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APIs · head to head

Ably vs Salt Edge

Ably logo

Ably

APIs

Realtime data delivery platform for pub/sub messaging at scale

From
Free
Rated
-
Full reviewWebsite
Salt Edge logo

Salt Edge

APIs

Independent open banking aggregator covering Europe by PSD2 API and other markets by direct connection

From
On request
Rated
-
Full reviewWebsite

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.; Salt Edge coverage outside regulated open banking markets is not all direct bank API, and connections that are not regulated interfaces break when a bank changes its systems, so a headline country count overstates the reliability you will actually experience.
  • They diverge on capability: Ably covers Pub/sub messaging, Salt Edge covers Account information.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Ably and Salt Edge actually diverge.

Attributes where Ably and Salt Edge differ
AttributeAblySalt Edge
Starting priceFreeOn request
Pricing modelfreemiumquote
Free tierYesNo
Platformsweb, ios, android, apiWeb, API

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 Salt Edge

  • Account information
  • Payment initiation
  • Wide country coverage
  • Open Banking Gateway
  • Categorisation and enrichment
  • Consent management
  • Partner and white label
  • Sandbox

What people use each for

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

Ably

  • Building realtime chat or collaborative appsnot Salt Edge
  • Delivering live data feeds like stock prices or sports scoresnot Salt Edge
  • Broadcasting notifications to many concurrent clientsnot Salt Edge
  • Running mission-critical realtime infrastructure with high uptime SLAsnot Salt Edge

Salt Edge

  • A lender operating across several European and non-EU markets that needs one aggregation contract rather than a different provider per countrynot Ably
  • A fintech that wants an aggregator not owned by a card network because its use case competes with card productsnot Ably
  • An accounting or treasury product that needs bank feeds in markets the large aggregators do not servenot Ably
  • A bank that must publish PSD2-compliant APIs and would rather buy the compliance layer than build itnot 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.

Salt Edge

  • Coverage outside regulated open banking markets is not all direct bank API, and connections that are not regulated interfaces break when a bank changes its systems, so a headline country count overstates the reliability you will actually experience.
  • Pricing is not published and is usage-based, so two providers cannot be compared without running both sales processes, and cost grows with the connected user base rather than with revenue.
  • Support and engineering are distributed across Eastern Europe and Canada, and buyers in other time zones report slower turnaround on connection-specific breakages than they get from a domestic provider.
  • PSD2 consent rules require customers to reauthenticate periodically, and Salt Edge cannot change that, so any product depending on continuous data must design for consent expiry and the drop-off it causes.
  • United States coverage is weaker than Plaid or Mastercard Open Banking, so a company with meaningful US volume ends up running two aggregators and normalising between them.

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

Salt Edge

On request
  • Salt Edge Open Banking API$undefined/year
    • Account information and payment initiation
    • Coverage across 50 plus countries
    • Consent management and enrichment

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.
Ably review

Choose Salt Edge if

  • You need account information.
  • You work on Web, API.
  • You also want payment initiation.
Salt Edge review

Questions people ask

Is Ably or Salt Edge better?
Neither clearly leads. Ably starts at Free and Salt Edge at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Ably or Salt Edge?
Ably has a free tier; the other does not. Paid plans start at Free for Ably and On request for Salt Edge.
Does Ably or Salt Edge run on more platforms?
Ably runs on web, ios, android, api. Salt Edge runs on Web, API.
Can I use Ably for free?
Yes. Ably has a free tier, so you can try it without paying. Salt Edge 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 Salt Edge is typically brought in for.
What can Ably do that Salt Edge cannot?
Ably covers Pub/sub messaging, Presence, Message persistence, Multi-protocol support. Salt Edge covers Account information, Payment initiation, Wide country coverage, Open Banking Gateway.

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.

Source
Salt Edge: Who owns Salt Edge?

It is independently owned, unlike Tink (Visa), Finicity (Mastercard) or Yodlee (Envestnet), which matters if your use case competes with the owner.

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.

Source
Salt Edge: Is all coverage direct bank API?

No. Inside PSD2 markets connections use regulated APIs; elsewhere coverage relies on direct connections whose reliability depends on the bank not changing its systems. Ask for a per-institution answer.

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.

Source
Salt Edge: Does it do payments as well as data?

Yes, payment initiation is supported in European markets where PSD2 applies.

Salt Edge: What does it cost?

Not published. Pricing is usage-based and quoted, though the sandbox is free.

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