Comparison

Kestra vs Prefect

On the evidence we track, Prefect leads this comparison with a composite score of 70/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Kestra59
★Prefect70
Score
vioscaleAI score
Kestra59 / 100medium · 54%
Prefect70 / 100high · 76%
Pricing
Free tier
Kestra✓
Prefect✓
Model
Kestrafreemium
Prefectfreemium
Price level
Kestralow
Prefecthigh
Starting price
Kestra–
Prefect$100
Transparent
Kestra✗
Prefect✓
Integrations
Count
Kestra2,000
Prefect6
Security
Certifications
KestraSOC 2
Disclosure policy
Kestra–
Prefect✓
Gdpr
Kestra✓
Prefect✓
Hipaa
Kestra–
Prefect✓
Scorecard
Kestra–
Prefect6.9
Soc2
Kestra✓
Prefect✓
Reliability
Sla pct
Kestra–
Prefect99.9
Status page
Kestra–
Prefect✓
Adoption
Dependent repos
Kestra–
Prefect767
Github stars
Kestra–
Prefect23,966
Package downloads weekly
Kestra–
Prefect2,710,819
Activity
Commits last 30d
Kestra–
Prefect98
Release
Cadence days
Kestra–
Prefect1
History
Kestra–
Prefect20 items
License
Spdx
Kestra–
PrefectApache-2.0
Language
Primary
Kestra–
PrefectPython
Content
Faq
Kestra7 items
Prefect7 items

Capabilities

Feature-by-feature on the axes that matter for data engineering tools. “-” means undocumented, not absent.

Core
Tool role
KestraOrchestrator
PrefectOrchestrator
Processing paradigm
KestraBatch + streaming
PrefectBatch
Connectivity
Connector count
Kestra1900+
PrefectNot specified
CDC / log-based replication
Kestra✗
Prefect-
Transformation
In-warehouse transformation (push-down)
Kestra✓
Prefect-
dbt-native orchestration
Kestra✓
Prefect✓
Deployment
Self-hosted / open-source available
Kestra✓
Prefect✓
Managed cloud available
Kestra✓
Prefect✓
Governance
Data lineage / asset catalog
Kestra✓
Prefect✓
Authoring
Python-first authoring
Kestra✓
Prefect✓
Execution
Incremental / partition-aware runs
Kestra✓
Prefect✓
Quality
Built-in data quality / tests
Kestra✓
Prefect-
Scale
Horizontal scale (distributed executor)
Kestra✓
Prefect✓

What each one is

The product in its own terms, so the numbers below have context.

Kestra

A language-agnostic platform that lets teams define and run business-critical workflows declaratively as code, with built-in scheduling, event-driven triggers, retries, failure handling, and full observability across cloud, on-premise, and air-gapped deployments.

Independently observed

Prefect

Leader

A Python-native workflow automation platform that handles scheduling, retries, caching, and recovery for data pipelines and AI agent workflows, with both cloud-managed and self-hosted execution options.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Kestra

HybridFree tier
  • Open SourceFree
  • Kestra CloudManaged cloud with enterprise support
    • Fully Managed Platform (Hosting, Upgrades, Monitoring)
    • Built-in Security and Governance Features
    • Customer Success Program & Enterprise Support with SLA
    • Audit Logs
  • Kestra EnterpriseContact sales
    • Run anywhere Cloud, On-Prem, Air-Gapped
    • RBAC, audit logs, secrets management, asset lineage
    • AI Copilot (Any LLM Cloud or Self-Hosted)
    • Human-in-the-Loop Approvals
as of verify ↗

Prefect

Leader
from $100/moSubscriptionFree tier

Free Hobby tier. Starter from $100/month. Team per-user monthly pricing. Enterprise custom quote.

  • HobbyFree
    • Workflow scheduling
    • Up to 5 deployments
    • 500 minutes of Prefect Serverless
    • Workflow observability
    • Logging & alerting
    • +1 more
  • Starter$100/mo
    • All Hobby features
    • Up to 20 deployments
    • 75 hours of Prefect Serverless
    • Bring your own compute
    • Webhooks
    • +1 more
  • Team-
    • All Starter features
    • Up to 100 deployments
    • 225 hours of Prefect Serverless
    • Service accounts
    • 24 hour audit log
  • EnterpriseContact sales
    • All Team features
    • SSO (SAML/OIDC)
    • RBAC + ACLs
    • Multiple workspaces
    • Directory Sync (SCIM)
    • +2 more
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Kestra✓
Prefect✓
CLI
Kestra✓
Prefect✓
Deployment
Cloud / SaaS
Kestra✓
Prefect✓
Self-hosted
Kestra✓
Prefect✓
On-premise
Kestra✓
Prefect✗
Hybrid
Kestra✗
Prefect✓
Air-gapped
Kestra✓
Prefect✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (9)
  • dbt
  • GitHub
  • Kubernetes
  • Docker
  • Slack
  • OpenAI
  • AWS Secrets Manager
  • HashiCorp Vault
  • AWS

Kestra

58 total - 49 not shared
  • Ansible
  • Spark
  • Airbyte
  • Dremio
  • Arrow Flight SQL
  • Git
  • GitHub Actions
  • Terraform
  • S3
  • Azure Data Lake Storage
  • Postgres
  • JDBC databases
  • HTTP APIs
  • Polars
  • Python
  • Bash
  • Node.js
  • Go
  • Apache Kafka
  • Apache Spark
  • PagerDuty
  • PostgreSQL
  • Anthropic
  • Google Gemini
  • +25 more
Independently observed

Prefect

Leader
14 total - 5 not shared
  • Pydantic AI
  • Snowflake
  • Redis
  • Amazon ECS
  • Google Cloud Run
Independently observed
Still deciding?

Kestra or Prefect: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.