Ontop vs Spice.ai OSS
Ontop
ontop-vkg.orgSpice.ai OSS
spiceai.orgSide by side
| Figure | Ontop | Spice.ai OSS |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 0 | 1 |
| Spec score · Data Virtualization Software | 7.9 (#11) | 7.7 (#12) |
| Deployment | Ontop can be deployed as a SPARQL endpoint using its command-line interface or Docker image. | Spice runs as a binary, container, Kubernetes workload, or managed app on the Spice Cloud Platform. |
| Product | Ontop is a Virtual Knowledge Graph system that exposes relational database content as knowledge graphs while leaving data in its source databases. | Spice is an open-source SQL query and AI-inference engine built in Rust for developers. |
Plans
In their own words
Spice.ai OSS
Spice.ai OSS is a free, open-source SQL query and AI-inference engine built in Rust for developers. Its SQL API queries structured and unstructured data across databases, data warehouses, and data lakes. Data can be materialized in DuckDB, SQLite, or PostgreSQL in memory or on disk, with results caching included. The AI engine provides an OpenAI-compatible API for local and hosted inference, search, memory, evaluations, and observability. Search methods include vector, full-text BM25, and hybrid approaches exposed through SQL table-valued functions. Spice lists over 40 data connectors, including PostgreSQL, MySQL, S3, Snowflake, Databricks, and DuckDB, and documented client integrations include DBeaver, JetBrains DataGrip, Apache Superset, Tableau, and Microsoft Power BI. It can run as a binary, container, Kubernetes workload, or managed app on Spice Cloud. The Apache 2.0-licensed software is self-hostable as a binary or Docker image. Listed operating systems are macOS with Apple Silicon, Linux on x86_64 or aarch64, and Windows 10 or later with WSL.