# ACE-Step vs prefect

> Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.

| | ACE-Step | prefect |
|---|---|---|
| Score | 77/100 | 80/100 ✓ |
| Rank in category | #13 of 124 in AI | #4 of 32 in Workflow Automation |
| GitHub stars | 14 166 | 24 098 ✓ |
| Stars, last 30 days | +1 298 ✓ | +177 |
| Stable releases, 12 months | 9 | 17 ✓ |
| Latest release | v0.1.8 · 18 May 2026 | 2.20.27 · 23 Oct 2026 ✓ |
| Setup | Moderate | Moderate ✓ |
| Official Docker image | No | Yes ✓ |
| License | MIT | Apache-2.0 |
| Main language | Python | Python |

## Which one should you pick?

prefect scores 80/100 against 77/100 for ACE-Step, so it is the safer default.

prefect ships more often: 17 stable releases in the past year, against 9 for ACE-Step.

ACE-Step is growing faster right now (+1 298 stars in 30 days).

## Details

- [ACE-Step](https://selfhost.directory/project/ace-step) (markdown: https://selfhost.directory/project/ace-step.md)
- [prefect](https://selfhost.directory/project/prefect) (markdown: https://selfhost.directory/project/prefect.md)

## Related comparisons

- [Kestra vs prefect](https://selfhost.directory/compare/kestra-vs-prefect)

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Source: https://selfhost.directory/compare/ace-step-vs-prefect