APIs · head to head
Ably vs Swan
Ably
APIs
Realtime data delivery platform for pub/sub messaging at scale
- From
- Free
- Rated
- -
Swan
APIs
European banking-as-a-service platform for embedding accounts, cards and payments into other products
- From
- On request
- Rated
- -
The short version
- Only Ably has a free tier, so it costs nothing to try first.
- Each has a real cost: Ably standard and Pro plans layer usage-based charges for messages, connection minutes, and data transfer on top of the base subscription, adding cost complexity.; Swan its regulatory base and strongest local account coverage are French and European, so companies needing US, UK-post-Brexit-specific, or broader global banking-as-a-service need an additional provider.
- They diverge on capability: Ably covers Pub/sub messaging, Swan covers Embedded business accounts.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Ably and Swan actually diverge.
Identical on both: 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 Ably
- Pub/sub messaging
- Presence
- Message persistence
- Multi-protocol support
- Encryption
- Datadog integration
Only in Swan
- Embedded business accounts
- Card issuing
- SEPA payments
- Local account localisation
- ACPR regulation
- Usage-based pricing
What people use each for
The jobs each tool is most often brought in to do.
Ably
- Building realtime chat or collaborative appsnot Swan
- Delivering live data feeds like stock prices or sports scoresnot Swan
- Broadcasting notifications to many concurrent clientsnot Swan
- Running mission-critical realtime infrastructure with high uptime SLAsnot Swan
Swan
- A vertical SaaS platform wanting to embed business bank accounts under its own brandnot Ably
- A marketplace wanting to issue cards to sellers or partners without becoming a licensed banknot Ably
- A company wanting SEPA payment initiation embedded directly into its own productnot Ably
- A European fintech wanting to avoid a six-figure setup fee and long lock-in typical of legacy banking-as-a-service dealsnot Ably
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Ably
- Standard and Pro plans layer usage-based charges for messages, connection minutes, and data transfer on top of the base subscription, adding cost complexity.
- The jump from Standard ($29/month) to Pro ($399/month) is steep for teams needing more than 10k connections but not full Pro capacity.
- 24/7 mission-critical support and 99.999% uptime SLAs are reserved for the custom-priced Enterprise tier.
Swan
- Its regulatory base and strongest local account coverage are French and European, so companies needing US, UK-post-Brexit-specific, or broader global banking-as-a-service need an additional provider.
- Pricing is described only philosophically (usage-based, no big setup fee) rather than published as an actual rate card, so a company still needs a sales conversation to get real numbers.
- Embedding banking features into a product is a substantial compliance and design undertaking regardless of the vendor, and Swan handling the licence does not remove a platform's own KYC, AML and customer support obligations for the accounts it offers.
- As a comparatively young, single-country-licensed e-money institution, its balance sheet and regulatory standing carry more concentration risk than a banking-as-a-service offering backed by an established, multi-jurisdiction bank.
- Local account depth is explicitly limited to France, Germany and Spain, so a platform needing native local accounts in other European countries may find coverage thinner than expected.
Pricing, plan by plan
Ably
Free- FreeFree
- 200 concurrent connections
- 500 messages/second
- 6M messages/month
- Standard$29/month
- 10k concurrent channels
- 10k concurrent connections
- 2.5k messages/second
- Pro$399/month
- 50k concurrent channels
- 50k concurrent connections
- 10k messages/second
Swan
On request- Swan$undefined/month
- Usage-based pricing, no published rate card
- No long-term contract or large setup fee required
- Custom quote based on current, not forecast, usage
Which should you pick?
Choose Ably if
- You need pub/sub messaging.
- You want to start without paying.
- You work on web, ios, android, api.
- You also want presence.
Choose Swan if
- You need embedded business accounts.
- You work on Web, API.
- You also want card issuing.
Questions people ask
- Is Ably or Swan better?
- Neither clearly leads. Ably starts at Free and Swan at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Ably or Swan?
- Ably has a free tier; the other does not. Paid plans start at Free for Ably and On request for Swan.
- Does Ably or Swan run on more platforms?
- Ably runs on web, ios, android, api. Swan runs on Web, API.
- Can I use Ably for free?
- Yes. Ably has a free tier, so you can try it without paying. Swan starts at On request.
- What is Ably best used for?
- Ably is most often used for building realtime chat or collaborative apps, delivering live data feeds like stock prices or sports scores, broadcasting notifications to many concurrent clients, running mission-critical realtime infrastructure with high uptime slas. Of those, building realtime chat or collaborative apps and delivering live data feeds like stock prices or sports scores are not what Swan is typically brought in for.
- What can Ably do that Swan cannot?
- Ably covers Pub/sub messaging, Presence, Message persistence, Multi-protocol support. Swan covers Embedded business accounts, Card issuing, SEPA payments, Local account localisation.
Answered from the vendors’ own pages
Ably: What does Ably cost?
Ably offers a free plan with 200 concurrent connections, a Standard plan at $29/month plus usage, a Pro plan at $399/month plus usage, and custom Enterprise pricing with unlimited channels and connections.
SourceSwan: Which countries does Swan offer local accounts in?
France, Germany and Spain specifically, alongside broader SEPA payment coverage.
Ably: Is there a free plan, and what are its limits?
Yes, the free plan includes 200 concurrent connections, 500 messages per second, and 6 million messages per month with community and best-effort email support.
SourceSwan: Is pricing published?
No, Swan describes a usage-based, no-large-setup-fee philosophy but requires a quote for actual numbers.
Ably: How is usage metered?
Beyond plan limits, Ably charges usage-based rates of $2.50 per million messages, $1.00 per million connection minutes, $1.00 per million channel minutes, and $0.25 per GiB of data transfer, with volume discounts available.
SourceSwan: Who regulates Swan?
France's ACPR (Autorite de Controle Prudentiel et de Resolution), as a licensed e-money institution.
Related pages
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