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APIs · head to head

Ably vs Episode Six

Ably logo

Ably

APIs

Realtime data delivery platform for pub/sub messaging at scale

From
Free
Rated
-
Full reviewWebsite
Episode Six logo

Episode Six

APIs

Payment processing and ledger platform deployable on premise or in your own cloud

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.; Episode Six deployment on premise or in a private tenancy means the institution carries infrastructure, upgrade and PCI scope work that a hosted processor would absorb.
  • They diverge on capability: Ably covers Pub/sub messaging, Episode Six covers Tritium API platform.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Ably and Episode Six actually diverge.

Attributes where Ably and Episode Six differ
AttributeAblyEpisode Six
Starting priceFreeOn request
Pricing modelfreemiumquote
Free tierYesNo
Platformsweb, ios, android, apiWeb, API, On-premise

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 Episode Six

  • Tritium API platform
  • Flexible deployment
  • Multi product issuing
  • Digital wallets
  • Multi currency ledger
  • Network connectivity
  • Configurable product engine
  • Institutional controls

What people use each for

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

Ably

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

Episode Six

  • A bank in a jurisdiction with data residency rules that forbid processing customer data in a shared multi tenant cloudnot Ably
  • A large institution replacing a legacy card processor without moving off its own infrastructurenot Ably
  • A telco or airline launching a branded wallet and card product at national scalenot Ably
  • A bank running prepaid, debit and credit products that wants them on one ledger rather than three processorsnot 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.

Episode Six

  • Deployment on premise or in a private tenancy means the institution carries infrastructure, upgrade and PCI scope work that a hosted processor would absorb.
  • Implementation runs to quarters and involves core banking, network certification and fraud system integration, so time to first card is far longer than with a self serve issuer processor.
  • Pricing is entirely bespoke and weighted to large programmes, which prices out fintechs and small issuers who would be better served by a hosted platform.
  • Being smaller than the incumbent processors, its network certifications and operational presence vary by region, so a global rollout can find gaps in specific markets.
  • The flexibility of six hundred APIs and a configurable product engine shifts design responsibility onto the buyer, and institutions without strong internal payments architects end up dependent on professional services.

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

Episode Six

On request
  • Tritium platform$undefined/year
    • Licence and implementation quoted per institution
    • Deployment model affects cost materially: on premise, private cloud or hosted
    • Processing fees typically per transaction or per active card

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 Episode Six if

  • You need tritium api platform.
  • You work on Web, API, On-premise.
  • You also want flexible deployment.
Episode Six review

Questions people ask

Is Ably or Episode Six better?
Neither clearly leads. Ably starts at Free and Episode Six at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Ably or Episode Six?
Ably has a free tier; the other does not. Paid plans start at Free for Ably and On request for Episode Six.
Does Ably or Episode Six run on more platforms?
Ably runs on web, ios, android, api. Episode Six runs on Web, API, On-premise.
Can I use Ably for free?
Yes. Ably has a free tier, so you can try it without paying. Episode Six 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 Episode Six is typically brought in for.
What can Ably do that Episode Six cannot?
Ably covers Pub/sub messaging, Presence, Message persistence, Multi-protocol support. Episode Six covers Tritium API platform, Flexible deployment, Multi product issuing, Digital wallets.

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
Episode Six: Can Episode Six run inside our own data centre?

Yes. On premise and private cloud deployment is the main reason banks choose it over hosted only processors.

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
Episode Six: Is it suitable for a startup issuing its first cards?

Not really. The licence, implementation timeline and cost are aimed at banks and large institutions.

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
Episode Six: Do we still need a card licence or sponsor?

Yes. Episode Six is a processor. Network membership, licensing or a sponsor arrangement remains your responsibility.

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