Supports scheduled reports and metric alerts.
- Offers customer-VPC and self-hosted deployment options.
- Pro includes unlimited connectors and chat.
What to know first
- Free Sandbox has one connector and one user.
- Sandbox limits chat to 100 queries monthly.
- Several named connectors remain in beta or roadmap.
- Pro requires at least three seats at $49/user/mo.