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Automation & Integration · head to head

Microsoft Power Automate vs Swagger/OpenAPI

Microsoft Power Automate logo

Microsoft Power Automate

Automation & Integration

Automate tasks across cloud and on-premises apps

From
Free
Rated
-
Full reviewWebsite
S

Swagger/OpenAPI

API Management

API specification and documentation framework using OpenAPI standard

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Microsoft Power Automate free plan limited to 750 flow runs/month and standard connectors only; premium connectors require paid plans; Swagger/OpenAPI the OpenAPI Specification itself is licensed under Apache License 2.0 and free to use; SwaggerHub is a separate paid tool built on top of it
  • They diverge on capability: Microsoft Power Automate covers Automated flows, Swagger/OpenAPI covers OpenAPI Specification.

Where they differ

Only the attributes on which Microsoft Power Automate and Swagger/OpenAPI actually diverge.

Attributes where Microsoft Power Automate and Swagger/OpenAPI differ
AttributeMicrosoft Power AutomateSwagger/OpenAPI
Pricing modelUnknownfreemium
PlatformsWeb, Cloud, DesktopWeb, CLI, Desktop
CategoryAutomation & IntegrationAPI Management
Founded20162001

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Microsoft Power Automate

  • Automated flows
  • Instant flows
  • Scheduled flows
  • Desktop automation
  • Process mining
  • Business process flows
  • Approval workflows
  • 500+ connectors

Only in Swagger/OpenAPI

  • OpenAPI Specification
  • Interactive Documentation
  • Code Generation
  • GitHub
  • GitLab
  • Jenkins
  • IDE plugins
  • Web support

What people use each for

The jobs each tool is most often brought in to do.

Microsoft Power Automate

  • Workflow Automationnot Swagger/OpenAPI
  • Data Integrationnot Swagger/OpenAPI
  • Process Automationnot Swagger/OpenAPI
  • App Integrationnot Swagger/OpenAPI
  • API Connectivitynot Swagger/OpenAPI

Swagger/OpenAPI

  • API Developmentnot Microsoft Power Automate
  • API Gatewaynot Microsoft Power Automate
  • API Testingnot Microsoft Power Automate
  • API Documentationnot Microsoft Power Automate
  • Microservicesnot Microsoft Power Automate

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Microsoft Power Automate

  • Free plan limited to 750 flow runs/month and standard connectors only; premium connectors require paid plans
  • Not suitable for long-running workflows; can fail unexpectedly without warning
  • Limited to simple linear logic; fails with complex workflows involving multiple stakeholders
  • Tasks cannot automate at scale when requiring more than approximately 60 users

Swagger/OpenAPI

  • The OpenAPI Specification itself is licensed under Apache License 2.0 and free to use; SwaggerHub is a separate paid tool built on top of it

Pricing, plan by plan

Microsoft Power Automate

Free
  • FreeFree
    • 750 flow runs/month
    • Standard connectors only
    • Basic cloud flows
  • Premium$15/user/month
    • Cloud flows (DPA)
    • Attended RPA
    • 250 MB Dataverse database
  • Process$150/bot/month
    • Unattended automation
    • Cloud and desktop flows
    • 50 MB Dataverse database
  • Hosted Process$215/bot/month
    • Microsoft-managed virtual machine
    • Unattended automation
    • Same Dataverse entitlements as Process plan

Swagger/OpenAPI

Free
  • Open SourceFree
    • OpenAPI specification
    • Community tools
  • SwaggerHub FreeFree
    • Cloud editor
    • API mocking
    • API testing
  • SwaggerHub Pro$75/monthly
    • Team collaboration
    • Advanced mocking
    • Analytics

Which should you pick?

Choose Microsoft Power Automate if

  • You need automated flows.
  • You want to start without paying.
  • You work on Web, Cloud, Desktop.
  • You also want instant flows.
Microsoft Power Automate review

Choose Swagger/OpenAPI if

  • You need openapi specification.
  • You want to start without paying.
  • You work on Web, CLI, Desktop.
  • You also want interactive documentation.
Swagger/OpenAPI review

Questions people ask

Is Microsoft Power Automate or Swagger/OpenAPI better?
Neither clearly leads. Microsoft Power Automate starts at Free and Swagger/OpenAPI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Microsoft Power Automate or Swagger/OpenAPI?
Microsoft Power Automate starts at Free and Swagger/OpenAPI at Free.
Does Microsoft Power Automate or Swagger/OpenAPI run on more platforms?
Microsoft Power Automate runs on Web, Cloud, Desktop. Swagger/OpenAPI runs on Web, CLI, Desktop.
Can I use Microsoft Power Automate for free?
Both have a free tier, so you can try either at no cost before committing.
What is Microsoft Power Automate best used for?
Microsoft Power Automate is most often used for workflow automation, data integration, process automation, app integration. Of those, workflow automation and data integration are not what Swagger/OpenAPI is typically brought in for.
What can Microsoft Power Automate do that Swagger/OpenAPI cannot?
Microsoft Power Automate covers Automated flows, Instant flows, Scheduled flows, Desktop automation. Swagger/OpenAPI covers OpenAPI Specification, Interactive Documentation, Code Generation, GitHub.

Answered from the vendors’ own pages

Microsoft Power Automate: Is Power Automate included with Microsoft 365?

Yes. If you have an eligible Microsoft 365 subscription, you can use Power Automate at no extra cost for flows relying only on standard connectors (SharePoint, Outlook, Teams). Premium connectors (Salesforce, SAP, Oracle) require paid plans.

Source
Microsoft Power Automate: How many flow runs are allowed on the free plan?

Power Automate's free tier (included with Microsoft 365) is limited to 750 flow runs per month and standard connectors only. Out of 900+ total connectors, the free plan only includes Microsoft ecosystem apps and limited third-party apps.

Source
Microsoft Power Automate: What's the difference between Premium and Process plans?

Premium ($15/user/month) provides attended automation with cloud flows and standard RPA. Process plan ($150/bot/month) enables unattended automation where bots run without human intervention on virtual machines for high-volume, repetitive tasks.

Source
Microsoft Power Automate: Does Power Automate support long-running workflows?

No. Power Automate is not suitable for long-lasting workflows because they can run without warning and fail unexpectedly. The platform is built for linear, branching logic (if-then) rather than complex, multi-step business processes involving multiple stakeholders.

Source
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