# Estuary Flow vs Prefect

**Leader by Vioscale score:** Estuary Flow

| Attribute | Estuary Flow | Prefect |
|---|---|---|
| **Vioscale score** | 80.4 (71% (medium)) | 69.8 (76% (high)) |
| activity.commits_last_30d | - | 100 |
| adoption.dependent_repos | - | 767 |
| adoption.github_stars | - | 23,691 |
| adoption.package_downloads_weekly | - | 2,710,819 |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true,"hybrid":true,"self_hosted":true}` |
| description.long | Estuary provides real-time and batch data movement across hundreds of systems using log-based change capture, event streaming, and traditional extract-load patterns, all without requiring code or infrastructure management. It's designed to power analytics, operational systems, and AI applications with sub-100ms latency in a single managed service. | A workflow orchestration platform that enables teams to build resilient automated processes using Python, with features like automatic retries, state tracking, and run observability. Supports flexible deployment options ranging from managed cloud infrastructure to self-hosted environments on Kubernetes or user-provided compute. |
| features.capabilities | `{"cdc":true,"role":"elt","paradigm":"both","managed_cloud":true,"connector_count":"200+","self_hosted_oss":true,"incremental_runs":true,"distributed_executor":true}` | `{"role":"orchestrator","lineage":true,"paradigm":"batch","dbt_native":true,"python_first":true,"managed_cloud":true,"connector_count":"Not specified","self_hosted_oss":true,"incremental_runs":true,"distributed_executor":true}` |
| integrations.count | 200 | 5 |
| integrations.list | `[{"name":"Oracle"},{"name":"MySQL"},{"name":"PostgreSQL"},{"name":"Amazon S3"},{"name":"Google Cloud Storage"},{"name":"Azure Blob Storage"},{"name":"NetSuite"},{"name":"HubSpot"},{"name":"Salesforce"},{"name":"Google Pub/Sub"},{"name":"Amazon Kinesis"},{"name":"Apache Kafka"},{"name":"Snowflake"},{"name":"Google BigQuery"},{"name":"Amazon Redshift"},{"name":"Elasticsearch"},{"name":"MongoDB"},{"name":"Amazon DynamoDB"},{"name":"Pinecone"},{"name":"OpenAI"},{"name":"Databricks"},{"name":"Facebook Ads"},{"name":"LinkedIn Ads"},{"name":"Google Ads"},{"name":"SingleStore"},{"name":"Motherduck"},{"name":"Apache Iceberg"}]` | `[{"name":"Pydantic AI"},{"name":"OpenAI"},{"name":"AWS Secrets Manager"},{"name":"HashiCorp Vault"},{"name":"dbt"}]` |
| language.primary | - | Python |
| license.spdx | - | Apache-2.0 |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"usage","plans":[{"free":true,"name":"Developer Free","summary":"Free forever up to 10GB/month","features":["Access to Cloud Plan features","10GB/month data limit","2 concurrent connectors","Cloud deployment"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Launch your first pipelines for free","contactSales":false,"includedLimits":{"data_moved":"10GB/month","concurrent_connectors":"2"}},{"free":false,"name":"Cloud","summary":"$0.50/GB + $100/connector, billed monthly","features":["200+ fully-managed connectors","Unlimited users","Millisecond latency or batch","Role-based access control (RBAC)","Bring your own cloud storage","US/EU data processing regions","SSH tunnel support","UI and CLI management","Standard support via community Slack and email","dbt Cloud integration","Kafka compatibility","Real-time monitoring and alerting","50% discount on 6+ connectors"],"components":[{"per":{"qty":1,"unit":"gb"},"kind":"metered","amount":0.5,"currency":"USD"},{"kind":"per_unit","unit":"connector","amount":100,"period":"month","currency":"USD"}],"contactSales":false},{"free":false,"name":"Enterprise","summary":"Custom pricing with volume discounts","features":["All Cloud features","Volume-based discounts","SOC 2 & HIPAA compliance reports","Single sign-on (SSO)","Custom SLA terms","Private and BYOC deployments","Provisioned servers","Custom region support","Private networking (PrivateLink, Google Service Connect)","Performance customization/tuning","Dedicated support via Slack and email","Migration assistance","IAM and advanced authentication","Custom connector development"],"description":"Scaled Pricing","contactSales":true}],"summary":"Usage-based: $0.50/GB + $100/connector/month. Free tier: 10GB/month.","currency":"USD","freeTier":true,"sourceUrl":"https://estuary.dev","retrievedAt":"2026-08-03T14:24:35.648Z","freeTrialDays":30,"startingPrice":{"amount":0.5,"period":"month","currency":"USD"},"billingPeriods":["month"]}` | `{"type":"subscription","plans":[{"free":true,"name":"Hobby","summary":"Free forever","features":["workflow scheduling","workflow observability","logging & alerting"],"minSeats":2,"description":"Starter tier for individual workflows","contactSales":false,"includedLimits":{"users":"2","deployments":"5","run_retention":"7 days","serverless_compute":"500 min/mo"}},{"free":false,"name":"Starter","summary":"$100/mo","features":["bring your own compute","webhooks","API access"],"minSeats":3,"commitment":"monthly","components":[{"kind":"fixed","amount":100,"period":"month","currency":"USD"}],"description":"For teams bringing their own compute infrastructure","contactSales":false,"includedLimits":{"users":"3","deployments":"20","serverless_compute":"75 hours/mo","api_requests_per_min":"1250"}},{"free":false,"name":"Team","summary":"$100/user/mo","features":["service accounts","audit logging","team collaboration"],"minSeats":4,"commitment":"annual","components":[{"kind":"per_unit","unit":"seat","amount":100,"period":"month","currency":"USD"}],"description":"Multi-user collaboration with governance features","contactSales":false,"includedLimits":{"users":"4-8","deployments":"100","serverless_compute":"225 hours/mo","audit_log_retention_hours":"24"}},{"free":false,"name":"Enterprise","summary":"Custom pricing","features":["SSO (SAML/OIDC)","RBAC with object-level ACLs","multiple workspaces","directory sync (SCIM)","IP allowlisting","PrivateLink private networking"],"minSeats":5,"description":"Custom deployment with advanced security and compliance","contactSales":true,"includedLimits":{"deployments":"unlimited","serverless_compute":"custom"}}],"summary":"Free tier. Starter from $100/mo. Team at $100/user/mo. Enterprise custom pricing.","currency":"USD","freeTier":true,"sourceUrl":"https://www.prefect.io/pricing","retrievedAt":"2026-08-14T15:26:09.793Z","startingPrice":{"amount":100,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | commercial |
| pricing.price_level | low | high |
| pricing.transparent | yes | yes |
| release.cadence_days | - | 1 |
| release.history | - | `[{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.4","date":"2026-08-25T17:15:13Z","type":"stable","version":"3.8.4"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.4.dev7","date":"2026-08-25T08:17:08Z","type":"prerelease","version":"3.8.4.dev7"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.4.dev6","date":"2026-08-22T08:08:27Z","type":"prerelease","version":"3.8.4.dev6"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.4.dev5","date":"2026-08-21T08:15:17Z","type":"prerelease","version":"3.8.4.dev5"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.4.dev4","date":"2026-08-20T08:14:17Z","type":"prerelease","version":"3.8.4.dev4"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.4.dev3","date":"2026-08-19T08:12:16Z","type":"prerelease","version":"3.8.4.dev3"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.4.dev2","date":"2026-08-18T08:12:04Z","type":"prerelease","version":"3.8.4.dev2"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.4.dev1","date":"2026-08-14T08:31:14Z","type":"prerelease","version":"3.8.4.dev1"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.3","date":"2026-08-13T18:53:23Z","type":"stable","version":"3.8.3"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.3.dev3","date":"2026-08-13T08:33:56Z","type":"prerelease","version":"3.8.3.dev3"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.3.dev2","date":"2026-08-12T08:32:30Z","type":"prerelease","version":"3.8.3.dev2"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.3.dev1","date":"2026-08-11T08:23:35Z","type":"prerelease","version":"3.8.3.dev1"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.2","date":"2026-08-07T21:15:48Z","type":"stable","version":"3.8.2"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.2.dev6","date":"2026-08-07T08:27:11Z","type":"prerelease","version":"3.8.2.dev6"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.2.dev5","date":"2026-08-06T08:59:18Z","type":"prerelease","version":"3.8.2.dev5"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.2.dev4","date":"2026-08-05T08:58:55Z","type":"prerelease","version":"3.8.2.dev4"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.2.dev3","date":"2026-08-04T09:00:27Z","type":"prerelease","version":"3.8.2.dev3"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.2.dev2","date":"2026-08-03T09:13:20Z","type":"prerelease","version":"3.8.2.dev2"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.2.dev1","date":"2026-08-01T08:49:58Z","type":"prerelease","version":"3.8.2.dev1"},{"url":"https://github.com/PrefectHQ/prefect/releases/tag/3.8.1","date":"2026-07-30T21:15:25Z","type":"stable","version":"3.8.1"}]` |
| reliability.sla_pct | 99.9 | 99.99 |
| reliability.status_page | yes | yes |
| security.gdpr | yes | yes |
| security.hipaa | yes | yes |
| security.scorecard | - | 6.9 |
| security.soc2 | yes | yes |
| security.vulnerabilities | - | `{"count":8,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=prefect&per_page=100","last_12m":6,"max_severity":"HIGH"}` |

## Capabilities (Data Engineering Tools)

| Capability | Estuary Flow | Prefect |
|---|:--:|:--:|
| **Core** |  |  |
| Tool role | ELT / ingestion | Orchestrator |
| Processing paradigm | Batch + streaming | Batch |
| **Connectivity** |  |  |
| Connector count | 200+ | Not specified |
| CDC / log-based replication | ✓ | - |
| **Transformation** |  |  |
| In-warehouse transformation (push-down) | - | - |
| dbt-native orchestration | - | ✓ |
| **Deployment** |  |  |
| Self-hosted / open-source available | ✓ | ✓ |
| Managed cloud available | ✓ | ✓ |
| **Governance** |  |  |
| Data lineage / asset catalog | - | ✓ |
| **Authoring** |  |  |
| Python-first authoring | - | ✓ |
| **Execution** |  |  |
| Incremental / partition-aware runs | ✓ | ✓ |
| **Quality** |  |  |
| Built-in data quality / tests | - | - |
| **Scale** |  |  |
| Horizontal scale (distributed executor) | ✓ | ✓ |

*Source: Vioscale. Generated 2026-09-01T17:10:26.139Z. "-" = undocumented, not absent.*