Prefect
What it is
Prefect is a workflow orchestration platform for data, machine learning, and agent workflows written in Python. Its open-source framework lets users turn existing Python code into workflows with decorators, without requiring rigid DAG structures or a custom DSL. Execution features include state tracking, retries, caching, and recovery from failures. Run timelines, logs, and alerts cover failures, SLA misses, and late runs. Scheduling options include cron, event-driven schedules, backfills, and triggers from webhooks, cloud events, or state changes. Workflows can run through managed serverless execution, hybrid execution in a customer's infrastructure, or self-hosted orchestration. In hybrid mode, workers connect through outbound-only connections while code and data remain in the customer's infrastructure; Prefect Cloud hosts the control plane and metadata. Integrations include AWS, Azure, Databricks, dbt, Docker, GCP, GitHub, Kubernetes, Slack, and Snowflake. The free Hobby plan is limited to two users, five deployments, and seven days of run retention. Paid plans start at $100/mo.
For and against
For
- Workflows use Python decorators rather than a custom DSL.
- Includes retries, caching, and recovery from failures.
- Supports event triggers and backfills.
- Offers managed, hybrid, and self-hosted execution.
Against
- Hobby allows two users and five deployments.
- Hobby retains runs for seven days.
- Paid plans start at $100/mo.
The verdict
Prefect offers Python-based orchestration with monitoring and multiple execution models. The free Hobby plan has defined user, deployment, and retention limits; paid plans start at $100/mo.
Who it suits
Prefect suits developers and teams orchestrating data, machine learning, or agent workflows in Python. Its hybrid and self-hosted options may suit teams that want execution in their own infrastructure.
Plans and prices
Hobby
2 users · 1 workspace · 5 deployments · 500 min/mo Prefect Serverless
Read 30 Sep 2026 · prefect.io
Starter
3 users · Up to 20 deployments · 75 hours of Prefect Serverless · 1,250 API requests/min
Read 30 Sep 2026 · prefect.io
Team
4–8 users · Up to 100 deployments · 225 hours of Prefect Serverless · 24 hour audit log
Read 30 Sep 2026 · prefect.io
Enterprise
Unlimited deployments · SSO (SAML/OIDC) · RBAC + ACLs · Multiple workspaces
Read 30 Sep 2026 · prefect.io
On the record
- Durable execution
- Prefect describes durable execution features including state tracking, automatic retries, caching, and recovery from failures.prefect.io · read 30 Sep 2026
- Execution options
- Prefect Cloud offers managed serverless execution or hybrid execution in a customer's infrastructure, and Prefect also offers self-hosted orchestration.prefect.io · read 30 Sep 2026
- Hybrid data control
- In hybrid execution, workers poll through outbound-only connections while code and data remain in the customer's infrastructure; Prefect Cloud hosts the control plane and metadata.prefect.io · read 30 Sep 2026
- Integrations
- The integrations directory lists AWS, Azure, Bitbucket, Dask, Databricks, dbt, Docker, GCP, GitHub, Kubernetes, Slack, Snowflake, and other integrations.docs.prefect.io · read 30 Sep 2026
- Monitoring
- Prefect provides workflow observability with run timelines, logs, and alerts for failures, SLA misses, and late runs.prefect.io · read 30 Sep 2026
- Open-source license
- Prefect says its open-source engine is licensed under Apache 2.0 and can be used, modified, and distributed commercially.prefect.io · read 30 Sep 2026
- Plan limits
- The Hobby plan includes 2 users, 1 workspace, 5 deployments, 500 minutes per month of Serverless credits, and 7 days of run retention.prefect.io · read 30 Sep 2026
- Purpose
- Prefect is a workflow orchestration platform for data, machine learning, and agents, with workflows written as plain Python.prefect.io · read 30 Sep 2026
- Python framework
- The open-source Prefect framework lets users turn existing Python code into workflows by adding decorators, without rigid DAG structures or a custom DSL.prefect.io · read 30 Sep 2026
- Scheduling and automation
- The platform supports cron and event-driven scheduling, backfills, and workflow triggers from webhooks, cloud events, or state changes.prefect.io · read 30 Sep 2026
- Security
- Prefect states that it is SOC 2 Type II certified and GDPR compliant, and describes itself as HIPAA ready.prefect.io · read 30 Sep 2026
- Security controls
- The security page lists TLS 1.2 or higher, encryption at rest, workspace-unique encryption keys, RBAC, SSO, SCIM, audit logs, and IP allowlisting.prefect.io · read 30 Sep 2026
- Support
- The pricing comparison lists Community as Hobby's support channel, and the homepage says every enterprise plan has a 30-minute response SLA.prefect.io · read 30 Sep 2026
