Prefect
MLOps & Training · Free + paid
Modern workflow orchestration
At a glance
- Made by
- Prefect Technologies, Inc.
- Korean
- None (English and a few others only)
- API
- Yes
- Available on
- Web, CLI
- Open source
- Apache 2.0
- GitHub
- 24,017 stars · Apache-2.0
What is Prefect?
Prefect is a workflow orchestration platform for data, ML, and agents. You turn plain Python functions into workflows by adding decorators, and the platform handles scheduling, retries, caching, and recovery. The same code runs anywhere, such as managed compute (Prefect Serverless) or your own VPC; in the hybrid architecture, workers run on your own infrastructure and send only logs and state to Prefect. The open-source framework and Prefect Cloud use the same engine.
- State, logging, and automatic retries with @flow and @task decorators
- Run on managed compute, your own VPC, Kubernetes, or ECS
- Hybrid architecture (workers poll the API, no inbound connections)
- Observe runs, logs, and state for every team
- Cron- and event-based scheduling and backfills
- Automated alerts for failures, SLA violations, and delays
- Deploy with the Prefect CLI
Who uses Prefect and for what
- Replace fragile cron jobs with self-healing data pipelines
- ML workflow orchestration
Pricing
What you get for free — Yes (Hobby is free forever — 2 users, 5 deployments, 500 Serverless minutes, 7 days of run history)
| Plan | Price | Main limits |
|---|---|---|
| Hobby | $0/mo | Free forever, 2 users, 5 deployments, 500 Prefect Serverless minutes per month, 7 days of run retention |
| Starter | $100/mo | 3 users, 20 deployments, 75 Serverless hours per month, your own compute, 1,250 API requests/minute |
| Team | $100/mo | $100/month per user, 4–8 users, 100 deployments, 225 Serverless hours per month, 24 hours of audit logs |
| Enterprise | Contact sales | Custom pricing (annual billing), SSO, RBAC, unlimited deployments, 99.9% uptime SLA |
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying. · Official pricing page
AI tools similar to Prefect (alternatives)
Prefect vs. alternatives at a glance
| AI | Pricing | Combos on the map | Connected tools | Free | Cheapest monthly | Korean |
|---|---|---|---|---|---|---|
| Prefect | Free + paid | 0 | 3 | Yes | $100/mo | No |
| Apache Airflow | Free + paid | 0 | 3 | — | — | No |
| Kubeflow | Free + paid | 0 | 3 | — | — | No |
| ZenML | Free + paid | 0 | 3 | Yes | $39/mo | No |
2 of these 4 tools have a free plan. Cheapest paid plan: ZenML ($39/mo).
Combo and connection counts are based on the relationships recorded on AI Galaxy Map (2026-10-26); they are not a quality ranking.
Prefect on AI Galaxy Map
- One of 45 AI tools in the MLOps & Training field.
- Connected to 3 other tools — #38 in its field.
Frequently asked questions
Can I use Prefect for free?
Yes (Hobby is free forever — 2 users, 5 deployments, 500 Serverless minutes, 7 days of run history). Prices can change, so check the official site before paying.
What AI can I use instead of Prefect?
Tools that do the same job, such as Apache Airflow, Kubeflow, ZenML, are connected to it on the map.
Can I use Prefect in Korean?
None (English and a few others only)
Sources (official pages)
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying.