API Management · head to head
PubNub vs Swagger/OpenAPI

PubNub
API Management
Realtime communication platform for chat, IoT, and live data apps
- From
- Free
- Rated
- -
Swagger/OpenAPI
API Management
API specification and documentation framework using OpenAPI standard
- From
- Free
- Rated
- -
The short version
- Each has a real cost: PubNub free plan storage history is limited to 7 days, which is short for apps needing longer message retention.; 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: PubNub covers Pub/sub messaging, Swagger/OpenAPI covers OpenAPI Specification.
Where they differ
Only the attributes on which PubNub and Swagger/OpenAPI actually diverge.
| Attribute | PubNub | Swagger/OpenAPI |
|---|---|---|
| Platforms | web, ios, android, api | Web, CLI, Desktop |
| Founded | Unknown | 2001 |
Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), user rating (Not yet rated), category (API Management).
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 PubNub
- Pub/sub messaging
- Presence tracking
- Message persistence
- Serverless Functions
- File sharing
- Encryption and access controls
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.
PubNub
- Building realtime chat applicationsnot Swagger/OpenAPI
- Streaming live IoT sensor datanot Swagger/OpenAPI
- Adding presence indicators to collaborative appsnot Swagger/OpenAPI
- Running edge logic with serverless Functions on realtime eventsnot Swagger/OpenAPI
Swagger/OpenAPI
- API Developmentnot PubNub
- API Gatewaynot PubNub
- API Testingnot PubNub
- API Documentationnot PubNub
- Microservicesnot PubNub
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
PubNub
- Free plan storage history is limited to 7 days, which is short for apps needing longer message retention.
- MAU-based pricing means costs scale directly with user growth, which can be less predictable than flat message-based pricing.
- Pro-tier custom pricing above 50,000 MAU requires contacting sales rather than self-serve checkout.
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
PubNub
Free- FreeFree
- Up to 200 MAU or 1M transactions
- 1GB data storage (7 days)
- 5 test Serverless Functions
- Starter$98/month
- 1,000 MAU included
- User management
- Insights
- Pro$undefined/month
- Custom MAU packages
- Volume discounts
- Enterprise-scale configurations
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 PubNub if
- You need pub/sub messaging.
- You want to start without paying.
- You work on web, ios, android, api.
- You also want presence tracking.
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.
Questions people ask
- Is PubNub or Swagger/OpenAPI better?
- Neither clearly leads. PubNub 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, PubNub or Swagger/OpenAPI?
- PubNub starts at Free and Swagger/OpenAPI at Free.
- Does PubNub or Swagger/OpenAPI run on more platforms?
- PubNub runs on web, ios, android, api. Swagger/OpenAPI runs on Web, CLI, Desktop.
- Can I use PubNub for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is PubNub best used for?
- PubNub is most often used for building realtime chat applications, streaming live iot sensor data, adding presence indicators to collaborative apps, running edge logic with serverless functions on realtime events. Of those, building realtime chat applications and streaming live iot sensor data are not what Swagger/OpenAPI is typically brought in for.
- What can PubNub do that Swagger/OpenAPI cannot?
- PubNub covers Pub/sub messaging, Presence tracking, Message persistence, Serverless Functions. Swagger/OpenAPI covers OpenAPI Specification, Interactive Documentation, Code Generation, GitHub.
Answered from the vendors’ own pages
PubNub: What does PubNub cost?
PubNub offers a free plan for up to 200 MAU or 1 million transactions, a Starter plan at $98/month for 1,000 MAU, and custom Pro pricing for larger volumes, e.g. around $550/month for 10,000 MAU.
SourcePubNub: Is there a free plan, and what are its limits?
Yes, the free plan supports up to 200 monthly active users or 1 million transactions, includes 1GB of data storage retained for 7 days, and requires no credit card.
SourcePubNub: How is usage metered?
PubNub bills primarily by Monthly Active Users, defined as a unique user who connects at least once in a billing cycle; messages are bundled into MAU pricing with no separate per-message fees, and overage is billed proportionally.
SourceRelated pages
More on Swagger/OpenAPI
Other head to heads
- PubNub vs Appwrite
- PubNub vs Hasura
- PubNub vs PocketBase
- PubNub vs Sanity
- PubNub vs Apigee
- PubNub vs Ably
- PubNub vs Pusher
- PubNub vs Kong Gateway
- PubNub vs Treblle
- PubNub vs Apollo GraphQL
- PubNub vs Bruno
- PubNub vs KeystoneJS
- PubNub vs Moesif
- PubNub vs Parse Server
- PubNub vs Stainless
- PubNub vs Stoplight
- PubNub vs Strapi
- Swagger/OpenAPI vs Appwrite
- Swagger/OpenAPI vs Hasura
- Swagger/OpenAPI vs PocketBase
- Swagger/OpenAPI vs Sanity
- Swagger/OpenAPI vs Apigee
- Swagger/OpenAPI vs Ably
- Swagger/OpenAPI vs Pusher
- Swagger/OpenAPI vs Kong Gateway
- Swagger/OpenAPI vs Treblle
- Swagger/OpenAPI vs Apollo GraphQL
- Swagger/OpenAPI vs Bruno
- Swagger/OpenAPI vs KeystoneJS
- Swagger/OpenAPI vs Moesif
- Swagger/OpenAPI vs Parse Server
- Swagger/OpenAPI vs Stainless
- Swagger/OpenAPI vs Stoplight
- Swagger/OpenAPI vs Strapi
