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APIs · head to head

Convoy vs Swagger/OpenAPI

Convoy logo

Convoy

APIs

Open source webhooks gateway you self-host, handling both sending and receiving

From
Free
Rated
-
Full reviewWebsite
Swagger/OpenAPI logo

Swagger/OpenAPI

APIs

API specification and documentation framework using OpenAPI standard

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Convoy the default deployment is self-hosted, so you operate Convoy plus Postgres and Redis and carry the on-call burden for the system that delivers your customers' events.; 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: Convoy covers Inbound and outbound, Swagger/OpenAPI covers OpenAPI Specification.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Convoy and Swagger/OpenAPI actually diverge.

Attributes where Convoy and Swagger/OpenAPI differ
AttributeConvoySwagger/OpenAPI
Pricing modelPer month, flat rate regardless of volumefreemium
PlatformsLinux, Docker, Kubernetes, CloudWeb, CLI, Desktop
FoundedUnknown2001

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

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 Convoy

  • Inbound and outbound
  • Broker-driven ingestion
  • Payload transformation
  • Portal links
  • Circuit breaking
  • Retry policies
  • OpenTelemetry export
  • Role-based access control

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.

Convoy

  • A fintech that cannot route customer webhook traffic through a third-party SaaS for compliance reasonsnot Swagger/OpenAPI
  • A high-volume platform for which per-message webhook pricing costs more than the flat premium licencenot Swagger/OpenAPI
  • A team that also receives webhooks from many providers and wants ingestion, verification and deduplication in the same gatewaynot Swagger/OpenAPI
  • An engineering group that wants webhook delivery driven directly from an existing Kafka or SQS topicnot Swagger/OpenAPI

Swagger/OpenAPI

  • API Developmentnot Convoy
  • API Gatewaynot Convoy
  • API Testingnot Convoy
  • API Documentationnot Convoy
  • Microservicesnot Convoy

Where each one falls short

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

Convoy

  • The default deployment is self-hosted, so you operate Convoy plus Postgres and Redis and carry the on-call burden for the system that delivers your customers' events.
  • Frain Technologies is a small startup, and putting customer-facing delivery infrastructure on it means accepting real vendor continuity risk on a component that is hard to swap out quickly.
  • The premium tier at a flat 999 US dollars a month is poor value below substantial volume, while the community edition omits the portal, transformations and RBAC that most production deployments end up wanting.
  • The hosted cloud trial is capped at one project and 100 events a day, which is too small to properly evaluate the service before committing.
  • Documentation and the third-party ecosystem are thinner than the established webhook services, so unusual configurations often mean reading the Go source.

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

Convoy

Free
  • CommunityFree
    • Self-hosted open source gateway
    • Inbound and outbound webhooks
    • Automatic retries and message broker support
  • Premium$999/month
    • Flat rate irrespective of message volume
    • Portal links and payload transformation
    • RBAC, circuit breaking and white labelling
  • Enterprise$undefined/year
    • SAML SSO
    • Dedicated support with SLA
    • On-premises deployment assistance
  • Cloud$undefined/month
    • Hosted by Convoy
    • 14 day trial limited to one project and 100 events a day
    • Usage-based tiers above the trial

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 Convoy if

  • You need inbound and outbound.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Cloud.
  • You also want broker-driven ingestion.
Convoy 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 Convoy or Swagger/OpenAPI better?
Neither clearly leads. Convoy 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, Convoy or Swagger/OpenAPI?
Convoy starts at Free and Swagger/OpenAPI at Free.
Does Convoy or Swagger/OpenAPI run on more platforms?
Convoy runs on Linux, Docker, Kubernetes, Cloud. Swagger/OpenAPI runs on Web, CLI, Desktop.
Can I use Convoy for free?
Both have a free tier, so you can try either at no cost before committing.
What is Convoy best used for?
Convoy is most often used for a fintech that cannot route customer webhook traffic through a third-party saas for compliance reasons, a high-volume platform for which per-message webhook pricing costs more than the flat premium licence, a team that also receives webhooks from many providers and wants ingestion, verification and deduplication in the same gateway, an engineering group that wants webhook delivery driven directly from an existing kafka or sqs topic. Of those, a fintech that cannot route customer webhook traffic through a third-party saas for compliance reasons and a high-volume platform for which per-message webhook pricing costs more than the flat premium licence are not what Swagger/OpenAPI is typically brought in for.
What can Convoy do that Swagger/OpenAPI cannot?
Convoy covers Inbound and outbound, Broker-driven ingestion, Payload transformation, Portal links. Swagger/OpenAPI covers OpenAPI Specification, Interactive Documentation, Code Generation, GitHub.

Answered from the vendors’ own pages

Convoy: Is Convoy really open source?

Yes, the community edition is open source and self-hostable, covering both inbound and outbound webhooks with retries.

Swagger/OpenAPI: Is Swagger UI free to use?

Swagger UI is an open source tool with source code publicly available on GitHub at no cost. It is one of thousands of free open source projects in the Swagger ecosystem.

Source
Convoy: What does premium cost?

A flat 999 US dollars a month, self-hosted, regardless of message volume.

Swagger/OpenAPI: What commercial Swagger products are available beyond the open source tools?

Swagger offers Swagger for Teams for streamlined API workflow with interactive editors and hosted documentation, and Swagger Enterprise for organizations needing secure on-premise or cloud-based environments. Specific pricing requires contacting sales.

Source
Convoy: Does it receive webhooks as well as send them?

Yes, inbound ingestion with verification and deduplication is a first-class feature, unlike most webhook services.

Swagger/OpenAPI: Are there commercial versions that build on the open source Swagger tools?

Yes, commercial Swagger products integrate the core functionality of Swagger open source tools (Editor, UI, and Codegen) with advanced capabilities for team collaboration, standards enforcement, and enterprise features.

Source
Convoy: Do I have to self-host?

No, there is a hosted cloud, but the trial is capped at 100 events a day and self-hosting is the primary model.

Swagger/OpenAPI: Is there a trial available for Swagger commercial products?

A Start Trial call-to-action is available on the Swagger website, but specific trial duration and terms are not disclosed on the product pages.

Source
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