Luigi vs Prefect
A side-by-side comparison of two self-hosted automation & workflows options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Luigi | Prefect |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 90 · Excellent | 97 · Excellent |
| Category | Automation & Workflows | Automation & Workflows |
| License | Apache-2.0 | Apache-2.0 |
| Language | Python | Python |
| Setup difficulty | Medium | Medium |
| Min. RAM | 256 MB | 1,024 MB |
| Deployment | bare-metal, binary, source | docker, kubernetes, helm |
| GitHub stars | ★ 18,777 | ★ 23,913 |
| First released | 2012 | 2018 |
| Replaces | AWS Step Functions | AWS Step Functions, Azure Data Factory |
What are Luigi and Prefect?
Luigi
Luigi is a Python package that helps build complex pipelines of batch jobs. It handles dependency resolution, workflow management, visualization and failure handling for long-running data tasks.
- Dependency-driven batch pipelines
- Central scheduler with web UI
- Built-in support for Hadoop and databases
- Simple Python task model
Prefect
Prefect is a workflow orchestration tool that turns Python functions into observable, schedulable pipelines. The open-source server can be self-hosted to coordinate and monitor flow runs.
- Pythonic flow and task definitions
- Dynamic, event-driven workflows
- Self-hostable orchestration server
- Rich observability dashboard
Luigi vs Prefect: key differences
Both projects are written in Python. Luigi is the lighter option, starting around 256 MB of RAM against 1,024 MB for Prefect. Luigi is the more established project (first released 2012), while Prefect arrived in 2018. Prefect lists first-class Docker deployment; Luigi does not.
Why pick each one
Choose Luigi if…
- Lightweight and easy to start
- Created and used by Spotify
Watch out for
- Less actively developed than newer tools
Choose Prefect if…
- Pleasant developer experience
- Flexible dynamic workflows
Watch out for
- Some features tied to Prefect Cloud
Frequently asked questions
Is Luigi or Prefect better?
Neither is universally better. Prefect has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Luigi and Prefect free and open-source?
Yes. Luigi is licensed under Apache-2.0 and Prefect under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Luigi and Prefect with Docker?
Luigi: check the project docs for container support. Prefect: yes.
Which is lighter on resources, Luigi or Prefect?
Luigi has the smaller minimum footprint at 256 MB of RAM, compared to about 1,024 MB for Prefect. Real-world usage depends on library size, user count, and enabled features.