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Astronomer vs Dagster
Compare Astronomer and Dagster on deployment, pricing and source model before you shortlist.
| Attribute |  AstronomerOther license |  DagsterOpen source |
|---|---|---|
| Category | Data Engineering | Data Engineering |
| Primary focus | Astro: managed Apache Airflow for orchestrating data pipelines and agentic AI workflows. | Open-source data orchestrator with software-defined assets; Dagster Labs joined Prefect in 2026. |
| Deployment | Self-hosted | Self-hosted |
| Source model | Other license | Open source |
| Pricing model | paid | open source |
| API available | Yes | Yes |
| Vendor website | Visit vendor ↗ | Visit vendor ↗ |
| ITHub profile | View full profile → | View full profile → |
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Frequently asked questions
Is Astronomer or Dagster open source?
Astronomer is not open source (proprietary or source-available). Dagster is open source.
What is the pricing model for Astronomer vs Dagster?
Astronomer uses a paid pricing model. Dagster uses an open source pricing model. Confirm current rates with each vendor before deciding.
Can Astronomer and Dagster be self-hosted?
Astronomer is self-hostable. Dagster is self-hostable.