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APIs · head to head

Asyncapi vs Thredd

Asyncapi logo

Asyncapi

APIs

Specification and tools for defining asynchronous APIs

From
Free
Rated
-
Full reviewWebsite
Thredd logo

Thredd

APIs

Issuer processing platform for fintechs and digital banks, formerly Global Processing Services

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Asyncapi has a free tier, so it costs nothing to try first.
  • Each has a real cost: Asyncapi complex to implement and debug asynchronous operations due to their non-linear and concurrent nature; Thredd pricing is entirely unpublished, so cost comparison against competing processors requires a sales process.
  • They diverge on capability: Asyncapi covers API Specification, Thredd covers Issuer processing.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Asyncapi and Thredd actually diverge.

Attributes where Asyncapi and Thredd differ
AttributeAsyncapiThredd
Starting priceFreeOn request
Pricing modelopen-sourcequote
Free tierYesNo
PlatformsWeb, CLI, IDE ExtensionsWeb, API
Founded2019Unknown

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 Asyncapi

  • API Specification
  • Code generation
  • Documentation
  • Multiple messaging protocols
  • Code generators
  • Specification support
  • Tools support
  • CLI support

Only in Thredd

  • Issuer processing
  • Multi-country reach
  • Scheme certification
  • Programme support across verticals
  • High platform availability
  • Global office footprint

What people use each for

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

Asyncapi

  • API Developmentnot Thredd
  • API Gatewaynot Thredd
  • API Testingnot Thredd
  • API Documentationnot Thredd
  • Microservicesnot Thredd

Thredd

  • A digital bank or fintech needing issuer processing across many countries under one contractnot Asyncapi
  • A BNPL, lending or crypto product needing certified card processing behind its own brandnot Asyncapi
  • A company that finds outdated Global Processing Services (GPS) material and needs to confirm it is now Threddnot Asyncapi
  • An embedded finance platform wanting a processor already integrated with core banking systems such as Mambunot Asyncapi

Where each one falls short

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

Asyncapi

  • Complex to implement and debug asynchronous operations due to their non-linear and concurrent nature
  • Keeping AsyncAPI documents up to date is challenging as systems evolve
  • Tracing and debugging asynchronous operations is more difficult than synchronous request-response patterns

Thredd

  • Pricing is entirely unpublished, so cost comparison against competing processors requires a sales process.
  • The 2023 rebrand from GPS to Thredd means research under either name alone can miss relevant material, and partner or press references before 2023 will still say GPS.
  • Issuer processing does not include the banking licence itself, so a fintech still needs a separate BIN sponsor or bank partner, adding a second relationship to manage.
  • As shared infrastructure behind many fintech brands, an outage or processing delay at Thredd becomes a simultaneous incident for every programme running on it, with limited visibility for any single customer into root cause.
  • Its verticals span crypto, BNPL and remittance broadly, so depth of specialist support in any one vertical may be thinner than a processor focused narrowly on that niche.

Pricing, plan by plan

Asyncapi

Free
  • Open SourceFree
    • AsyncAPI specification
    • Tools
    • Community support

Thredd

On request
  • Thredd$undefined/year
    • Volume and programme-based pricing, not published
    • Custom quote required via sales

Which should you pick?

Choose Asyncapi if

  • You need api specification.
  • You want to start without paying.
  • You work on Web, CLI, IDE Extensions.
  • You also want code generation.
Asyncapi review

Choose Thredd if

  • You need issuer processing.
  • You work on Web, API.
  • You also want multi-country reach.
Thredd review

Questions people ask

Is Asyncapi or Thredd better?
Neither clearly leads. Asyncapi starts at Free and Thredd at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Asyncapi or Thredd?
Asyncapi has a free tier; the other does not. Paid plans start at Free for Asyncapi and On request for Thredd.
Does Asyncapi or Thredd run on more platforms?
Asyncapi runs on Web, CLI, IDE Extensions. Thredd runs on Web, API.
Can I use Asyncapi for free?
Yes. Asyncapi has a free tier, so you can try it without paying. Thredd starts at On request.
What is Asyncapi best used for?
Asyncapi is most often used for api development, api gateway, api testing, api documentation. Of those, api development and api gateway are not what Thredd is typically brought in for.
What can Asyncapi do that Thredd cannot?
Asyncapi covers API Specification, Code generation, Documentation, Multiple messaging protocols. Thredd covers Issuer processing, Multi-country reach, Scheme certification, Programme support across verticals.

Answered from the vendors’ own pages

Asyncapi: What is AsyncAPI used for?

AsyncAPI is an open-source specification for defining and documenting asynchronous APIs, message-driven systems, and event-driven architectures. It serves the same purpose for async APIs as OpenAPI does for REST APIs, providing standardized documentation, code generation, and tooling.

Source
Thredd: Is Thredd the same company as Global Processing Services?

Yes, GPS rebranded as Thredd in 2023; it is the same company and platform.

Asyncapi: Is AsyncAPI free to use?

Yes, AsyncAPI is completely free and open-source. It is hosted by the Linux Foundation and supported by community contributions and sponsorships from companies like Postman, IBM, IQVIA Technology, and Solace.

Source
Thredd: Does it hold the banking licence for programmes it processes?

No, Thredd is the issuer processor; a separate bank or BIN sponsor holds the actual issuing licence.

Asyncapi: What protocols and technologies does AsyncAPI support?

AsyncAPI supports multiple protocols and technologies including Kafka, RabbitMQ, MQTT, Socket.IO, AWS EventBridge, and others. It provides language support for JavaScript/TypeScript, Python, Java, Go, C#/.NET, Kotlin, and PHP.

Source
Thredd: Is pricing published?

No, it requires a sales conversation.

Asyncapi: Does AsyncAPI have IDE support?

Yes, AsyncAPI has IDE extensions available for VSCode and IntelliJ, along with CLI utilities and GitHub Actions integration for developers.

Source
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